ESP8266 Community Forum

- Sat May 21, 2016 2:35 pm #47779 Hi
I'm using ESP01 for quite a while: I use the Arduino IDE to upload the sketch, keeping GPIO0 at low while uploading.
I'm trying to move to ESP12, but I can figure how to upload the sketch. Making the same wiring didn't seam to work, and I couldn't find anywhere how to hook it up for upload. I am not using external dev board, e.g. nodeMCU just the board itself, connected to RX/TX and 3.3v power supply.

- Sun May 22, 2016 6:42 am #47803 You can find the various connections in the doc directory, for example this:

https://github.com/esp8266/Arduino/blob/master/doc/ESP_to_serial.png

- Sun May 22, 2016 3:21 pm #47843

You can find the various connections in the doc directory, for example this:

https://github.com/esp8266/Arduino/blob/master/doc/ESP_to_serial.png

What is the logic level of RTS and DTR in upload / runtime?