Search found 7 matches

by jb-mtd
Tue May 31, 2022 3:05 pm
Forum: Hardware
Topic: Boot problem with ESP32-WROOM-32E-N8
Replies: 11
Views: 4691

Re: Boot problem with ESP32-WROOM-32E-N8

Hello,

I have used a new module and with it it works. Thanks for the support - we can close the ticket now.

Have a good time, Jürgen
by jb-mtd
Mon May 30, 2022 8:15 am
Forum: Hardware
Topic: Boot problem with ESP32-WROOM-32E-N8
Replies: 11
Views: 4691

Re: Boot problem with ESP32-WROOM-32E-N8

Hello, OK I have connected the RC network (10k, 0.1µ) to EN. Do I have to connect more ports? Please can you give me an answer on this. I now get the following messages when programming: -------------------------- Compilation complete. esptool.py v3.0-dev Serial port COM6 Connecting..... Chip is ESP...
by jb-mtd
Sun May 29, 2022 5:39 pm
Forum: Hardware
Topic: Boot problem with ESP32-WROOM-32E-N8
Replies: 11
Views: 4691

Re: Boot problem with ESP32-WROOM-32E-N8

Hello,
enclosed is some more information about the current setup:
- I have only one GND contact connected
- pin IO12 is not connected, like all other IOs

Best Regards, Jürgen
by jb-mtd
Sun May 29, 2022 2:49 pm
Forum: Hardware
Topic: Boot problem with ESP32-WROOM-32E-N8
Replies: 11
Views: 4691

Re: Boot problem with ESP32-WROOM-32E-N8

Hello, have connected a lab power supply as voltage source - unfortunately there was no change. I am still grateful for any hints. Again my question: do I have to connect other pins than the 6 lines or should it work like this? When booting, the pinout looks like this: - 3.3 V (stable voltage, check...
by jb-mtd
Sat May 28, 2022 7:38 pm
Forum: Hardware
Topic: Boot problem with ESP32-WROOM-32E-N8
Replies: 11
Views: 4691

Re: Boot problem with ESP32-WROOM-32E-N8

Hello,
I have installed a capacitor with 10µF at the 3.3V power supply - unfortunately without the behavior has changed. For me it would be important to know if I have to control or connect other than the used IO ports. If not, I can ignore it for further troubleshooting.
Thanks a lot, Jürgen
by jb-mtd
Sat May 28, 2022 8:21 am
Forum: Hardware
Topic: Boot problem with ESP32-WROOM-32E-N8
Replies: 11
Views: 4691

Re: Boot problem with ESP32-WROOM-32E-N8

The power supply comes from the USB programming unit. Only the power supply for the ESP is needed - no external control. With the Oszi I could not detect a voltage drop.

Do I have to control / assign other pins or are the 6 contacts enough for the ESP to run cleanly?

Thanks for more ideas and hints!
by jb-mtd
Fri May 27, 2022 4:18 pm
Forum: Hardware
Topic: Boot problem with ESP32-WROOM-32E-N8
Replies: 11
Views: 4691

Boot problem with ESP32-WROOM-32E-N8

Hello, I have a problem booting from ESP32 (ESP32-WROOM-32E-N8). The ESP is only connected to the most necessary pins. So with: - 3.3 V (stable voltage, checked with Oszi) - GND - EN is connected to 3.3V for flashing - IO0 is connected to GND for flashing - RX for flashing - TX for flashing The flas...