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A decent buck DC-DC converter that can be used to charge your lithium polymer batteries
it supports AT command control over serial and works with 3
Support ISO14443 Type A and Type B protocols
A compact Feather-format ATmega32u4 board with built-in microSD storage and LiPo charging for portable logging projects
Potentiometer 6Pin Shaft WH148 Amplifier Dual Stereo 20K seeed A decent buck DC-DC converterThis potentiometer is a two in one: it's a log taper 20K ohm potentiometer, with a grippy shaft and it comes with an on off switch. It's smooth and easy to turn, but not so loose that it will shift on its own. We like this one because the legs are 0. 2" apart with pin points, so you can plug it into a perf board. Note the spacing on the switch pot pins is 0. 2" so it won't work in a solderless breadboard as nicely unless you bend the switch pins out
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