Good point ESP_Sprite

So as a designer you can have test engineers test and vary the resistance until they achieve best results?

Yup.

This is typically done on new designs. In many of those 0 Ohm locations adding say a 200 ohm resistor on a data line will help reduce EMI. On power supply lines adding a valued resistor in those 0 Ohm places will act like a filter circuit to make the supply rail more clean from noise / spikes. SOooo...

You reset circuit is fine. Though there really is no need for C12. Using C18 is enough.
You probably do not need C5.
If I had to guess, I would look into your IC1 circuit. It might not be resetting properly and holding your EN or GPIO0 low when powered up.

Have you tried platformIO ?
ESP has a extension for it.
https://marketplace.visualstudio.com/it ... formio-ide

Maybe this might help.
https://docs.espressif.com/projects/esp ... with-esp32

you don't want to tie a gpio pin directly to EN. When you try to flash the device it wont be able to pull EN low, because your GPIO pin is pulling it high. It would be better to use a NPN or Fet. Have your gpio pin drive the NPN or Fet and then have the output connect to the EN line.

Sounds like you might want something like this that does it all for you.
https://www.sparkfun.com/products/18018

ESP_Sprite wrote: ↑

Mon Jul 19, 2021 9:33 am

...it says the same thing there?

I'm a moron. For some reason (stupidity) I read the post as " SP-IDF v4.0.3 is a bugfix update for ESP-IDF v4.3 "
Sorry for the waste of time. I tried to delete this embarrassing post, but since it was replied to I was unable to.

Not sure where you read that, but the text seems to have been cut off. Full text is on the Github release page : "ESP-IDF v4.0.3 is a bugfix update for ESP-IDF v4.0. ESP-IDF v4.3 is the latest stable release at time of writing." I read it from the news channel. https://www.esp32.com/viewtopic.php?f...