But this ESP8266 smartwatch created by [Shyam Ravi ... It even seems to be a fairly reasonable size (with the potential to be even smaller). All that with a total build cost of less than $20 ...
The question is what should you compare this to; is it more an ESP32 or an ESP8266? The new “C3” variant has a single 160 MHz RISC-V core that out-performs the ESP8266, and at the same time ...