The plot thickens with MAX31865

Sun, 11 May 2025 00:00:00 +0000

My max31865 story is still ongoing. I managed to find a PT100 sensor to pair with my accidentally obtained boards. It worked in testing, but once I hooked up to the power supply I was using for my solar interface board all along, it doesn’t work! It complains about “over/under voltage” and can’t calculate the resistance. I thought it’s because the power supply is weak, so I added a 6300uf capacitor to the 5v line. It didn’t help. I still haven’t figured out what is happening, in the meantime I just powered it from USB-C 5v PSU. At least I have some temperature measurements; also, there’s apparently a PT1000 variant of the breakout somewhere in the mail, destined for my postbox. We’ll see if that one will be twitchy too.

On a completely unrelated note I find it increasingly hard to do anything useful nowadays. I don’t know if that’s some new form of burnout, but I’m trying to find an interesting project to do and can’t. Everything is no fun. I should try what always helps - making a list of things to do.

Pt100 on Think before you push the button

The plot thickens with MAX31865