Hello
Just a simple post to list the topics I created with question and answer! gathered in the first post
► giant (4") common anode 7-segments: TPIC6C595 driver wiring and code
http://forum.arduino.cc/index.php?topic=264333.0
► How to read ON-OFF-ON switch on a single analog pin
wiring diagram and code
http://forum.arduino.cc/index.php?topic=488734.0
► WS2812 how to display independent patterns on a single strip
to display independent patterns on one single strip
http://forum.arduino.cc/index.php?topic=534822.0
► How to get ultrasonic PWM on pin D9 and D10 (> 20kHz)
to drive two DC motors without buzzing sound
the code from Coding badly and a video demonstrating that the ultrasonic PWM eliminates the buzzing sound of the driven DCmotor!
http://forum.arduino.cc/index.php?topic=135847.msg1706807#msg1706807
yours
Mat