Search found 7 matches
- Tue Jun 06, 2023 6:12 am
- Forum: ESP-IDF
- Topic: internet unavailable when connected to AP(Wi-Fi) of ESP32 DevKit,
- Replies: 18
- Views: 23036
Re: internet unavailable when connected to AP(Wi-Fi) of ESP32 DevKit,
Hey, Has anyone every succeeded in having both mobile/cellular internet connectivity + ESP32 in AP mode (without Internet) on Android devices? Looks like the following make it so I can at least access the ESP32, but mobile connectivity is not working anymore: uint8_t opt_val = 0; // don't supply a d...
- Tue Mar 29, 2022 5:10 am
- Forum: Hardware
- Topic: Noise when interacting with i2c
- Replies: 6
- Views: 4292
Re: Noise when interacting with i2c
You are right, one of the ground cable was guilty for this, replaced it and it's ok now
Thank you
Thank you
- Mon Mar 28, 2022 6:29 am
- Forum: Hardware
- Topic: Noise when interacting with i2c
- Replies: 6
- Views: 4292
Re: Noise when interacting with i2c
It's A 2N3907 being driven high-side: https://www.eevblog.com/forum/beginners ... e-voltage/
- Sun Mar 27, 2022 9:36 pm
- Forum: Hardware
- Topic: Noise when interacting with i2c
- Replies: 6
- Views: 4292
Re: Noise when interacting with i2c
No one noticed this before?
- Fri Mar 25, 2022 1:55 pm
- Forum: Hardware
- Topic: Noise when interacting with i2c
- Replies: 6
- Views: 4292
Noise when interacting with i2c
Hello everyone, I know this is super light, but before digging too much into it, I wanted to check if there's something obvious and known about ESP32 and i2c. Got a GPIO (17) on an ESP32 wroom that is set to PWM 50% duty and here's what I see with the scope: SDS00034.png Now when there's an interact...
- Mon Mar 14, 2022 10:01 am
- Forum: General Discussion
- Topic: esp32 interrupt firing occasionally on it's own
- Replies: 6
- Views: 8617
Re: esp32 interrupt firing occasionally on it's own
Just had that very same issue, trying to investigate with a scope but either it's really random or as soon as I plug the scope it doesn't happen anymore
Edit: there we go!
Edit: there we go!
- Thu Aug 27, 2020 11:34 am
- Forum: Hardware
- Topic: How to measure a battery.
- Replies: 3
- Views: 6772
Re: How to measure a battery.
Jenya, To stabilize voltage, you may also want to add a capacitor and a resistor "just in case of": https://github.com/esp8266/Arduino/issues/2070#issuecomment-222891420 I've done so yesterday evening to mesure a backup battery for my home automation device (to ensure it doesn't go below 12V, otherw...