Easter egg painter helping hand

thingiverse

Human: Turns the egg. Simple as that. printed parts M5 threaded rod and 8x M5 nuts M3x50 bolt and 1x M3 nut for egg holder 2x M3 nut and 2x M3x5 bolt a spring for the egg holder "idler" 28BYJ-48 stepper Arduino ULN2003 driver, easily found on eBay Uses code from http://forum.arduino.cc/index.php?topic=85335.0 to drive the stepper at a constant (slow) speed. The original code works perfectly, all you need to do is modify the main loop(). void loop() { motorSpeed = 1; // set a constant slow speed clockwise(); // start clockwise rotation } Connect the signal and power wires from the ULN2003 driver board as follows to the Arduino Uno: IN1 to Arduino pin 8 IN2 to Arduino pin 9 IN3 to Arduino pin 10 IN4 to Arduino pin 11 5V+ to Arduino Uno 5V 5V- to Arduino Uno GND It also works on a Micro or Nano, but you'll need an external 5V power supply for the stepper. Happy painting :).