Resistors for flash mode

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Re: Resistors for flash mode

By eriksl
- Tue Jan 05, 2021 4:49 am #90077 Never pull any GPIO to either low or high without using a resistor. During the boot process almost all GPIO are temporarily an output for various signals. If you pull them hard down or up, you can damage the output circuitry.
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Re: Resistors for flash mode

By John Karij
- Wed Mar 17, 2021 5:22 am #90858 I built a pcb adapter for flashing ESP-12 using CH340G to connect with USB. It connects with ESP-12 using pogo pins.
You could get a bare pcb from here if you want to test it. You need to cut the pcb using a cutting disc to separate the two boards.
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