A dual microcontroller board for controlling "Neopixel" LEDs, with one micro dedicated to driving the LEDs while the other micro is busy reading push buttons, polling rotary encoders, reading IR remote signals etc etc.
The microcontrollers -two atmega328s -communicate with one another over their I2C bus. The very short wire run negates the need for the usual pull up resistors on the bus.
Time based control for drip irrigation system, with 16x2 LCD (HD44780) for status and configuration.
I designed the board single sided for easy etching at home.
Originaly created using Eagle, and then imported to EasyEDA.
The Water Organ is a capacitive Midi Controller.
There are 24 inputs to which you can connect cups of water or other capacitive stuff like fruits or vegetables and touch them with your hands in order to make music.
The circuit uses two MPR121 breakout boards in order to make individual capacitive buttons. The button states will be sent over a Midi output. A Midi input can be used to control a neo...