TiendoSolder tin three main circuits on each other, the circuits are linked together by the GND.
Solder tin electronic components onto the circuit.
where to led.
Jack DC with Button On / Off.
Video: Observe from four directions.
Solder the electronic components in the box (Upgrade version)
A project log for Bracelet for the blind
The solution is leveraging from the available stuff, affordable.
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