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REPRAGE – HOW TO IMPROVE THE STABILITY OF A RASPBERRY PI Provide enough Power. Make sure you are running a 5-volt power supply that provides at least 2.5 Amps. And if you are attaching USB peripherals, like a webcam or something. Go with an external powered USB hub. Although this is something that has improved, the earlier variants didn’t like USB devices drawing much power at all. REPRAGE – HOW TO CONTROL DMX DEVICES WITH THE RASPBERRY PI. The first step is to connect to the DMX controller via that ttyUSB address you noted earlier: // Connect to the DMX controller. dmx, e := dmx.NewDMXConnection ("/dev/ttyUSB2") if e != nil { log.Printf ("ERROR: Unable to connect to DMX512 interface.") return } defer dmx.Close () Now in the following example, I was controlling a fogmachine. The
REPRAGE – HOW TO DEPLOY DOCKER CONTAINERS TO AN ARDUINO Select the ‘Ports’ icon. Select the ‘USB’ tab. Make sure both ‘Enable USB Controller’ and ‘Enable USB 2.0 (EHCI) Controller’ is checked. Press the ‘green plus superimposed on blue USB plug’ button. Select the Arduino device from the list ‘FTDI FT232R USB UART’. Hit OK. Alright. Now VirtualBox is REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Solution: These problems are usually resolved by tweaking the settings in a gcode generator like slic3r. The first setting you want to tweak is temperature, most of the time oozing problems are because your hotend is running a little hot. Try lowering it a couple of degrees and try again. If that doesn’t completely alleviate the problem REPRAGE – WHAT POWER INPUT IS REQUIRED FOR THE RAMPS 1.4 So it is best to run both with 12 volts. This means you need a power supply capable of outputting 12 volts at 16 amps - not every ATX power supply does this! So you need to be careful when purchasing your power supply. It is OK to have more than 16 amps, but not less. If you only had say 8 amps of 12 volt power, your power supply will become REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USING The bluetooth device didn’t need to be discoverable, just switched on. If the tower found the device it push a tracking message back to the central tracking server “02264BBC4E3A just arrived at Tower A.” if a device that was in the cell disappears, then the node would tell the central tracking server “02264BBC4E3A just departed atTower
REPRAGE – NEMA17 STEPPERS, MUCH DIFFERENCE BETWEEN 0.9 AND The Answer: The tradeoff, mechanically, between the two resolutions is typically a small decrease in torque due to the way stepper motors are designed. You can compensate with higher currents or larger motors if needed. You also need to double the speed of your driver to maintain the same machine speed if you go with a finer resolution stepper. REPRAGE – DFPLAYERMINI CHEAT SHEET DFPlayerMini cheat sheet. Recently I had the chance to incorporate the DFPlayer Mini into a project. It’s a super cute MP3 player that is great for Arduino powered projects. The only problem being with the documentation. It is a little spotty and I had to work pretty hard to get around a few issues. So here is a little cheat sheet to help you REPRAGE – NON-BLOCKING CONTROL OF STEPPER MOTORS ON ARDUINO Non-blocking control of stepper motors on Arduino. Stepper motors are ideal for 3D printers, robots, mills and lathes; you can program them to rotate by very precise amounts. Push the right signal (“I will have 36 degrees please”) into the motor driver and it will spin or ‘step’ by the nominated amount. Wait! REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – HOW TO IMPROVE THE STABILITY OF A RASPBERRY PI Provide enough Power. Make sure you are running a 5-volt power supply that provides at least 2.5 Amps. And if you are attaching USB peripherals, like a webcam or something. Go with an external powered USB hub. Although this is something that has improved, the earlier variants didn’t like USB devices drawing much power at all. REPRAGE – HOW TO DEPLOY DOCKER CONTAINERS TO AN ARDUINO Select the ‘Ports’ icon. Select the ‘USB’ tab. Make sure both ‘Enable USB Controller’ and ‘Enable USB 2.0 (EHCI) Controller’ is checked. Press the ‘green plus superimposed on blue USB plug’ button. Select the Arduino device from the list ‘FTDI FT232R USB UART’. Hit OK. Alright. Now VirtualBox is REPRAGE – HOW TO CONTROL DMX DEVICES WITH THE RASPBERRY PI. The first step is to connect to the DMX controller via that ttyUSB address you noted earlier: // Connect to the DMX controller. dmx, e := dmx.NewDMXConnection ("/dev/ttyUSB2") if e != nil { log.Printf ("ERROR: Unable to connect to DMX512 interface.") return } defer dmx.Close () Now in the following example, I was controlling a fogmachine. The
REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Solution: These problems are usually resolved by tweaking the settings in a gcode generator like slic3r. The first setting you want to tweak is temperature, most of the time oozing problems are because your hotend is running a little hot. Try lowering it a couple of degrees and try again. If that doesn’t completely alleviate the problem REPRAGE – WHAT POWER INPUT IS REQUIRED FOR THE RAMPS 1.4 So it is best to run both with 12 volts. This means you need a power supply capable of outputting 12 volts at 16 amps - not every ATX power supply does this! So you need to be careful when purchasing your power supply. It is OK to have more than 16 amps, but not less. If you only had say 8 amps of 12 volt power, your power supply will become REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USING The bluetooth device didn’t need to be discoverable, just switched on. If the tower found the device it push a tracking message back to the central tracking server “02264BBC4E3A just arrived at Tower A.” if a device that was in the cell disappears, then the node would tell the central tracking server “02264BBC4E3A just departed atTower
REPRAGE – NEMA17 STEPPERS, MUCH DIFFERENCE BETWEEN 0.9 AND The Answer: The tradeoff, mechanically, between the two resolutions is typically a small decrease in torque due to the way stepper motors are designed. You can compensate with higher currents or larger motors if needed. You also need to double the speed of your driver to maintain the same machine speed if you go with a finer resolution stepper.REPRAGE – REPRAGE
A short exploration of the plywood laundry basket by Tom Sachs. I find writing helpful and share my articles online so that they can be useful to others. A complete list can be found in the directory, but here are some of the more popular ones: REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – WHAT POWER INPUT IS REQUIRED FOR THE RAMPS 1.4 So it is best to run both with 12 volts. This means you need a power supply capable of outputting 12 volts at 16 amps - not every ATX power supply does this! So you need to be careful when purchasing your power supply. It is OK to have more than 16 amps, but not less. If you only had say 8 amps of 12 volt power, your power supply will become REPRAGE – 3D PRINTER PLA MOISTURE PROBLEMS AND STORAGE Moisture damaged PLA can cause two main problems with 3D printing: 3D Printer damage: Absorbing moisture makes the PLA filament swell. Feeding swollen PLA into a 3D printer can cause your hot end to jam. In some cases, severe jams require hot end replacement. Poor 3D Print quality: The moisture trapped inside the PLA filament can turn tosteam
REPRAGE – SISYPHUS AND LAUNDRY More laundry to fold. That never-ending pile of laundry. What the shit, old classical painters? Where are all the artworks of a beefy, half-naked Sisyphus carrying a laundry basket up a hill? REPRAGE – HOW TO CONFIGURE SLIC3R TO USE LESS PLASTIC. I decided the robot design from the Rise of the Machines workshop was a fairly decent starting point as an ‘average’ model. First I ran it through Slic3r with some fairly default settings and opened the resulting gcode in pronterface.The right hand terminal displayed exactly how much plastic filament the print is going to consume: REPRAGE – HOW BANKSY AUTHENTICATES HIS WORK When street artist Banksy first started selling screen prints online, they became a popular target for forgers looking to make a few bucks duping unsuspecting fans. It quickly got out of hand and must have been infuriating for both Banksy and his followers. Normally this is where galleries begin to flex their authority and declare which prints are authentic and which are fake. REPRAGE – HOW TO EXPORT GCODE FROM AUTODESK FUSION360 FOR Right click on your setup and select post-process. Select ‘GRBL’ from the post processor drop down. Press OK and tell fusion the filename for your gcode file. After Fusion has finished writing the file, you will be presented with an editing window filled with thecompleted g-code.
REPRAGE – HOW TO TELL IF A STEPPER MOTOR HAS 0.9 OR 1.8 Use the tongue depressor again as a ruler and draw a second line. The arc between the two lines is your step size. Grab your protractor and measure! If the angle between the two lines comes out at 1.8 degrees, your stepper is a 1.8 or 200 step motor. If it comes out at REPRAGE – WILL PRINTING DIRECTLY ONTO THE PRINT BED RUIN IT? A friend of mine asked the following on the now defunct Makers StackExchange.. Question. I am about to assemble a Printrbot LC with heated bed and get started with 3D printing. I will be printing using PLA. Should I cover the print bed with glass or Kapton tape before I try printing for the first time or is that only necessary if I have trouble with the print sticking to the bed? REPRAGE – REPRAGEHOW BANKSY AUTHENTICATES HIS WORKHOW MUCH POWER DOES A 3D PRINTER USEDIRECTORYBODEGA A short exploration of the plywood laundry basket by Tom Sachs. I find writing helpful and share my articles online so that they can be useful to others. A complete list can be found in the directory, but here are some of the more popular ones: REPRAGE – DFPLAYERMINI CHEAT SHEET DFPlayerMini cheat sheet. Recently I had the chance to incorporate the DFPlayer Mini into a project. It’s a super cute MP3 player that is great for Arduino powered projects. The only problem being with the documentation. It is a little spotty and I had to work pretty hard to get around a few issues. So here is a little cheat sheet to help you REPRAGE – NON-BLOCKING CONTROL OF STEPPER MOTORS ON ARDUINO Non-blocking control of stepper motors on Arduino. Stepper motors are ideal for 3D printers, robots, mills and lathes; you can program them to rotate by very precise amounts. Push the right signal (“I will have 36 degrees please”) into the motor driver and it will spin or ‘step’ by the nominated amount. Wait! REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – HOW TO DEPLOY DOCKER CONTAINERS TO AN ARDUINO Select the ‘Ports’ icon. Select the ‘USB’ tab. Make sure both ‘Enable USB Controller’ and ‘Enable USB 2.0 (EHCI) Controller’ is checked. Press the ‘green plus superimposed on blue USB plug’ button. Select the Arduino device from the list ‘FTDI FT232R USB UART’. Hit OK. Alright. Now VirtualBox is REPRAGE – HOW TO CONNECT THE RASPBERRY PI TO A BLUETOOTH Plug your bluetooth dongle into your Pi and the following commands will install BlueZ: The peripheral ID of the heart rate monitor is the address we use for connection. To get the peripheral ID of your Polar H7 heart rate monitor: This will return some output like: Use control-c to stop the scan. We are just interested in the line with‘Polar
REPRAGE – 3D PRINTER PLA MOISTURE PROBLEMS AND STORAGE Moisture damaged PLA can cause two main problems with 3D printing: 3D Printer damage: Absorbing moisture makes the PLA filament swell. Feeding swollen PLA into a 3D printer can cause your hot end to jam. In some cases, severe jams require hot end replacement. Poor 3D Print quality: The moisture trapped inside the PLA filament can turn tosteam
REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Solution: These problems are usually resolved by tweaking the settings in a gcode generator like slic3r. The first setting you want to tweak is temperature, most of the time oozing problems are because your hotend is running a little hot. Try lowering it a couple of degrees and try again. If that doesn’t completely alleviate the problem REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USING The bluetooth device didn’t need to be discoverable, just switched on. If the tower found the device it push a tracking message back to the central tracking server “02264BBC4E3A just arrived at Tower A.” if a device that was in the cell disappears, then the node would tell the central tracking server “02264BBC4E3A just departed atTower
REPRAGE – WHY DO MY 3D PRINTS CURL AND LIFT? The best way to level your print bed correctly is to follow these instructions from Triffid Hunter. Take a sheet of paper and place it on top of your build platform. Move the print head to one of the four corners of the build platform and home the z-axis. This should“pinch”
REPRAGE – REPRAGEHOW BANKSY AUTHENTICATES HIS WORKHOW MUCH POWER DOES A 3D PRINTER USEDIRECTORYBODEGA A short exploration of the plywood laundry basket by Tom Sachs. I find writing helpful and share my articles online so that they can be useful to others. A complete list can be found in the directory, but here are some of the more popular ones: REPRAGE – DFPLAYERMINI CHEAT SHEET DFPlayerMini cheat sheet. Recently I had the chance to incorporate the DFPlayer Mini into a project. It’s a super cute MP3 player that is great for Arduino powered projects. The only problem being with the documentation. It is a little spotty and I had to work pretty hard to get around a few issues. So here is a little cheat sheet to help you REPRAGE – NON-BLOCKING CONTROL OF STEPPER MOTORS ON ARDUINO Non-blocking control of stepper motors on Arduino. Stepper motors are ideal for 3D printers, robots, mills and lathes; you can program them to rotate by very precise amounts. Push the right signal (“I will have 36 degrees please”) into the motor driver and it will spin or ‘step’ by the nominated amount. Wait! REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – HOW TO DEPLOY DOCKER CONTAINERS TO AN ARDUINO Select the ‘Ports’ icon. Select the ‘USB’ tab. Make sure both ‘Enable USB Controller’ and ‘Enable USB 2.0 (EHCI) Controller’ is checked. Press the ‘green plus superimposed on blue USB plug’ button. Select the Arduino device from the list ‘FTDI FT232R USB UART’. Hit OK. Alright. Now VirtualBox is REPRAGE – HOW TO CONNECT THE RASPBERRY PI TO A BLUETOOTH Plug your bluetooth dongle into your Pi and the following commands will install BlueZ: The peripheral ID of the heart rate monitor is the address we use for connection. To get the peripheral ID of your Polar H7 heart rate monitor: This will return some output like: Use control-c to stop the scan. We are just interested in the line with‘Polar
REPRAGE – 3D PRINTER PLA MOISTURE PROBLEMS AND STORAGE Moisture damaged PLA can cause two main problems with 3D printing: 3D Printer damage: Absorbing moisture makes the PLA filament swell. Feeding swollen PLA into a 3D printer can cause your hot end to jam. In some cases, severe jams require hot end replacement. Poor 3D Print quality: The moisture trapped inside the PLA filament can turn tosteam
REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Solution: These problems are usually resolved by tweaking the settings in a gcode generator like slic3r. The first setting you want to tweak is temperature, most of the time oozing problems are because your hotend is running a little hot. Try lowering it a couple of degrees and try again. If that doesn’t completely alleviate the problem REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USING The bluetooth device didn’t need to be discoverable, just switched on. If the tower found the device it push a tracking message back to the central tracking server “02264BBC4E3A just arrived at Tower A.” if a device that was in the cell disappears, then the node would tell the central tracking server “02264BBC4E3A just departed atTower
REPRAGE – WHY DO MY 3D PRINTS CURL AND LIFT? The best way to level your print bed correctly is to follow these instructions from Triffid Hunter. Take a sheet of paper and place it on top of your build platform. Move the print head to one of the four corners of the build platform and home the z-axis. This should“pinch”
REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – HOW TO IMPROVE THE STABILITY OF A RASPBERRY PI Provide enough Power. Make sure you are running a 5-volt power supply that provides at least 2.5 Amps. And if you are attaching USB peripherals, like a webcam or something. Go with an external powered USB hub. Although this is something that has improved, the earlier variants didn’t like USB devices drawing much power at all. REPRAGE – QUICK GUIDE TO CALIBRATING THE SCALE OF YOUR 3D Update your configuration.h with the new reading. Repeat this process for each axis, and then upload your firmware. Now go back, and remeasure with the callipers. Performing the same update if necessary. The more accurate, and repeatable you get this first phase, will make the second phase much quicker. The second phase of the calibration REPRAGE – LEGO FALCON 9 LEGO Falcon 9. This is SpaceX’s Falcon 9 rocket in LEGO. The model featured above is based on the first rocket that SpaceX successfully landed (Flight 20, Orbcomm OG2 M2), it has: Deployable hypersonic grid fins. Deployable landing legs. Nine Merlin engines in an REPRAGE – HOW TO TELL IF A STEPPER MOTOR HAS 0.9 OR 1.8 Use the tongue depressor again as a ruler and draw a second line. The arc between the two lines is your step size. Grab your protractor and measure! If the angle between the two lines comes out at 1.8 degrees, your stepper is a 1.8 or 200 step motor. If it comes out at REPRAGE – WHAT POWER INPUT IS REQUIRED FOR THE RAMPS 1.4 So it is best to run both with 12 volts. This means you need a power supply capable of outputting 12 volts at 16 amps - not every ATX power supply does this! So you need to be careful when purchasing your power supply. It is OK to have more than 16 amps, but not less. If you only had say 8 amps of 12 volt power, your power supply will become REPRAGE – WHAT ARE THE BEST SD CARDS TO USE IN A RASPBERRY PI? SD cards have a limited life, and the more you read and write to them, the shorter their lifespan. In a Raspberry Pi this makes things a little tricky, the SD card gets a much tougher workout than it normally would in something like a digital camera. REPRAGE – IS 3D PRINTED PLA FOOD SAFE? They even heated the some samples to 60°C to simulate food serving conditions. The study found that PLA is Generally Recognized As Safe (GRAS) when used in contact with food. Their summary concluded that PLA releases a small amount of lactic acid into foods. Lactic acid is a common food ingredient, that is even found in breast milk. REPRAGE – NEMA17 STEPPERS, MUCH DIFFERENCE BETWEEN 0.9 AND The Answer: The tradeoff, mechanically, between the two resolutions is typically a small decrease in torque due to the way stepper motors are designed. You can compensate with higher currents or larger motors if needed. You also need to double the speed of your driver to maintain the same machine speed if you go with a finer resolution stepper. REPRAGE – WILL PRINTING DIRECTLY ONTO THE PRINT BED RUIN IT? A friend of mine asked the following on the now defunct Makers StackExchange.. Question. I am about to assemble a Printrbot LC with heated bed and get started with 3D printing. I will be printing using PLA. Should I cover the print bed with glass or Kapton tape before I try printing for the first time or is that only necessary if I have trouble with the print sticking to the bed? REPRAGE – REPRAGEHOW BANKSY AUTHENTICATES HIS WORKHOW MUCH POWER DOES A 3D PRINTER USEDIRECTORYBODEGA A short exploration of the plywood laundry basket by Tom Sachs. I find writing helpful and share my articles online so that they can be useful to others. A complete list can be found in the directory, but here are some of the more popular ones: REPRAGE – DFPLAYERMINI CHEAT SHEET DFPlayerMini cheat sheet. Recently I had the chance to incorporate the DFPlayer Mini into a project. It’s a super cute MP3 player that is great for Arduino powered projects. The only problem being with the documentation. It is a little spotty and I had to work pretty hard to get around a few issues. So here is a little cheat sheet to help you REPRAGE – NON-BLOCKING CONTROL OF STEPPER MOTORS ON ARDUINO Non-blocking control of stepper motors on Arduino. Stepper motors are ideal for 3D printers, robots, mills and lathes; you can program them to rotate by very precise amounts. Push the right signal (“I will have 36 degrees please”) into the motor driver and it will spin or ‘step’ by the nominated amount. Wait! REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – HOW TO DEPLOY DOCKER CONTAINERS TO AN ARDUINO Select the ‘Ports’ icon. Select the ‘USB’ tab. Make sure both ‘Enable USB Controller’ and ‘Enable USB 2.0 (EHCI) Controller’ is checked. Press the ‘green plus superimposed on blue USB plug’ button. Select the Arduino device from the list ‘FTDI FT232R USB UART’. Hit OK. Alright. Now VirtualBox is REPRAGE – HOW TO CONNECT THE RASPBERRY PI TO A BLUETOOTH Plug your bluetooth dongle into your Pi and the following commands will install BlueZ: The peripheral ID of the heart rate monitor is the address we use for connection. To get the peripheral ID of your Polar H7 heart rate monitor: This will return some output like: Use control-c to stop the scan. We are just interested in the line with‘Polar
REPRAGE – 3D PRINTER PLA MOISTURE PROBLEMS AND STORAGE Moisture damaged PLA can cause two main problems with 3D printing: 3D Printer damage: Absorbing moisture makes the PLA filament swell. Feeding swollen PLA into a 3D printer can cause your hot end to jam. In some cases, severe jams require hot end replacement. Poor 3D Print quality: The moisture trapped inside the PLA filament can turn tosteam
REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Solution: These problems are usually resolved by tweaking the settings in a gcode generator like slic3r. The first setting you want to tweak is temperature, most of the time oozing problems are because your hotend is running a little hot. Try lowering it a couple of degrees and try again. If that doesn’t completely alleviate the problem REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USING The bluetooth device didn’t need to be discoverable, just switched on. If the tower found the device it push a tracking message back to the central tracking server “02264BBC4E3A just arrived at Tower A.” if a device that was in the cell disappears, then the node would tell the central tracking server “02264BBC4E3A just departed atTower
REPRAGE – WHY DO MY 3D PRINTS CURL AND LIFT? The best way to level your print bed correctly is to follow these instructions from Triffid Hunter. Take a sheet of paper and place it on top of your build platform. Move the print head to one of the four corners of the build platform and home the z-axis. This should“pinch”
REPRAGE – REPRAGEHOW BANKSY AUTHENTICATES HIS WORKHOW MUCH POWER DOES A 3D PRINTER USEDIRECTORYBODEGA A short exploration of the plywood laundry basket by Tom Sachs. I find writing helpful and share my articles online so that they can be useful to others. A complete list can be found in the directory, but here are some of the more popular ones: REPRAGE – DFPLAYERMINI CHEAT SHEET DFPlayerMini cheat sheet. Recently I had the chance to incorporate the DFPlayer Mini into a project. It’s a super cute MP3 player that is great for Arduino powered projects. The only problem being with the documentation. It is a little spotty and I had to work pretty hard to get around a few issues. So here is a little cheat sheet to help you REPRAGE – NON-BLOCKING CONTROL OF STEPPER MOTORS ON ARDUINO Non-blocking control of stepper motors on Arduino. Stepper motors are ideal for 3D printers, robots, mills and lathes; you can program them to rotate by very precise amounts. Push the right signal (“I will have 36 degrees please”) into the motor driver and it will spin or ‘step’ by the nominated amount. Wait! REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – HOW TO DEPLOY DOCKER CONTAINERS TO AN ARDUINO Select the ‘Ports’ icon. Select the ‘USB’ tab. Make sure both ‘Enable USB Controller’ and ‘Enable USB 2.0 (EHCI) Controller’ is checked. Press the ‘green plus superimposed on blue USB plug’ button. Select the Arduino device from the list ‘FTDI FT232R USB UART’. Hit OK. Alright. Now VirtualBox is REPRAGE – HOW TO CONNECT THE RASPBERRY PI TO A BLUETOOTH Plug your bluetooth dongle into your Pi and the following commands will install BlueZ: The peripheral ID of the heart rate monitor is the address we use for connection. To get the peripheral ID of your Polar H7 heart rate monitor: This will return some output like: Use control-c to stop the scan. We are just interested in the line with‘Polar
REPRAGE – 3D PRINTER PLA MOISTURE PROBLEMS AND STORAGE Moisture damaged PLA can cause two main problems with 3D printing: 3D Printer damage: Absorbing moisture makes the PLA filament swell. Feeding swollen PLA into a 3D printer can cause your hot end to jam. In some cases, severe jams require hot end replacement. Poor 3D Print quality: The moisture trapped inside the PLA filament can turn tosteam
REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Solution: These problems are usually resolved by tweaking the settings in a gcode generator like slic3r. The first setting you want to tweak is temperature, most of the time oozing problems are because your hotend is running a little hot. Try lowering it a couple of degrees and try again. If that doesn’t completely alleviate the problem REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USING The bluetooth device didn’t need to be discoverable, just switched on. If the tower found the device it push a tracking message back to the central tracking server “02264BBC4E3A just arrived at Tower A.” if a device that was in the cell disappears, then the node would tell the central tracking server “02264BBC4E3A just departed atTower
REPRAGE – WHY DO MY 3D PRINTS CURL AND LIFT? The best way to level your print bed correctly is to follow these instructions from Triffid Hunter. Take a sheet of paper and place it on top of your build platform. Move the print head to one of the four corners of the build platform and home the z-axis. This should“pinch”
REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro. RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. One thing to keep in mind with wiring your magnetometer is that it hasa
REPRAGE – HOW TO IMPROVE THE STABILITY OF A RASPBERRY PI Provide enough Power. Make sure you are running a 5-volt power supply that provides at least 2.5 Amps. And if you are attaching USB peripherals, like a webcam or something. Go with an external powered USB hub. Although this is something that has improved, the earlier variants didn’t like USB devices drawing much power at all. REPRAGE – QUICK GUIDE TO CALIBRATING THE SCALE OF YOUR 3D Update your configuration.h with the new reading. Repeat this process for each axis, and then upload your firmware. Now go back, and remeasure with the callipers. Performing the same update if necessary. The more accurate, and repeatable you get this first phase, will make the second phase much quicker. The second phase of the calibration REPRAGE – LEGO FALCON 9 LEGO Falcon 9. This is SpaceX’s Falcon 9 rocket in LEGO. The model featured above is based on the first rocket that SpaceX successfully landed (Flight 20, Orbcomm OG2 M2), it has: Deployable hypersonic grid fins. Deployable landing legs. Nine Merlin engines in an REPRAGE – HOW TO TELL IF A STEPPER MOTOR HAS 0.9 OR 1.8 Use the tongue depressor again as a ruler and draw a second line. The arc between the two lines is your step size. Grab your protractor and measure! If the angle between the two lines comes out at 1.8 degrees, your stepper is a 1.8 or 200 step motor. If it comes out at REPRAGE – WHAT POWER INPUT IS REQUIRED FOR THE RAMPS 1.4 So it is best to run both with 12 volts. This means you need a power supply capable of outputting 12 volts at 16 amps - not every ATX power supply does this! So you need to be careful when purchasing your power supply. It is OK to have more than 16 amps, but not less. If you only had say 8 amps of 12 volt power, your power supply will become REPRAGE – WHAT ARE THE BEST SD CARDS TO USE IN A RASPBERRY PI? SD cards have a limited life, and the more you read and write to them, the shorter their lifespan. In a Raspberry Pi this makes things a little tricky, the SD card gets a much tougher workout than it normally would in something like a digital camera. REPRAGE – IS 3D PRINTED PLA FOOD SAFE? They even heated the some samples to 60°C to simulate food serving conditions. The study found that PLA is Generally Recognized As Safe (GRAS) when used in contact with food. Their summary concluded that PLA releases a small amount of lactic acid into foods. Lactic acid is a common food ingredient, that is even found in breast milk. REPRAGE – NEMA17 STEPPERS, MUCH DIFFERENCE BETWEEN 0.9 AND The Answer: The tradeoff, mechanically, between the two resolutions is typically a small decrease in torque due to the way stepper motors are designed. You can compensate with higher currents or larger motors if needed. You also need to double the speed of your driver to maintain the same machine speed if you go with a finer resolution stepper. REPRAGE – WILL PRINTING DIRECTLY ONTO THE PRINT BED RUIN IT? A friend of mine asked the following on the now defunct Makers StackExchange.. Question. I am about to assemble a Printrbot LC with heated bed and get started with 3D printing. I will be printing using PLA. Should I cover the print bed with glass or Kapton tape before I try printing for the first time or is that only necessary if I have trouble with the print sticking to the bed? REPRAGE – REPRAGEHOW BANKSY AUTHENTICATES HIS WORKHOW MUCH POWER DOES A 3D PRINTER USEDIRECTORYBODEGA 3D printing and other software curiosities by Clinton Freeman. I’m Clinton Freeman. I live in Queensland, Australia and I’m a software engineer that builds technology for creative projects: REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro.RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. REPRAGE – DFPLAYERMINI CHEAT SHEET You will also need to copy these files across in order, the DFPlayer seems to use some sort of creation timestamp when the files are index. So don’t copy 0003.mp3 and REPRAGE – HOW TO IMPROVE THE STABILITY OF A RASPBERRY PI Make sure you are running a 5-volt power supply that provides at least 2.5 Amps.. And if you are attaching USB peripherals, like a webcam or something. Go with an external powered USB hub. REPRAGE – NON-BLOCKING CONTROL OF STEPPER MOTORS ON ARDUINO Stepper motors are ideal for 3D printers, robots, mills and lathes; you can program them to rotate by very precise amounts. Push the right signal (“I will have 36 degrees please”) into the motor driver and it will spin or ‘step’ by the nominated amount. REPRAGE – WHAT POWER INPUT IS REQUIRED FOR THE RAMPS 1.4RAMPS 1 4 MANUALRAMPS 1 4 PINOUTRAMPS 1 4 FAN WIRINGRAMPS 1 4 SCHEMATIC PDFRAMPS 1 4 WIRING DIAGRAMAT POWER SUPPLY WIRING DIAGRAM The power requirements and wiring for a RAMPS 1.4 board for a 3Dprinter.
REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Lots of 3D printing problems stem from plastic oozing out of the hotend, as everything warms up and the plastic becomes soft and begins to flow, gravity takes hold REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USINGCAN BLUETOOTH TRACK YOUR PHONE Pretty much bang on a year ago was a pretty hectic time for me. I had lots going on, travelling for work, planning a secret wedding and hacking together something that could track 40 REPRAGE – WILL PRINTING DIRECTLY ONTO THE PRINT BED RUIN IT? A friend of mine asked the following on the now defunct Makers StackExchange.. Question. I am about to assemble a Printrbot LC with heated bed and get started with 3D printing. I will be printing using PLA. Should I cover the print bed with glass or Kapton tape before I try printing for the first time or is that only necessary if I have trouble with the print sticking to the bed? REPRAGE – NEMA17 STEPPERS, MUCH DIFFERENCE BETWEEN 0.9 AND On my Prusa Mendel RepRap I have Wantai stepper motors. I get them off Ebay, straight from the factory. Like something out of Home Improvement, I went a little over the top and got steppers that are a tad overpowered for 3D printing.But, I love them, they barely break a REPRAGE – REPRAGEHOW BANKSY AUTHENTICATES HIS WORKHOW MUCH POWER DOES A 3D PRINTER USEDIRECTORYBODEGA 3D printing and other software curiosities by Clinton Freeman. I’m Clinton Freeman. I live in Queensland, Australia and I’m a software engineer that builds technology for creative projects: REPRAGE – HOW TO MEASURE YOUR TRUE HEADING WITH A HMC5883L The HMC5883L magnetometer communicates over an i2c bus, and will run off between 3 to 5 volts. So you’ll only need four wires to hook it up to an Arduino ProMicro.RAW is wired to 5V (assuming your input supply is 5 volts), pin 3 to SCL, pin 2 to SDA and GND goes to GND. REPRAGE – DFPLAYERMINI CHEAT SHEET You will also need to copy these files across in order, the DFPlayer seems to use some sort of creation timestamp when the files are index. So don’t copy 0003.mp3 and REPRAGE – HOW TO IMPROVE THE STABILITY OF A RASPBERRY PI Make sure you are running a 5-volt power supply that provides at least 2.5 Amps.. And if you are attaching USB peripherals, like a webcam or something. Go with an external powered USB hub. REPRAGE – NON-BLOCKING CONTROL OF STEPPER MOTORS ON ARDUINO Stepper motors are ideal for 3D printers, robots, mills and lathes; you can program them to rotate by very precise amounts. Push the right signal (“I will have 36 degrees please”) into the motor driver and it will spin or ‘step’ by the nominated amount. REPRAGE – WHAT POWER INPUT IS REQUIRED FOR THE RAMPS 1.4RAMPS 1 4 MANUALRAMPS 1 4 PINOUTRAMPS 1 4 FAN WIRINGRAMPS 1 4 SCHEMATIC PDFRAMPS 1 4 WIRING DIAGRAMAT POWER SUPPLY WIRING DIAGRAM The power requirements and wiring for a RAMPS 1.4 board for a 3Dprinter.
REPRAGE – HOW DO I STOP PLASTIC FROM OOZING WHEN 3D PRINTING? Lots of 3D printing problems stem from plastic oozing out of the hotend, as everything warms up and the plastic becomes soft and begins to flow, gravity takes hold REPRAGE – TEETHTRACKER: HOW TO TRACK MOBILE PHONES USINGCAN BLUETOOTH TRACK YOUR PHONE Pretty much bang on a year ago was a pretty hectic time for me. I had lots going on, travelling for work, planning a secret wedding and hacking together something that could track 40 REPRAGE – WILL PRINTING DIRECTLY ONTO THE PRINT BED RUIN IT? A friend of mine asked the following on the now defunct Makers StackExchange.. Question. I am about to assemble a Printrbot LC with heated bed and get started with 3D printing. I will be printing using PLA. Should I cover the print bed with glass or Kapton tape before I try printing for the first time or is that only necessary if I have trouble with the print sticking to the bed? REPRAGE – NEMA17 STEPPERS, MUCH DIFFERENCE BETWEEN 0.9 AND On my Prusa Mendel RepRap I have Wantai stepper motors. I get them off Ebay, straight from the factory. Like something out of Home Improvement, I went a little over the top and got steppers that are a tad overpowered for 3D printing.But, I love them, they barely break aREPRAGE – REPRAGE
3D printing and other software curiosities by Clinton Freeman. I’m Clinton Freeman. I live in Queensland, Australia and I’m a software engineer that builds technology for creative projects: REPRAGE – HOW TO CONTROL DMX DEVICES WITH THE RASPBERRY PI. Take note of the ttyUSB2 part. Your trailing number might be different, but that is the address to use when programming your DMX controller. From here you will also need some three-pin XLR connectors to hook up your DMX controller to whatever device you want to program.. The programming language Go and the DMX library from Akualab can program your controller. REPRAGE – 3D PRINTER PLA MOISTURE PROBLEMS AND STORAGE Not long after getting into 3D printing, you start hearing about all the different ways people store PLA (Polylactic acid). The Internet is scattered with systems ranging from the very simple to elaborate PLA humidors.Often accompanied by scant details, but ominous REPRAGE – HOW TO CONNECT THE RASPBERRY PI TO A BLUETOOTH In addition to your Raspberry Pi, you will need the following hardware: A Bluetooth 4.0 dongle. A Polar H7 heart rate monitor *.; Next, download, compile and install the latest ‘BlueZ’ on yourRaspberry Pi.
REPRAGE – HOW TO DEPLOY DOCKER CONTAINERS TO AN ARDUINO Next we need to give Boot2Docker access to Arduino boards that you plug into your host machine. Plug your arduino into an available USB slot. Make sure the boot2docker-vm is not running. REPRAGE – QUICK GUIDE TO CALIBRATING THE SCALE OF YOUR 3D Now, write down the measurement from your callipers, (in our example 67.22mm). Ok, so now we know exactly how far out of whack our x-axis is. Open up the configuration.h file of your firmware, looking for the line that reads something like (the actual numbers will vary): REPRAGE – HOW BANKSY AUTHENTICATES HIS WORK When street artist Banksy first started selling screen prints online, they became a popular target for forgers looking to make a few bucks duping unsuspecting fans. It quickly got out of hand and must have been infuriating for both Banksy and his followers. Normally this is where galleries begin to flex their authority and declare which prints are authentic and which are fake. REPRAGE – HOW TO EXPORT GCODE FROM AUTODESK FUSION360 FOR Step #3. Now we are ready to start giving actions for our CNC mill to perform. The first is to clear out all the holes in the piece, some of these are countersunk, so we will use ‘pocket clearing’ for this. REPRAGE – WHY DO MY 3D PRINTS CURL AND LIFT? One of the most common problems for people starting out with their first 3D prints is getting the print to ‘stick’ to the build platform.Often you can’t even get the print to start correctly and you will be left with a REPRAGE – WHAT ARE THE BEST SD CARDS TO USE IN A RASPBERRY PI? SD cards have a limited life, and the more you read and write to them, the shorter their lifespan. In a Raspberry Pi this makes things a little tricky, the SD card gets a much tougher workout than it normally would in something like a digital camera.HELLO
My name is Clinton Freeman, a software engineer who lives in Queensland, Australia. These days I mostly build technology for creative projects . Stuff like: LATEST: BOOK REVIEW - STEALING FIRE I don’t know how I feel about ‘Stealing Fire’ by Steven Kotler and Jamie Wheal. It’s the sort of book you would find lurking at a store in an airport terminal. Not that airport sales define the quality of the book. I guess it is more the Silicon Valley culture that tumbles from the pages within. Kotler and Wheal’s basic premise is that you can hack your mind and body to enter a ‘non-ordinary’ thought process. One of ‘peak performance’, where > … all aspects of performance, both mental and physical, go through> the roof.
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ARTICLES:
I find writing helpful and share my articles on the off chance that they're useful to others. A complete article list can be found in the directory , but here are some of the more popular ones:3D PRINTING:
* Why do my 3D prints curl and lift? * How much power does a 3D printer use? * How do I stop plastic from oozing when 3D printing? * Is 3D Printed PLA food safe?RASPBERRY PI:
* Raspberry Pi comparison chart * What are the best SD cards to use in a Raspberry Pi? * How to Bootstrap a Raspberry Pi from your Laptop * Using Golang to connect Raspberry PIs and Arduinos over serialART:
* How Banksy Authenticates His Work * Book Review - Seeing Is Forgetting the Name of the Thing One Sees.* ASCII Art
OTHER:
* How responsive are Estimote iBeacons? * An Open Love Letter to Van Neistat * Original Reference Material * Non-blocking control of stepper motors on ArduinoFAMILY TREE:
The following 'family tree' of influences is a bit of an advent calender, initialed names are my current research front. After I have found out as much as I can about the work of someone I admire, I write them a love letter. The initials of their influences get added and thefamily tree grows.
reprage.com
Meagan Streader
R.ID.WS.SCarl Turner???Michael Candy
Tom Sachs
L.CR.KVan Neistat
Tom Sachs
S.KW.AAlexander CalderP.MJ.MEngineer
X?J.BA.WB.FJ.TJeff Atwood E.TS.MK.SAaron SwartzF.A?Elon Musk
H.HB.FW.CAdrian Bliss ??R.HD.KShaun Freeman???
HOW CAN I CONTACT YOU? my-first-name@reprage.com Obviously, you’ll want to replace my-first-name with my actual first name. Hi! Subconsciously you already know this, but let's make it obvious. Hopefully this article was helpful. You might also find yourself following a link to Amazon, Lego or eBay to learn more about parts or equipment. If you end up placing an order, I make a couple of dollarydoos. We aren't talking a rapper lifestyle of supercars and yachts, but it does help pay for the stuff you see here. So a massive shoutout to everyone that enables this place. Thanks! Copyright Ⓒ Clinton Freeman, 2019. You can also find me ontwitter , github
and instagram
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