ESP8266 Community Forum

- Wed Feb 22, 2017 9:00 pm #62906 Hi All

Has anyways done any WiFi strength testing with this new module over any of the previous ESP-12x modules?

- Wed Mar 22, 2017 9:47 am #64093 Has anyone successfully loaded custom firmware to the esp-12s? Im having a lot of trouble.

- Sat Mar 17, 2018 7:42 am #74659

Has anyone successfully loaded custom firmware to the esp-12s? Im having a lot of trouble.

i'm wondering about that, if GPIO-0 is pulled high by the new pullup resistors, how to you get the board into bootloader mode?

- Sat Mar 17, 2018 7:58 am #74661

if GPIO-0 is pulled high by the new pullup resistors, how to you get the board into bootloader mode?

The same way as always, force the input low by connecting it to ground. The ESP-12S is functionally the same as the other ESP12 module. It has a larger capacitor across the supply (one of the best changes) and it has pull up resistors added on the pins that require it. With other modules these would have to be added externally.

The input resistors are about 10K. I think I measured 12K when I first got some.