Tokyo Devices TDPW6705-148
The TDPW6705 series is a small, highly efficient embedded charging board that is compatible with LFP(LiFePo4) and lead-acid batteries. It fully charges a 20Ah battery in about 3 hours. This is a 14.8V charging voltage type.
Tokyo Devices IWT1310-USB
The IWT1310-USB is a general purpose volume style input device. The position of the knob can be easily obtained using a numerical value from 0 to 255.