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DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
KIVY – DIGITALJUNKY Make a Snake game for Android written in Python – Part 3. February 5, 2015. May 27, 2017 alexis.matelin. 3 Comments. I hope you enjoyed the first two sections of the tutorial. If you got through it, rest assured that the hardest part is behind us. The game engine is at 90% done at that point, and handling screens is very straightforward inkivy.
PLAYING AROUND WITH NEURAL NETWORKS In my last post I said that I would try to replicate the code in Python. Well here it is. It is a first attempt, and unfortunately the predictive power of the network thus created is awful (it’s even worst than a random guess).DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
KIVY – DIGITALJUNKY Make a Snake game for Android written in Python – Part 3. February 5, 2015. May 27, 2017 alexis.matelin. 3 Comments. I hope you enjoyed the first two sections of the tutorial. If you got through it, rest assured that the hardest part is behind us. The game engine is at 90% done at that point, and handling screens is very straightforward inkivy.
PLAYING AROUND WITH NEURAL NETWORKS In my last post I said that I would try to replicate the code in Python. Well here it is. It is a first attempt, and unfortunately the predictive power of the network thus created is awful (it’s even worst than a random guess). DEMO – DIGITALJUNKY Quick Saturday hack – the RGB LED push-button; Know when to pee with the ATtiny! (badum tss) My first hackathon as a mentor: WHNYC 2015; Volumetric display and data visualization : 4 animations for theL3DCube
PROGRAMMING
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. L3D CUBE VISUALIZATIONS PART 1: REAL-TIME SCATTER PLOT Overview. Basically a demonstration of the plotting capabilities of the cube. We will retrieve some data from a public thingspeak channel (they correspond to data points posted by a connected barometer installed in my living room).. The JSON returned by the Thingspeak API is parsed on processing and displayed on the cube. Each serie of data is represented by a 2 voxels thick scatter plot. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
THE HACK-O-LANTERN PROJECT What we will be making. The idea is to make a jack-o-lantern controlled via twitter. Commands sent to a specific twitter account allow to change the color of the light inside the pumpkin or perform a pre-defined animation such as opening the pumpkin or playing a spookysound effect.
MAKE AN AUTOMATED TEA STEEPER- WITH ARDUINO Here’s how the circuit works : Potentiometer(RV1): it is a resistor of variable value.Depending on the position of the axis, the resistance fluctuates between 0 and infinity, thus 0->5v is fed to the analog pin A5 of the Arduino.VOLUMETRIC DISPLAY
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON In the following tutorial, I will explain how to code and deploy a simple app on Android : the classic snake game that we all played on the famous and indestructible nokia 3210 (well, my version of it anyway). I personally code on Ubuntu 14.10 with Python 2.7,FEBRUARY 2015
I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in thebox
JANUARY 2015
I started to tinker with electronics when a friend gave me an Arduino starter pack a year ago. At the time I only had a few components (some resistors, leds, jumper cables and push buttons) and it was easy to remember where everything was.DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
KIVY – DIGITALJUNKY Make a Snake game for Android written in Python – Part 3. February 5, 2015. May 27, 2017 alexis.matelin. 3 Comments. I hope you enjoyed the first two sections of the tutorial. If you got through it, rest assured that the hardest part is behind us. The game engine is at 90% done at that point, and handling screens is very straightforward inkivy.
PLAYING AROUND WITH NEURAL NETWORKS In my last post I said that I would try to replicate the code in Python. Well here it is. It is a first attempt, and unfortunately the predictive power of the network thus created is awful (it’s even worst than a random guess).DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
KIVY – DIGITALJUNKY Make a Snake game for Android written in Python – Part 3. February 5, 2015. May 27, 2017 alexis.matelin. 3 Comments. I hope you enjoyed the first two sections of the tutorial. If you got through it, rest assured that the hardest part is behind us. The game engine is at 90% done at that point, and handling screens is very straightforward inkivy.
PLAYING AROUND WITH NEURAL NETWORKS In my last post I said that I would try to replicate the code in Python. Well here it is. It is a first attempt, and unfortunately the predictive power of the network thus created is awful (it’s even worst than a random guess). DEMO – DIGITALJUNKY Quick Saturday hack – the RGB LED push-button; Know when to pee with the ATtiny! (badum tss) My first hackathon as a mentor: WHNYC 2015; Volumetric display and data visualization : 4 animations for theL3DCube
PROGRAMMING
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. L3D CUBE VISUALIZATIONS PART 1: REAL-TIME SCATTER PLOT Overview. Basically a demonstration of the plotting capabilities of the cube. We will retrieve some data from a public thingspeak channel (they correspond to data points posted by a connected barometer installed in my living room).. The JSON returned by the Thingspeak API is parsed on processing and displayed on the cube. Each serie of data is represented by a 2 voxels thick scatter plot. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
THE HACK-O-LANTERN PROJECT What we will be making. The idea is to make a jack-o-lantern controlled via twitter. Commands sent to a specific twitter account allow to change the color of the light inside the pumpkin or perform a pre-defined animation such as opening the pumpkin or playing a spookysound effect.
MAKE AN AUTOMATED TEA STEEPER- WITH ARDUINO Here’s how the circuit works : Potentiometer(RV1): it is a resistor of variable value.Depending on the position of the axis, the resistance fluctuates between 0 and infinity, thus 0->5v is fed to the analog pin A5 of the Arduino.VOLUMETRIC DISPLAY
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON In the following tutorial, I will explain how to code and deploy a simple app on Android : the classic snake game that we all played on the famous and indestructible nokia 3210 (well, my version of it anyway). I personally code on Ubuntu 14.10 with Python 2.7,FEBRUARY 2015
I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in thebox
JANUARY 2015
I started to tinker with electronics when a friend gave me an Arduino starter pack a year ago. At the time I only had a few components (some resistors, leds, jumper cables and push buttons) and it was easy to remember where everything was.DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. MAKE AN AUTOMATED TEA STEEPER- WITH ARDUINO Here’s how the circuit works : Potentiometer(RV1): it is a resistor of variable value.Depending on the position of the axis, the resistance fluctuates between 0 and infinity, thus 0->5v is fed to the analog pin A5 of the Arduino. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON class PlaygroundScreen(Screen): game_engine = ObjectProperty(None) def on_enter(self): # we screen comes into view, start the game self.game_engine.start() We might as well prepare the OptionsPopup class right now. We have to anyway otherwise the bindings we’re going to make in a few steps wont work properly. class OptionsPopup(Popup): pass. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON In the following tutorial, I will explain how to code and deploy a simple app on Android : the classic snake game that we all played on the famous and indestructible nokia 3210 (well, my version of it anyway). I personally code on Ubuntu 14.10 with Python 2.7,DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. MAKE AN AUTOMATED TEA STEEPER- WITH ARDUINO Here’s how the circuit works : Potentiometer(RV1): it is a resistor of variable value.Depending on the position of the axis, the resistance fluctuates between 0 and infinity, thus 0->5v is fed to the analog pin A5 of the Arduino. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON class PlaygroundScreen(Screen): game_engine = ObjectProperty(None) def on_enter(self): # we screen comes into view, start the game self.game_engine.start() We might as well prepare the OptionsPopup class right now. We have to anyway otherwise the bindings we’re going to make in a few steps wont work properly. class OptionsPopup(Popup): pass. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON In the following tutorial, I will explain how to code and deploy a simple app on Android : the classic snake game that we all played on the famous and indestructible nokia 3210 (well, my version of it anyway). I personally code on Ubuntu 14.10 with Python 2.7, AND YOU, WHAT’S YOUR ORGANIZATION SYSTEM ? In order to have a good picture of my stocks and to easily retrieve any specific component, I entered every part in a spreadsheet, specifying the drawer number in which itPROGRAMMING
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. THE HACK-O-LANTERN PROJECT What we will be making. The idea is to make a jack-o-lantern controlled via twitter. Commands sent to a specific twitter account allow to change the color of the light inside the pumpkin or perform a pre-defined animation such as opening the pumpkin or playing a spookysound effect.
L3D CUBE VISUALIZATIONS PART 1: REAL-TIME SCATTER PLOT Overview. Basically a demonstration of the plotting capabilities of the cube. We will retrieve some data from a public thingspeak channel (they correspond to data points posted by a connected barometer installed in my living room).. The JSON returned by the Thingspeak API is parsed on processing and displayed on the cube. Each serie of data is represented by a 2 voxels thick scatter plot. MAKE AN AUTOMATED TEA STEEPER- WITH ARDUINO Here’s how the circuit works : Potentiometer(RV1): it is a resistor of variable value.Depending on the position of the axis, the resistance fluctuates between 0 and infinity, thus 0->5v is fed to the analog pin A5 of the Arduino. ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95.VOLUMETRIC DISPLAY
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
LIGHT PAINTING ON ICE The idea was not only to admire the resulting glow on the ice but also to make an attempt at some light painting. When we talked about it with my friend (the one taking the pictures), I immediately imagined myself skating like a pro and seeing my beautiful trajectory afterwards on the picture. PLAYING AROUND WITH NEURAL NETWORKS In my last post I said that I would try to replicate the code in Python. Well here it is. It is a first attempt, and unfortunately the predictive power of the network thus created is awful (it’s even worst than a random guess).DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. THE HACK-O-LANTERN PROJECT ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
PLAYING AROUND WITH NEURAL NETWORKS In my last post I said that I would try to replicate the code in Python. Well here it is. It is a first attempt, and unfortunately the predictive power of the network thus created is awful (it’s even worst than a random guess).DIGITALJUNKY
Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities. MAKE YOUR OWN DATA PLATFORM FOR THE INTERNET OF THINGS Prologue. I recently wrote a tutorial explaining how to make a connected barometer in which I used Thingspeak as an endpoint for the data. With the current buzz around the Internet of Things, a lot of similar services popped up : Plotly, the Wolframe data drop, Xively and even IBM Cloud to name a few. What I find problematic with theses services is that you loose control over your data. PLAYING AROUND WITH NEURAL NETWORKS AND R A basic neural network is composed of several layers of neurons : an input layer, one or more hidden layers and an output layer. Each layer of neurons receives its input from the previous layer or from the input layer. Each neuron is connected to all neurons in preceding andfollowing layer.
HOW TO TURN AN ARDUINO BASED PROOF OF CONCEPT INTO A FINALSEE MORE ONDIGITALJUNKY.IO
QUICK SATURDAY HACK
By sliding into the socket, the legs come in contact with connectors linked to two pads respectively on each side of the button’s base. 2. Prepare the wires. We need 3 wires: GND, VIN and DATA. The wires for GND and VIN should have a length approximately equal to the length of legs of the LED you just took out of the holder + a little margin MAKE AN ANTI PROCRASTINATION BOX I had a spare segment display and wondered about what I could make out of it. Hence was born the idea of the anti-procrastination box : for those of us who are a little too close to their smartphones but need to stay away from it from productivity reasons, put the phone in the box and set the interval during which the box ought to stay locked. THE HACK-O-LANTERN PROJECT ARDUINO – DIGITALJUNKY Make a connected barometer shield for Arduino Uno – using an ESP8266. September 5, 2015. May 27, 2017 alexis.matelin. 8 Comments. Prologue I’ve never really considered connecting my projects to WiFi since the price of the shields was so high. The HUZZAH from Adafruit will set you back $39.95. Sparkfun sells this shield for $84.95. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
PLAYING AROUND WITH NEURAL NETWORKS In my last post I said that I would try to replicate the code in Python. Well here it is. It is a first attempt, and unfortunately the predictive power of the network thus created is awful (it’s even worst than a random guess).PROGRAMMING
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. L3D CUBE VISUALIZATIONS PART 1: REAL-TIME SCATTER PLOT Overview. Basically a demonstration of the plotting capabilities of the cube. We will retrieve some data from a public thingspeak channel (they correspond to data points posted by a connected barometer installed in my living room).. The JSON returned by the Thingspeak API is parsed on processing and displayed on the cube. Each serie of data is represented by a 2 voxels thick scatter plot. L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE Overview. We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’sweather.
THE HACK-O-LANTERN PROJECT What we will be making. The idea is to make a jack-o-lantern controlled via twitter. Commands sent to a specific twitter account allow to change the color of the light inside the pumpkin or perform a pre-defined animation such as opening the pumpkin or playing a spookysound effect.
MAKE AN AUTOMATED TEA STEEPER- WITH ARDUINO Here’s how the circuit works : Potentiometer(RV1): it is a resistor of variable value.Depending on the position of the axis, the resistance fluctuates between 0 and infinity, thus 0->5v is fed to the analog pin A5 of the Arduino. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON class PlaygroundScreen(Screen): game_engine = ObjectProperty(None) def on_enter(self): # we screen comes into view, start the game self.game_engine.start() We might as well prepare the OptionsPopup class right now. We have to anyway otherwise the bindings we’re going to make in a few steps wont work properly. class OptionsPopup(Popup): pass. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON If you followed Part 1 of this tutorial, hopefully your development environment should be all set. We’re ready to get down to business (in France we would say : “mettre les mains dans le cambouis”. Because you can learn coding, and useless french idioms at the sametime!)
KIVY – DIGITALJUNKY Make a Snake game for Android written in Python – Part 3. February 5, 2015. May 27, 2017 alexis.matelin. 3 Comments. I hope you enjoyed the first two sections of the tutorial. If you got through it, rest assured that the hardest part is behind us. The game engine is at 90% done at that point, and handling screens is very straightforward inkivy.
VOLUMETRIC DISPLAY
The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. MAKE A SNAKE GAME FOR ANDROID WRITTEN IN PYTHON In the following tutorial, I will explain how to code and deploy a simple app on Android : the classic snake game that we all played on the famous and indestructible nokia 3210 (well, my version of it anyway). I personally code on Ubuntu 14.10 with Python 2.7,Skip to content
DIGITALJUNKY
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QUICK SATURDAY HACK – THE RGB LED PUSH-BUTTON __February 6, 2016June 12, 2017__alexis.matelin
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The context It’s been a long time since my last post and since it’s always difficult to get back at it I will start the year with an easy tutorial. I’m working on a design in which we have incorporated a big illuminated green push-button, the kind that you see on arcade machines. It is…Read More
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KNOW WHEN TO PEE WITH THE ATTINY! (BADUM TSS) __November 26, 2015November 27, 2015__alexis.matelin
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This project was born from a very common problem: our office’s floor is equipped with one bathroom that can’t be seen from every desk. Ensues unnecessary back and forth when someone walks to the bathroom only to find it occupied. The solution ? A simple bathroom monitoring system composed of two devices: An emitter placed…Read More
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MY FIRST HACKATHON AS A MENTOR: WHNYC 2015 __November 8, 2015May 27, 2017__alexis.matelin
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Truth be told, the first Hackathon I assisted to happened only a month ago in Montreal. It was my fist contact with such an event, and a great experience overall. It’s not often that you find yourself surround with 400 people that share a common interest about technologies and hacking as in making things work…Read More
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VOLUMETRIC DISPLAY AND DATA VISUALIZATION : 4 ANIMATIONS FOR THEL3DCUBE
__November 7, 2015May 27, 2017__alexis.matelin
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The L3DCube The cube falls into the category of volumetric displays, meaning that it can be used to represent 3 dimensional shapes. It is composed of 8*8*8 512 RGB LEDs, namely the very popular WS2812 that you can find in Adafruit’s neopixel product line. It is sold by a company called Looking glass factory. It…Read More
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L3D CUBE VISUALIZATIONS PART 1: REAL-TIME SCATTER PLOT WITH THINGSPEAK __November 7, 2015May 27, 2017__alexis.matelin
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Overview Basically a demonstration of the plotting capabilities of the cube. We will retrieve some data from a public thingspeak channel (they correspond to data points posted by a connected barometer installed in my living room). The JSON returned by the Thingspeak API is parsed on processing and displayed on the cube. Each serie of…Read More
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L3D CUBE VISUALIZATIONS PART 2: REAL-TIME WORLDWIDE WEATHER __November 7, 2015May 27, 2017__alexis.matelin
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Overview We will make use of the OpenWeatherMap API to retrieve the temperature from cities around the world and displays the result on the cube. The result is a “real-time” (actually the free API key only gives access to hourly updates) visualization of the earth’s weather. A Python script is used to select which cities…Read More
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L3D CUBE VISUALIZATIONS PART 3: WEBCAM STREAM PROJECTION __November 7, 2015May 27, 2017__alexis.matelin
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Overview The video stream’s frames are divided into 8×8 squares of equal surface. The average RGB values of every pixel in the square is extracted and used to recompose a smaller image. The image is then projected on to the cube. With enable3d option set to true, the past 7 frames are stored and displayed…Read More
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L3D CUBE VISUALIZATIONS PART 4: DEPTH AND COLOR PROJECTION WITH THEKINECT
__November 7, 2015May 27, 2017__alexis.matelin
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Overview The Kinect is a traditional camera doubled with an Infra Red Camera, enabling it to perceive depth in addition to the color information. Originally sold for Xbox, it is now available for PCs under the brand Kinect for Windows. Don’t let the name fool you, it will work just as well on OSX or…Read More
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MAKING-OF A HARDWARE PRODUCT: THE CLOISTER __October 28, 2015May 27, 2017__alexis.matelin
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Prologue A while ago I worked on a project that I called “The anti procrastination box“. The idea was to have a box inside which you could lock down your sources of distraction for a predefined amount of time (weather it be your favorite video game cd, your cellphone…). Shortly after I had published a…Read More
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THE HACK-O-LANTERN PROJECT __October 24, 2015May 27, 2017__alexis.matelin
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Prologue I recently got involved with an organization called Wearhacks. WearHacks is an international non-profit organization headquartered in Montreal, focused on the promotion of innovation and entrepreneurship in Wearable Technology and Internet of Things all over the world. They asked me to make a fun and seasonal project intended to be used at the Los…Read More __
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* Quick Saturday hack – the RGB LED push-button * Know when to pee with the ATtiny! (badum tss) * My first hackathon as a mentor: WHNYC 2015 * Volumetric display and data visualization : 4 animations for theL3DCube
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