ESP8266 Community Forum

- Mon Mar 09, 2015 7:25 am #11650 Hi,

I've buy two esp-07 from ebay. They are from "ai-thinker" according to the metal shield and have 16 pins (there is another board with 14 pins).
Using NodeMCU, I found that GPIO4 and GPIO5 are inverted. Pin 1 is for GPIO 4, pin 2 for GPIO 5.
It's not firmware problem, pin map is correct, so I think it's just label on board that is wrong. Metal shield prevent from checking wires.

Actual label (bottom view):

Code: Select allTX  || REST
RX  || ADC
G4  || CH_PD
G5  || G16
G0  || G14
G2  || G12
G15 || G13
GND || VCC

should be:

Code: Select allTX  || RST
RX  || ADC
G5  || CH_PD
G4  || G16
G0  || G14
G2  || G12
G15 || G13
GND || VCC

(sorry if bad english, I'm french)

- Wed Mar 11, 2015 9:12 am #11793 In old version of ESP-07, GPIO4 and GPIO5 's bottom silk have mistake. The true GPIO4 is GPIO5, and true GPIO5 is GPIO4.

- Wed Mar 11, 2015 5:00 pm #11827 Also, i don't if your modules are like mine, but mine read "REST" instead of "RESET"