Finally, I completed version 1 of my scalp massager. It consists of 15 programmable 12mm vibration motors mounted on to a BraiNet Placement Cap.
The vibration motors are soldered and hot glued onto an Adafruit JST-PH 2-Pin SMT Right Angle Breakout Board which is then connected to a JST extension cable and hot glued onto the Brainet Cap.
The heart of the massager is an Adafruit Metro Mini Arduino processor. The JST extension cable is wired to a protoboard and wired to the Metro Mini. All the ground cables are soldered to the ground rail and the positive (red) wires are mounted to the output pins. I ended up wiring the motors to pins 2-13 and used pins A0-A2 as output pins for a total of 15. By avoiding pins 0 and 1, I’m able to program the Metro Mini without conflict.
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