Search found 15 matches

by heikki.hietala
Tue Jan 23, 2024 6:47 am
Forum: Hardware
Topic: Fixing a boot loop issue
Replies: 6
Views: 3555

Re: Fixing a boot loop issue

Probably 50.
by heikki.hietala
Sat Feb 05, 2022 7:49 am
Forum: ESP-IDF
Topic: Using WPA2 Enterprise with Python?
Replies: 6
Views: 9096

Re: Using WPA2 Enterprise with Python?

Sorry no, I had to direct my efforts to other projects. I should try this now.
by heikki.hietala
Tue Apr 20, 2021 4:40 am
Forum: Hardware
Topic: Fixing a boot loop issue
Replies: 6
Views: 3555

Re: Fixing a boot loop issue

That's what I was afraid of. Oh well, they served well, but my students probably fiddled with the wirings while it was connected.

Or maybe I did.

Thank you for confirming that they cannot be resurrected.
by heikki.hietala
Mon Apr 19, 2021 6:13 pm
Forum: Hardware
Topic: Fixing a boot loop issue
Replies: 6
Views: 3555

Re: Fixing a boot loop issue

Yes, they are all DevKitC chips, but they have functioned perfectly well in both Arduino and MicroPython settings. I just started to test my stock, and found these four that fail.

So, all in all, is there a way to get them going again?
by heikki.hietala
Mon Apr 19, 2021 9:36 am
Forum: Hardware
Topic: Fixing a boot loop issue
Replies: 6
Views: 3555

Fixing a boot loop issue

Hi all, I have a lot of ESP32s due to the courses I give at a University of Applied Sciences. However, 4 of them behave rather bad. They do accept upload, but then enter a boot loop with this output: rst:0x3 (SW_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,...
by heikki.hietala
Sun Dec 13, 2020 6:36 pm
Forum: Hardware
Topic: Running two ultrasound detections independently on one ESP32
Replies: 3
Views: 2992

Re: Running two ultrasound detections independently on one ESP32

This looks very promising indeed, many thanks for your reply! The two sets of ultrasound sensors are in two separate doorways in a back to back layout. I will look into the example code in the morning. I figured out a backup plan of using two Arduinos to handle the measurements, and passing their da...
by heikki.hietala
Sun Dec 13, 2020 10:16 am
Forum: Hardware
Topic: Running two ultrasound detections independently on one ESP32
Replies: 3
Views: 2992

Running two ultrasound detections independently on one ESP32

Hi all, I have a question on using two HC-SR04s independently. Our University has two doors and we want to count people going in and out. Doing one door is rather easy with two HC-SR04s sensing distance change and checking the millis when this occurred, and that is no problem to decipher which direc...
by heikki.hietala
Mon Feb 04, 2019 1:16 pm
Forum: Hardware
Topic: Unable to flash, even if I see the device as COM8
Replies: 4
Views: 5747

Re: Unable to flash, even if I see the device as COM8

Yes, it does go away when I pull the USB out. I don't have a UART coupler, so it priobably remains for me to discard the circuit. Thank you for helping my troubleshooting.
by heikki.hietala
Mon Feb 04, 2019 1:08 pm
Forum: Hardware
Topic: Unable to flash, even if I see the device as COM8
Replies: 4
Views: 5747

Re: Unable to flash, even if I see the device as COM8

Thanks for this - when I try this, all I get is the PuTTY showing a blank screen with the cursor at the top left. No combination of the buttons seems to do anything.
by heikki.hietala
Mon Feb 04, 2019 11:50 am
Forum: Hardware
Topic: Unable to flash, even if I see the device as COM8
Replies: 4
Views: 5747

Unable to flash, even if I see the device as COM8

Hello, I have a ESP32 WROOM and it worked fine for a while. Now I am unable to make connection with it, but I still see it as CPOM8. I tried this: PS E:\Dropbox\ZEsp32> python -m esptool --port COM8 erase_flash esptool.py v2.5.0 Serial port COM8 Connecting........_____....._____....._____....._____....