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How to make a turntable for 360 photography or 3D object scanning – Part 4 : Electronic component

1/ Schematic :

I use A4988 to control the step motor with the following schematic

The camera controlled by two Opto PC817 that connected to two I/O pins in the following schematic

Download the PCB design (esp8266turntable.brd) from here

2/ Parts :

Buy all from here

  • 1 x NodeMCU
  • 1 x mini DC-DC step down
  • 1 x A4988 step driver
  • 1 x PCB mount socket DC
  • 2 x female pin header
  • 1 x Domino 4-pin
  • 1 x 3.5mm female jack
  • 1 x jumper male pin header
  • 2 x Opto PC817
  • Power DC 12v 2A
  • Dây kích camera

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