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It was indeed the ESP8266/ESP32 I had in mind. The ESP8266 is slightly over $1, but not much! (e.g. available here for $1.17 https://www.aliexpress.com/item/326
by nicoburns 5y ago
It was indeed the ESP8266/ESP32 I had in mind. The ESP8266 is slightly over $1, but not much! (e.g. available here for $1.17 https://www.aliexpress.com/item/32651747570.html https://www.aliexpress.com/item/32651747570.html)