240V solar lead acid LED head torch. (With schematic.)

Cheap imported "rainproof" power supply (long version).

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Fixing a faulty battery PIR light that was draining the batteries fast.

eBay's cheapest pile of crap USB rechargeable LED head torch.

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Gentle music, calms the nervous system and pleases the soul - healing music for the heart and blood

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12v 90Ah Lifepo4 battery build, For SUV car using 24cell 32140 15Ah From old car battery

Beginner's Guide to Soldering Electronics Part 1

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Inside a Japanese street light time switch.