Tired of running to the store every time your batteries die? Same here—until I found a simple DIY hack that transformed my remotes into rechargeable gadgets. It’s affordable, eco-friendly, and genuinely satisfying to build.
The battery problem: Ever settled in to watch a movie, only for the remote to stop working? Between TVs, fans, and toys, batteries disappear fast—and quietly drain your budget.
The fix? Make your remote rechargeable.
You’ll need:
A small rechargeable battery (like a 3.7V 14500)
A USB charging module (TP4056)
A diode (e.g., 1N4007)
A bit of patience
Just solder the battery wires where the originals were, install a USB port on the back, and voilà—no more swapping batteries.
Feeling advanced? Add Bluetooth with an ESP32 and reprogram the board.
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