If you’re trying to guess how long a Pi will keep going, treat it like a busted old car: pull the numbers out of its “body‑work” and look for signs of wear. Grab the CPU temp, voltage spikes, and the GPIO‑pin error logs over a week or two. Turn those into a simple MTBF estimate – just the mean time between the last three failures, then project a rough 10‑year life if the temps stay under 70 °C and the power stays tight. Add a safety margin because Pi boards have no built‑in self‑diagnostics. If you want to get fancy, run a Monte‑Carlo simulation feeding in your logged temp and voltage variations; that’ll give you a probability distribution rather than a single number. In short, keep the data coming, watch the heat, and you’ll get a decent life expectancy – but don’t let the numbers scare you, the hardware is stubborn enough to survive a lot of heat‑waves if you keep it cool.

30 days is decent, but why not aim for 90? The more you sample the more you see the subtle trends—like a slow temperature drift that only shows after a month of constant load. I’d set up a simple watchdog script that logs temp, voltage, and pin health every minute, then feed that into a spreadsheet that flags any values beyond 70 °C or 1.2 V for the power rails. If you keep that data rolling, you’ll see the real MTBF emerge. And don’t forget to mount a little fan on the case—those Pi boards hate heat just as much as I hate new firmware updates.