Simple temperature controlled fan regulator

Some time ago I pulled out temperature fan controller from one of old ATX PSU. With 12.2V input it provides 4.5V at 25°C and raises output voltage till 11.8V at ~70°C. After changing Q2 to higher voltage transistor and tuning of R4-R5 this divider this controller should be suitable for 12V fans with 24/36/48V input. […]

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One and a half port charger on TP5100 module

WARNING: Lithium batteries can be extremely dangerous when handled unproperly and lead to fire hazard. Information provided as is, you can use it on your own risk. Before last holidays I bought cheap Chinese action camera, which came without separate charging station. Camera’s battery could be charged only in camera, charging batteries via which have […]

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