Posted 22 March 2018

With the replacement of my Power Boost 1000C – based charger module with the TP5100, I needed to change the charging station supply voltage from +5V to +12V.   Unfortunately, the modulated IR beam signal is generated by a Teensy 3.2 module, which requires +5V (it’s actually a 3.3V module, but can accept power of up to +5V), so now I needed both +5 and +12V on the charging station.   The answer was to add a simple 3-pin regulator, as shown in the schematic below

Updated charging station schematic showing addition of a 3-pin 12-to-5V regulator

The original Teensy 3.2 side

The original 5V charging station layout, rear view

The new +12 to +5V regulator side

Updated charging station assembly, rear view