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The signal and the power supply go together with in total two wires: GND and 5V. With this bus we can wire among other the throttle switch, brake sensor, pedal assist sensor and the speed sensor. Because the number of cables has been reduced drastically, very robust RC-model connectors can be used, because these connectors are only availableMOTORS COMPARED
Ebike mid-drive motors are often compared with each other, but this relates always to behavior and performance and these properties are mainly determined by software. With another software or motor controller, mid-drive motors may behave completely different. Most motors use pedal assist control and this is in particular verysoftware dependent.
TONGSHENG TSDZ2
Tongsheng TSDZ2 vs Bafang BBS02. The Bafang BBS02B has a low gear ratio of 20, which causes a low motor-efficiency. That is why the Bafang BBS02 was not interesting for me, and I did not initially include it in the comparison. Later, in 2014, the Tongsheng TSDZ2 was released, and this is a much better alternative to the Bafang BBS02B.HUB MOTOR SELECTION
The LEM 130 95s model as a weight of 3kg and an output of 3kW. The peak efficiency is 87%. Lynch axial gap motors. Here is another example, the "LRP 50920 Vector 8 Brushless Modified" RC car motor: 1.360W, 275g, efficiency 91%. LRP 50920 Vector 8 Brushless 1.360W 275g Efficiency 91%. It should be noted that all these motors are highspeed.
DESCRIPTIVE VARIABLE NAMESYAMAHA PW-SE
Yamaha PW-SE facts. Yamaha PW-SE tear down. Electronics board. Blown up EDB9. Zero cadence support with 2 freewheels. Yamaha PW-SE gearwheels. Tuning the Yamaha PW-SE motor for more power. Broken nylon helix gearwheel repair. Pressure-balance-element.BATTERY HACK
Hacking the Yamaha battery. As with other brands, the Yamaha PW-X2 / PW-SE doesn't allow to use any 3e party battery. But with the use of the dongle described here, the Yamaha ebike will be hacked so that you can use any battery instead of the original expensive Yamaha battery. At electric bicycles, only a battery of the own brand can be used BOSCH ACTIVE LINE 3 PCB Bosch Active Line 3 printed circuit board taken apart. Note that the SMD components are soldered with a very high quality, comparable to that of smartphones. Instead of varnishing the whole PCB, this has only been done locally. Serial numbers: 37170191 / 1270014076.GAZELLE REBUILD
The author of this article is Paul Alting van Geusau, Summer 2017, Munich, Germany. Gazelle Orange Innergy e-Bikes and home-made derivation. When introducing their Orange Innergy e-Bike (about 2007) in the Netherlands it was, despite its price (about 2199 €), a Gazelle best seller until numerous problems threw doubt on the quality of the electric drive system. HERSENEN VS COMPUTER (NL)SEE MORE ON AVDWEB.NLHOME
The signal and the power supply go together with in total two wires: GND and 5V. With this bus we can wire among other the throttle switch, brake sensor, pedal assist sensor and the speed sensor. Because the number of cables has been reduced drastically, very robust RC-model connectors can be used, because these connectors are only availableMOTORS COMPARED
Ebike mid-drive motors are often compared with each other, but this relates always to behavior and performance and these properties are mainly determined by software. With another software or motor controller, mid-drive motors may behave completely different. Most motors use pedal assist control and this is in particular verysoftware dependent.
TONGSHENG TSDZ2
Tongsheng TSDZ2 vs Bafang BBS02. The Bafang BBS02B has a low gear ratio of 20, which causes a low motor-efficiency. That is why the Bafang BBS02 was not interesting for me, and I did not initially include it in the comparison. Later, in 2014, the Tongsheng TSDZ2 was released, and this is a much better alternative to the Bafang BBS02B.HUB MOTOR SELECTION
The LEM 130 95s model as a weight of 3kg and an output of 3kW. The peak efficiency is 87%. Lynch axial gap motors. Here is another example, the "LRP 50920 Vector 8 Brushless Modified" RC car motor: 1.360W, 275g, efficiency 91%. LRP 50920 Vector 8 Brushless 1.360W 275g Efficiency 91%. It should be noted that all these motors are highspeed.
DESCRIPTIVE VARIABLE NAMESYAMAHA PW-SE
Yamaha PW-SE facts. Yamaha PW-SE tear down. Electronics board. Blown up EDB9. Zero cadence support with 2 freewheels. Yamaha PW-SE gearwheels. Tuning the Yamaha PW-SE motor for more power. Broken nylon helix gearwheel repair. Pressure-balance-element.BATTERY HACK
Hacking the Yamaha battery. As with other brands, the Yamaha PW-X2 / PW-SE doesn't allow to use any 3e party battery. But with the use of the dongle described here, the Yamaha ebike will be hacked so that you can use any battery instead of the original expensive Yamaha battery. At electric bicycles, only a battery of the own brand can be used BOSCH ACTIVE LINE 3 PCB Bosch Active Line 3 printed circuit board taken apart. Note that the SMD components are soldered with a very high quality, comparable to that of smartphones. Instead of varnishing the whole PCB, this has only been done locally. Serial numbers: 37170191 / 1270014076.GAZELLE REBUILD
The author of this article is Paul Alting van Geusau, Summer 2017, Munich, Germany. Gazelle Orange Innergy e-Bikes and home-made derivation. When introducing their Orange Innergy e-Bike (about 2007) in the Netherlands it was, despite its price (about 2199 €), a Gazelle best seller until numerous problems threw doubt on the quality of the electric drive system. HERSENEN VS COMPUTER (NL)SEE MORE ON AVDWEB.NLBMS - AVDWEB.NL
Also called bleeding cell balancers or dissipative cell balancers. Resistors are used to bleed the energy from the good cells, in order to match the voltage to those of the bad cells. It is clear that this is wasting a lot of energy because the good cells are in the majority. Passive cell balancing circuit.3.3V VACUUM TUBE
Tube preamp with 3.3V filament and supply voltage. 3.3V tube preamp triangle waveforms. Note that the distortion is small. 5V tube preamp triangle waveforms. There are some oddities caused by the low supply voltage of 3.3V. The grid-cathode voltage is positive instead of negative. The grid current is very high, 0.3 mA.AVDWEB
The KU63 motor controller is small and lightweight and well suited for 250W motors. BLDC motor 36V 250W. Maximum current 12A. Motor HALL sensor or sensorless operation. Battery undervoltage detection ~27.7V. Overtemperature protection. Brake high voltage level and low voltage level input. Control LED inside. Weight 200g.MINI POWER SUPPLY
Cheap mini power supplies. Here, I want to tell a story about mini power supplies. Conventional power supplies, which use mains transformers, have the disadvantage that the product becomes heavy and large, which makes shipping by mail expensive. For this reason, I use the 3.3V NA01-T2S03 AC-DC module for my ready-made spot weldercontroller:
PANASONIC HV PSU
How to test the Panasonic microwave oven HV inverter. Make a wire loop around the transformer core and connect a diode 1N4007 and resistor of 10Ω / 1W in series. If the HV inverter works well, the voltage should be: 1.6V with the microwave tube connected. 1.9V with the microwave tube disconnected. You can also use an oscilloscope; the signalsYAMAHA PW-X2
My choice is the Yamaha PW-X2 motor for the following reasons: Zero cadence support. Relatively low weight of 3.122 kg. Any battery can be used on the Yamaha PW-X2 ( with a hack) The efficiency of the Yamaha PW-X2 motor is the highest of all mid-drive motors 1*) 1*) This is due to the large gear ratio. The internal motor therefore has a highspeed.
SAMD21 FOR DUMMIES
SAMD21 introduction. Since 2015, there is a new powerful microcontroller available which can be programmed by the Arduino platform: the SAMD21. It is a 48MHz 32-bit ARM Cortex M0+ low power processor. Since it is quite new, there is not so much information about it on the Internet. That is why I will share my experience withthe SAMD21 and
MICROWAVE OVEN SAFETY Microwave oven is 5 times as dangerous as the overhead line of a train! The high voltage inside a microwave oven is 3400Vrms. Because the power is proportional to the square of the voltage, it is 5 times as dangerous as the 1500V overhead line of a FORMULAS - AVDWEB.NL Here, I share technical solutions that arised during the developmentof my solar-bike.
NATIVE PORT PROBLEMS Control panel > Device Manager > Ports > Arduino Zero > RMB > Properties > Port settings > Advanced > Com Port Number set to 10 > OK. If Ports is not listed in the Device Manager than open the View menu and select “Show hidden devices”. Port 10 may be selected already, ignore any message about that. Note that you must use alwaysuse the
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Intro. I have developed a 2-wire control bus for e-bikes. The signal and the power supply go together with in total two wires: GND and 5V. With this bus we can wire among other the throttle switch, brake sensor, pedal assist sensor and the speed sensor.MOTORS COMPARED
Which e-bike mid-drive motor is the best? In this article, mid-drive motors of 250W and maximal 3.5kg are compared from a mechanical viewpoint.. Mid-drive motors compared from a mechanical viewpointTONGSHENG TSDZ2
Tongsheng TSDZ2 vs Bafang BBS02. The Bafang BBS02B has a low gear ratio of 20, which causes a low motor-efficiency. That is why the Bafang BBS02 was not interesting for me, and I did not initially include it in the comparison.HUB MOTOR SELECTION
PM motor scaling laws. Hubmotors, such as used for bicycles, belongs to the category small PM motors (permanent magnetic). These motors have by nature a lower efficiency than large ones. DESCRIPTIVE VARIABLE NAMESYAMAHA PW-SE
The gear ratio is 101/16 * 56/8 = 44.2 The motor speed of the Yamaha PW-SE at a cadence of 100 is 4420 rpm. Tuning the Yamaha PW-SE motorfor more power
BATTERY HACK
Introduction. This device has two uses: Yamaha hacking dongle to use any 3rd party battery instead of the original Yamaha battery.Described here
GAZELLE REBUILD
The author of this article is Paul Alting van Geusau, Summer 2017, Munich, Germany. Gazelle Orange Innergy e-Bikes and home-made derivation. When introducing their Orange Innergy e-Bike (about 2007) in the Netherlands it was, despite its price (about 2199 €), a Gazelle best seller until numerous problems threw doubt on the quality of the electric drive system. BOSCH ACTIVE LINE 3 PCB Bosch Active Line 3 printed circuit board taken apart. Note that the SMD components are soldered with a very high quality, comparable to that of smartphones. HERSENEN VS COMPUTER (NL)SEE MORE ON AVDWEB.NLHOME
Intro. I have developed a 2-wire control bus for e-bikes. The signal and the power supply go together with in total two wires: GND and 5V. With this bus we can wire among other the throttle switch, brake sensor, pedal assist sensor and the speed sensor.MOTORS COMPARED
Which e-bike mid-drive motor is the best? In this article, mid-drive motors of 250W and maximal 3.5kg are compared from a mechanical viewpoint.. Mid-drive motors compared from a mechanical viewpointTONGSHENG TSDZ2
Tongsheng TSDZ2 vs Bafang BBS02. The Bafang BBS02B has a low gear ratio of 20, which causes a low motor-efficiency. That is why the Bafang BBS02 was not interesting for me, and I did not initially include it in the comparison.HUB MOTOR SELECTION
PM motor scaling laws. Hubmotors, such as used for bicycles, belongs to the category small PM motors (permanent magnetic). These motors have by nature a lower efficiency than large ones. DESCRIPTIVE VARIABLE NAMESYAMAHA PW-SE
The gear ratio is 101/16 * 56/8 = 44.2 The motor speed of the Yamaha PW-SE at a cadence of 100 is 4420 rpm. Tuning the Yamaha PW-SE motorfor more power
BATTERY HACK
Introduction. This device has two uses: Yamaha hacking dongle to use any 3rd party battery instead of the original Yamaha battery.Described here
GAZELLE REBUILD
The author of this article is Paul Alting van Geusau, Summer 2017, Munich, Germany. Gazelle Orange Innergy e-Bikes and home-made derivation. When introducing their Orange Innergy e-Bike (about 2007) in the Netherlands it was, despite its price (about 2199 €), a Gazelle best seller until numerous problems threw doubt on the quality of the electric drive system. BOSCH ACTIVE LINE 3 PCB Bosch Active Line 3 printed circuit board taken apart. Note that the SMD components are soldered with a very high quality, comparable to that of smartphones. HERSENEN VS COMPUTER (NL)SEE MORE ON AVDWEB.NLBMS - AVDWEB.NL
Intro. A battery management system (BMS) is an electronic system that manages a rechargeable battery. A BMS that only contains batteryprotection
MINI POWER SUPPLY
Cheap mini power supplies. Here, I want to tell a story about mini power supplies. Conventional power supplies, which use mains transformers, have the disadvantage that the product becomes heavy and large, which makes shipping by mail expensive.3.3V VACUUM TUBE
Vacuum tubes are awkward, need always 6.3V filament and high supply voltage? No, they can also work on 3.3V. I have built a vacuum tubepre-amplifier that
AVDWEB
250W DC brushless motor controller X8M06-C. China brushless motor controller schematic. Here is the schematic of the KU63 motor controller which may FORMULAS - AVDWEB.NL Here, I share technical solutions that arised during the developmentof my solar-bike.
YAMAHA PW-X2
Yamaha PW-X vs PW-X2. As far as I know, the mechanics of Yamaha PW-X2 is almost the same as the Yamaha PW-X. So everything that is told here also applies to the PW-X version.PANASONIC HV PSU
Contactless testing by measuring magnetic field. Here I will tell you how you can check the operation of the Panasonic HV inverter on a safeand easy way.
SAMD21 FOR DUMMIES
SAMD21 introduction. Since 2015, there is a new powerful microcontroller available which can be programmed by the Arduino platform: the SAMD21. It is a 48MHz 32-bit ARM Cortex M0+ low powerprocessor.
MICROWAVE OVEN SAFETY The microwave oven serial killer. What is more dangerous, the overhead line of a train or the inside of your microwave oven? It is the microwave oven, because of the higher voltage that is used. NATIVE PORT PROBLEMS Here, I share technical solutions that arised during the developmentof my solar-bike.
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Mid-drive vs hub
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MOST RECENT ARTICLES * Elektrische fiets middenmotoren presteren nauwelijks beter dannaafmotoren
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THE MAXUN SOLARBIKE PROJECT * Details Last Updated: 29 May 2021 BUILD YOUR OWN MAXUN SOLARBIKE At first, I planned selling the Maxun solarbike in small quantities, that’s why I patented it in the USA. But building the Maxun is quite time consuming and expensive, the bike would only be available to the happy few. So, I’m still the sole owner of the Maxun, but I wish everyone this pleasure. That’s why I’m going to share the solar bike under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Read more: The Maxun solarbike project DISPER PRECISION SMD MICRO-DOT SOLDER PASTE DISPENSER * Details Last Updated: 05 June 2021 With this tool you can precisely dispense very small dots of solder paste. Although this solder paste dispenser is cheap and uncomplicated, it works better for small SMD parts than many automatic dispensers. It is used in aerospace and medical electronicscompanies.
Read more: Disper precision SMD micro-dot solder paste dispenser ARDUINO SWITCH AND BUTTON LIBRARY WITH SHORT/LONG PRESS, DOUBLE CLICKAND BEEP.
* Details Last Updated: 03 April 2021 Switches and push buttons need debouncing. It is straightforward to do this with software, using a library. The advantages of the Switchlibrary are:
Read more: Arduino switch and button library with Short/Long Press, Double Click and Beep. YAMAHA HACKING DONGLE TO USE ANY 3RD PARTY BATTERY INSTEAD OF THEYAMAHA BATTERY.
* Details Last Updated: 29 May 2021INTRODUCTION
This device has two uses: * Yamaha hacking dongle to use any 3rd party battery instead of the original Yamaha battery. Described here... * Wireless battery Fuel Gauge /Watt meter
Read more: Yamaha hacking dongle to use any 3rd party battery instead of the Yamaha battery. CONNECTORLESS SELF-CLAMPING ZIGZAG TEST CONNECTOR * Details Last Updated: 19 May 2021 For programming and testing, I don’t use physical connectors on the PCB but connectorless self-clamping zigzag connectors. The pin header of the programming tool is inserted directly into the holes. By the zigzag positions of the PCB holes, it provides lateral pressure, sufficient to grip the pins and allow good connection. For use as for programming and testing, it works fine, I have never experienced anycontact problems.
Read more: Connectorless self-clamping zigzag test connector ROBUST TWO-WIRE (GND, 5V) CURRENT CONTROLLED BUS FOR EBIKES * Details Last Updated: 21 May 2021INTRO
I have developed a 2-wire control bus for e-bikes. The signal and the power supply go together with in total two wires: GND and 5V. With this bus we can wire among other the throttle switch, brake sensor, pedal assist sensor and the speed sensor. Because the number of cables has been reduced drastically, very robust RC-model connectors can be used, because these connectors are only available with a maximum ofthree pins.
Read more: Robust two-wire (GND, 5V) current controlled bus forebikes
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* Details Last Updated: 04 May 2021 I'm an inventor and new products should always be as elegant and simple as possible. I have 40 years of experience in electronics andsoftware.
During the development of the Maxun One solar bike , I constantly needed special equipment, parts and software, and so I rolled from one project to another. In September 2010, I started this website where I share my ideas and designs with the world. On my webshop, I sell products that I initially made for myself, but that were also interesting for others, such as a spot-welder controller and a solder-paste dispenser. Read more: About this website DIY BATTERY TAB SPOT WELDER * Details Last Updated: 11 May 2020 I have developed the D.I.Y spot welder because I needed a special spot welder for the building of my Maxun One solar bike. It turned out that the spot welder is being built by many people worldwide, so I have published here the entire building project. Read more: DIY battery tab spot welder DUAL PULSE BATTERY TAB SPOTWELDER CONTROLLER WITH ZERO CROSSINGDETECTOR
* Details Last Updated: 23 May 2021 This advanced controller was used by many people and has a unique reduced inrush current circuit that prevents main fuse blow up. Read more: Dual pulse battery tab spotwelder controller with zerocrossing detector
ARDUINO UNIVERSAL POWER CONTROL (UPC) BOARD * Details Last Updated: 16 April 2021 This Arduino board can be used for any project where something needs to be controlled and that is menu-driven. See the open source PCB Eagle files on GitHub. It includes
Gerber files for let making the PCB. Read more: Arduino Universal Power Control (UPC) board VACUUM TUBE WORKS ON 3.3V TOTALLY * Details Last Updated: 06 December 2020 Vacuum tubes are awkward, need always 6.3V filament and high supply voltage? No, they can also work on 3.3V. I have built a vacuum tube pre-amplifier that runs entirely on 3.3V, inclusive the filament voltage. Apparently, the electron emission of the filament still works at 3.3V. Despite the very low supply voltage, the tube amplifier stillworks well.
Read more: Vacuum tube works on 3.3V totally DILY3217 MINI ATTINY3217 DEVELOPMENT BREAKOUT BOARD IN DIL24 * Details Last Updated: 07 May 2021 30X10MM ATTINY3217 ARDUINO BREAKOUT BOARD IN DIL24 I am looking for someone who can take over the production and sales for a small one-time fee. I will place a link to your shop here too. The Dily3217 is an Arduino compatible development board of 30x10mm, easy to integrate since it has a breadboard-friendly narrow DIL24 package. It is powered by the new ATtiny3217 and it has 21 I/O lines. Read more: Dily3217 mini ATtiny3217 development breakout board inDIL24
SAM 15X15MM ARDUINO ZERO COMPATIBLE SAMD21 BOARD * Details Last Updated: 23 December 2020 The SAM 15x15 is a very small Arduino development board, with the same powerful controller as the Arduino Zero: the SAMD21G18. ALL I/O PINS ARE USED: despite the small size, it has MORE I/O PINS than the Arduino Zero or SAMD21 Mini/Dev Breakout: 34 INSTEAD OF 21. Due to the very small dimensions it will fit easily into all embedded electronic projects, even in microdrones. Read more: SAM 15x15mm Arduino Zero compatible SAMD21 board S-KU63 E-BIKE MOTOR CONTROLLER * Details Last Updated: 09 January 2021 Read more: S-KU63 e-bike motor controller BOSCH ACTIVE LINE 3 MID-DRIVE MOTOR TEAR DOWN * Details Last Updated: 01 May 2021 For my solar powered bicycle, the Maxun One, I designed a very powerful and lightweight mid-drive motor. I also wanted to investigate whether I could use a Bosch Active Line 3 motor. The Bosch motor weight is 2975g, this is relatively lightweight for a mid-drive motor, but it is still too heavy for my solar bike. Read more: Bosch Active Line 3 mid-drive motor tear down CHEAP DIY PRECISION VOLTAGE CURRENT REFERENCE STANDARD * Details Last Updated: 09 September 2018 I have developed a cheap multimeter calibration reference by which you can calibrate a digital multimeter yourself. Here we calibrate my favorite multimeter, the PEAKTECH 2010, it has a lot of features andit cost just €35.
Read more: Cheap DIY precision voltage current reference standardMY TODO LIST
* Details Last Updated: 08 April 2020 I have inventoried my on-going projects, because I honestly speaking lost the overview. I had started many projects but many of them are on-hold because they, on closer inspection, cost years to finish and in the meantime other things had become more important and I keep getting interesting new ideas. Read more: My todo list This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
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