ESP FTDI upload auto reset #2
Description
If we want to be able to upload via FTDI without having to manually put the ESP into bootloader mode this circuit can be used to achieve this using the chip-power down pin (CH_PD):
This works with all ESP's and 3.3V and 5V FTDI. The B5819W Schotkey diode is used to convert 5V > 3.3V, we don't needs this on the HP monitor since we have a dedicated 3.3V voltage regulator onboard.
Upload should ber set to use ck method rather than nodemcu. For referance nodmcu reset uses 2 transistors and 2 resistors coupled with an USB/Serial chip. Each transistor is connected to one pin of the USB serial converter. One for RTS the other for DTR as follow:
