This is my new, upgraded, I2C controllable buck-boost converter based on the TPS55289. You can control it's output voltage with any arduino, any esp32, stm32 etc...any MCU.

INPUT VOLTAGE: 3V-30V

OUTPUT VOLTAGE (no load): 0.9V-21.4V in 10mV steps OR

OUTPUT VOLTAGE (no load): 0.9V-10V in 5mV steps

Dimensions using BOM A (WxLxH): 36.3x55.6x14.6 mm, 1.43x2.19x0.57 in

Dimensions using BOM B (WxLxH): 36.3x55.6x16.4 mm, 1.43x2.19x0.65 in

Additions/changes made:

Added M2 mounting holes

Added Shunt resistor to enable CC and CDC (Cable Drop Compensation)

Added frequency smd "DIP" switch to let user select between 200Khz, 400Khz, 600Khz and 800Khz

I2C resistors are now embedded into the PCB

Labels are now clearer, added input voltage range label

There are 4 BOMs you can choose after download.

BOM A_5m uses Asian capacitors and 5m shunt

Bom A_10m uses Asian capacitors and 10m shunt

BOM B_5m uses American capacitors and 5m shunt

Bom B_10m uses American capacitors and 10m shunt

Using Asian brands you should reduce lead time and cost

Using a 5m shunt let's you adjust the CC mode in 100mA steps

Using a 10m shunt let's you adjust the CC mode in 50mA steps

Order instruction: 4 layer, 4mil track spacing, 0.25mm+ min hole size

A video will be uploaded on the YT channel in those days