Do you have a lot of useless PC power supplies around you? Don't throw away the unused PC power supply. Coat it with bread crumbs and fry it until golden brown. The kids next door will cry! This module draws out all the voltages of the ATX power supply, +12V, +5V, +3.3V, -12V (the current new generation of power supplies has canceled -5V, so there is no), which is enough to meet all the power needs of daily IDY!
2020.4.28 Change: A double-layer USB interface has been added to the PCB, which can directly power 5V devices.
PCB diagram:
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