You could grab any Atmega328p or similar DIL on eBay for a couple of quid, maybe less in batches. I've got dozens of them in my electronics drawers I don't rea

You could grab any Atmega328p or similar DIL on eBay for a couple of quid, maybe less in batches. I've got dozens of them in my electronics drawers I don't really use anymore since ESP32 dev boards are so cheap and capable for home projects.