GP_PSU_00.zip

Design by: 21869

A power supply unit based on the TI LM2575 voltage regulator. An ATtiny 85 is used to monitor the power supply's input voltage, output voltage and temperature. The ATtiny 85 can output the status on a bit banged 1-WIRE connection. (5v serial could be used if desired).

Locations for input and output poly fuses are provided. A power LED and a status LED managed by the ATtiny 85 is also available.

The board also hosts a connection to a micro USB connector to permit uploading of code via a USB using Micronucleus (https://github.com/micronucleus/micronucleus).

PCB size is 50 by 32 mm