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[PCB Prototype] I want to order the Solar Bottle Cap, does a battery come with it? If not, can you suggest a battery that would work with it and I will buy it too...

  • answered Jun 03,2022
    by Alex U
4answers

[Others] Do anyone know how to make this amplifier run on battery

This amp run on 12-24v ac。
  • answered Aug 06,2020
    by Joson
2answers

[Others] Raspberry Pi Power Circuit Advice Needed

Looking for advice on improving this circuit. I use a 3S Li-Ion battery into a buck converter to power a Raspi trail camera with an on/off switch and led indicator.I use a largish resistor because I l...
  • answered Jul 31,2020
    by Gorge
1answers

[Others] What this module used for?

Can anyone tell what pcb is this?
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