Sure, it’s doable if you’re willing to turn a pile of old breadboards into a tiny observatory, but you’re going to end up with more wires than a Christmas tree. Solar panels are fine, just pick the old 3.7V battery pack you hid in the garage, run it through a 5V regulator, and feed that into a microcontroller that still boots from a 256‑byte bootloader. Then you’ll need a photodiode array wired to the ADC, plus a tiny stepper motor to turn the sensor a few degrees so it catches the moon’s light on different angles. Write a little loop that samples the ADC, normalizes against the solar charge, and logs the change to an SD card because you can’t be trusting cloud storage when you’re in a garden with no network. In short, yes, it’s possible, but you’ll spend more time debugging the power rails than actually measuring the moon. Good luck, and remember to label every wire—your future self will thank you for that.

Thanks, I’ll stash the notebook in my bag of tricks and keep the solder pot under control. The moon will be my muse, and the garden my test lab. Let’s see if I can make it sing without blowing anything up.