Started building Hexacopter.
Simple light switch.
Battery powered microphone amplifier.
Home made cheap any easy magnetic stirrer.
This project is only described how it's done with list of costs.
Very easy and cheap PCB Lamination process.
Simple model of crossroad with traffic lights.
Simple indicator of accumulator in what condition he is.
Build up your own very small Li-ion Charger for lightning.
We always look for tank to etch, here is dedicated one!
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