| Projects, Designs, and Technical Stuff |
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| Funny Magnetostatics problem |
| Best mechanism for generating test patterns on 110 GPIO lines? |
| Hall sensor to detect metallic objects. |
| Simple battery meter in raspi project |
| DG303BDY Dual SPDT analog switch |
| DIY DC-DC LED (remote) drivers |
| Cheapest way to detect 0°C (+/-5°C) to limit lipo charge current when <0°C |
| Split rail Power supply using coupled inductor |
| 0-20mA / 0-10V voltage and current source |
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