Review on π DC-DC Buck Converter Module: 12V to 5V Micro USB Power Adapter for Ring Alarm Keypad (2) by Sebastian Erik
Doesn't work for me.
Purchased for ring keyboard. My old keyboard's power supply should be converted to a USB charging port; Bower, the USB connector is too square to fit in a keyboard. So it doesn't work. I'm sure it converts energy, but don't use it for a ring keyboard.
- Free for educational use
- Vulgarity
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