That explains why I initially thought the ESP PROG should have returned the EN pin to logic high. Still it works with the cap on GPIO0. I have to wonder why there are empty footprints for the RC network for EN and GPIO0. For EN the functionality is obvious, but why then for GPIO0? I don't have an is...

I got it working. It was the missing RC network on EN. Its a really messy hack to make it work. But I was expecting another rev anyway. BTW the cap on GPIO0 is okay. The ESP-PROG has one. I see the flash is running in DIO mode but I programmed it in QIO mode. Should I change the running mode to QIO ...

Well the external pullup shouldn't hurt. I put it by default on my design and I can flash fine, but I'm having problems because the flashed program won't run for very long. I've posted that in another thread. Waiting for it ot be approved.

I've created a custom PCB with a ESP32-WROOM-32E-N16 module. I can program the module using the ESP-PROG adapter, but the program either doesn't run or crashes after a short while Its a simple hello world in a loop program written using Arduino. I'm using the same settings (default) except flash siz...

So I accidentally found out what the problem is. I also have a header connected to Serial0 for a TTL serial adapter. I programmed a loopback on Serial0 and it works using the onboard serial connection BUT NOT the TTL serial adapter. I can send data out from the ESP32 (ie TXD0 works) but the RXD0 doe...

I am not able to program the ESP32 with the ESP-PROG using the Arduino IDE. I can program the board using the built-in serial port on the dev kit. So its probable the settings other than com port do not need to be changed. If I connect the ESP-PROG to the dev kit, open the programming serial port, a...