Nice, but the toaster oven is kind of scary.
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Bill, One of the many projects that is waiting bench space/time is an Arduino controlled reflow oven. I just need to decide whether to try to make the controller internal or external to the oven
in a similar form factor there are the ESP32 and ESP8266. Both are compatible with the Arduino IDE and have much more program memory and ram. The ESP32 is a dual core 240 Mhz processor. They also have built in WiFi, and the ESP32 has Bluetooth
Here’s a link to show a quick conversion of an inexpensive toaster oven from Wal-Mart into a Arduino controlled reflow oven. https://www.youtube.com/watch?v=rZyP5G4Wfm0