Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By Sprite_tm
#23975 From what I know, the ESP works down to a very low voltage: the specsheet says 1.8V but I seem to remember that unofficially it can go even lower. The problem is in the SPI flash: that usually has a minimum voltage that's 2.2V or so. If you can find & whack an 1.8V-capable flash onto our module, the entire thing should work OK at that voltage.