Finally got 3 things from Aliexpress that I wanted to solder before switching the robot to lipo 4s
On the left is a discharge controller with a screen where you can show voltage and charge percentage and an estimated time if you set the battery parameters. When it hits the lower threshold the relay cuts off the circuit so you don’t over-discharge the battery. Not super useful for lipo though.
At the bottom is just an array of switches so you can power all nodes separately and turn some off if needed. There are already 4 now and soon there will be at least 8.
And on the right is an ADC so I can plug it into the circuit, read the voltage on the rpi and send it to a ros2 topic. So I can nicely show the battery level in the UI.
