Marc's Public Blog - Arduino Hacking

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Table of Content for arduino:

2024/06/29: Putting 27 P5 64x32 Azerone Panels To Good Use, a Big 288x192 Matrix (single page)
2024/06/27: Testing Azerone P5 vs P4 vs P2 RGBPanels to Display My 128x192 Outfit Matrix (single page)
2023/08/29: 2023 Burning Man Illuminaughty LED Meetup (single page)
2023/06/16: Party LED Outfit Version 6: Self Contained Power System on LED Panels (single page)
2023/05/17: Party LED Outfit Version 5.5: Flexible P15 LED Strings, LED Fanny Pack, Rez Inspired LED Goggles, LED Laces and LED Shoes (single page)
2023/04/07: Managing a chicken coop door and checking water level with RC Plane Servo and ESP8266 (single page)
2022/03/22: Putting some P5 64x32 Azerone Panels To Good Use, a Big 128x192 Matrix (single page)
2022/01/09: LED Pants and Shirt v5 on ESP32 and Raspberry Pi with P2 RGBPanels and Wifi (single page)
2022/01/02: FastLED_ArduinoGFX::TFT on top of Framebuffer::GFX for SPI TFTs like SSD1331 or ILI9341 (single page)
2021/01/23: Hacking 2 LCA/Linux.conf.au SAO Badges, Micropython and Double SPI Quad Screen C++ One (single page)
2021/01/23: Linux.conf.au 2021 LED Talk (single page)
2020/12/16: Seeed Studio Arduino Sensor Kit Base (single page)
2020/03/16: Framebuffer::GFX, Choosing between its 3 2D APIs: FastLED XY(), NeoMatrix, and LEDMatrix, and detail of its many supported hardware backends (single page)
2020/03/13: RGB Panels, from 192x80, to 384x192, to 384x256 and maybe not much beyond (single page)
2020/01/24: Running Arduino code with 2D FastLED, Adafruit::GFX, and LEDMatrix displays on Linux (single page)
2020/01/14: LCA 2020 Talk, ESP32 Memory Management, Neopixels and RGBPanels (single page)
2020/01/14: Linux.conf.au Open Hardware Miniconf 2020: Dingo Car with Tensorflow Video Analysis v2 (single page)
2020/01/01: Running FastLED, Adafruit::GFX, and LEDMatrix code on High Resolution RGBPanels with a Raspberry Pi (single page)
2019/05/26: FastLED_SPITFT::GFX on top of Framebuffer::GFX for SPI TFTs like SSD1331 or ILI9341 (single page)
2019/04/27: Comparing FastLED::NeoMatrix and SmartMatrix::GFX with PixelMatrix Aurora and Table ME Demos (single page)
2019/04/08: Clubbing, EDM Festival and Burning Man LED Pants and Shirt v4 on ESP32 with RGBPanels and SmartMatrix::GFX (single page)
2019/04/01: SmartMatrix, SmartMatrix Shield v4 for Teensy, ESP32 shield with level shifter, and SmartMatrix::GFX (single page)
2019/03/30: Using FatFS FFat on ESP32 Flash With Arduino (single page)
2019/01/24: Linux.conf.au 2019: Using Open Hardware from my shirt to OS testing for Google's Fuchsia (single page)
2019/01/21: Donkey Car with Tensorflow Video Analysis at Open Hardware Miniconf at Linux.Conf.au 2019 (single page)
2018/07/30: Building a 64x64 Neopixel Neomatrix (4096 pixels) running NeoMatrix-FastLED-IR (single page)
2018/07/13: AnimatedGIFs for SmartMatrix or NeoMatrix (Neopixel/WS2812B) from SDcard or SPIFFS, on Teensy 3.x, ESP8266, or ESP32 (single page)
2018/05/29: EDM Party Shirt powered with FastLED::NeoMatrix and Adafruit::GFX, plus 160Wh (10Ah/4S) worth of lipos (single page)
2018/04/23: FastLED::NeoMatrix library: how to do Matrices with FastLED and Adafruit::GFX (single page)
2018/01/22: Lolibot, FPGA Primer, MicroPython for ESP8266/ESP32 and Protocol Analysis at Open Hardware Miniconf at Linux.Conf.au 2018 (single page)
2017/06/02: LED Pants and Shirt Programmed With Arduino on ESP8266 (single page)
2017/04/24: Adafruit GFX on NeoMatrix and RGB Matrix Panel Demo (single page)
2017/04/16: IoTuz Driver ported to Expressif ESP32 WROVER board (single page)
2017/04/03: Arduino 328P Uno Teensy3.1 ESP8266 ESP32 IR and Neopixels (single page)
2017/01/16: IoTuz Driver for our ESP32 board built at Open Hardware Miniconf at Linux.Conf.au 2017 (single page)
2016/02/01: ESPlant, Arduino Miniconf at Linux.Conf.AU 2016 (single page)
2015/01/06: Driver for direct driving single to 3 color LED Matrices with software PWM (single page)
2013/09/14: Arduino Training and Hacking at Google (single page)
2012/01/24: Much Improved Pebble v2 Aiko Demo Code (single page)
2012/01/23: LiquidCrystal driver support LCD3Wire hardware (pebble and others) (single page)
2011/12/12: GCC-AVR-4.5.3-2 Breaks Arduino NewSoftSerial (single page)
2011/05/12: Putting my Mobsendat Board to work to review my Rematee Bumper Belts (single page)
2011/05/11: Reducing Xbee Power Consumption on my Mobsendat Board (single page)
2011/05/06: PC/Breadboard Xbee Adapters: Sparkfun and Adafruit (single page)
2011/01/20: Mobsendat Arduino board from Arduino Miniconf 2011 (single page)
2011/01/19: Pebble Shield from Arduino Miniconf 2010 (single page)

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2011/01/20 Mobsendat Arduino board from Arduino Miniconf 2011

π 2011-01-20 01:01 in Arduino

After the last linux.conf.au, and my going to the arduino miniconf, I got (voluntarily I guess :) conned into learning about a new field: arduino. The learning curve was a bit steep since I started with the second miniconf which featured a pretty sweet board, the mobsendat one of the volunteers had just designed.
Mobsendat (mobile sensor data) offers pretty good IO that's useful to log to its built in sdcard: a DS18B20 1-wire temp sensor, a barometer (with 2nd temperature reading), a 3 axis accelerometer, and connectivity for a GPS, a 433Mhz radio chip, and a Zigbee chip, all this for barely over $100. It was designed to be put in rocket bodies to record the flights, but I figured I'd find other uses for it :)

I got to solder the whole thing during the miniconf:

all done

Putting aside some problems due to a short in my board that came from a pre-soldered chip (not my fault :) ), it worked great. I was even able to hack in a dirty mod to let me unplug the GPS when I don't need it

Programming with arduino was reasonably easy. I haven't done much work on that specific board yet, but I have on the other one (next post).

See more images for Mobsendat Arduino board from Arduino Miniconf 2011

2011/01/19 Pebble Shield from Arduino Miniconf 2010

π 2011-01-19 01:01 in Arduino

I missed the arduino miniconf in 2010, but I was able to buy the pebble shield from a former participant, along with an arduino mega board. This board was a bit better for me to first learn on than the mobsendat because it had more interactive I/O to play with (potentiometer, LDR, LEDs, LCD display, and more).

This gave me a chance to learn the Aiko framework from Andy Gelme, which allows for registering event handlers that get called at a specified interval. I ended up writing some handlers that were missing, like a button handler that calculates which combination of buttons is pressed from the combined resistance generated by the 3 buttons. I used this to tell the board at what frequency to flash an led based on potentiometer or LDR light input.

slightly improved version with LEDs connected to the relays

I have a video showing this live:

This was a good way to learn how to play with arduino and learn programming, as well as being a test platform for the Zigbee chips I bought. I'll get a chance to do some more serious work on my mobsendat after that.

See more images for Pebble Shield from Arduino Miniconf 2010

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