Measurement rig for radio restoration

For our own repair workshop we needed a better diagnostic aid for tube radios. Instead of reading every value by hand, the device continuously logs anode currents and heater voltages during the repair and stores the series per device. That saves time on recurring faults, we just compare the curve with the one from before the intervention. Hardware: a Raspberry Pi Pico for the sampling loop, a touch display for the operator and simple CSV export for the workshop file.