Also check this excellent article about accuracy of the ESP32 ADC
https://w4krl.com/esp32-analog-to-digit ... -accuracy/
Search found 5 matches
- Sun Aug 28, 2022 10:02 am
- Forum: ESP32 boards
- Topic: ESP32 analogRead attenuation and accuracy
- Replies: 7
- Views: 26056
- Fri Oct 09, 2020 10:29 am
- Forum: ESP32 boards
- Topic: Count 0.5Hz pulses on GPIO in DeepSleep - esp_wake_deep_sleep stub
- Replies: 1
- Views: 1298
Count 0.5Hz pulses on GPIO in DeepSleep - esp_wake_deep_sleep stub
Hi, How should I count the pulses from a clock "Bell Strikes" when in DeepSleep ? From espressif documentation we can use esp_wake_deep_sleep to run a function stored in RTC memory at very early boot stage, and possibly go back to DeepSleep before full boot. This is called "Deep Sleep Wake Stubs" or...
- Thu Oct 01, 2020 4:23 pm
- Forum: ESP32 boards
- Topic: ESP32, deepsleep and slow pulse counter
- Replies: 0
- Views: 1468
ESP32, deepsleep and slow pulse counter
Hi, Gong is a french word, can be translated as "bell strikes" from a clock. I'm trying to get an efficient way to count the gongs from a mechanical clock, to figure out the clock time, stop it for about 12h, and restart it on time with ntptime syncrhonization. HW is TTGO T-Display ESP32. As it will...
- Mon Aug 27, 2018 11:34 am
- Forum: ESP8266 boards
- Topic: Sonoff S20 does not boot when powered on AC
- Replies: 4
- Views: 2981
Re: Sonoff S20 does not boot when powered on AC
Thanks Peter, In my case, I cannot talk about stability since it only works when connected via USB. Since I have the "Manufacturer: 5e", I need the "-fm dout" option to the "write_flash" command as you described here: https://forum.micropython.org/viewtopic.php?t=3777 For now I think I have no other...
- Fri Aug 10, 2018 9:10 pm
- Forum: ESP8266 boards
- Topic: Sonoff S20 does not boot when powered on AC
- Replies: 4
- Views: 2981
Sonoff S20 does not boot when powered on AC
Hi, I have a strange behaviour. The Sonoff S20 works properly when powered with the USB Serial adapter with 3.3V adapter. But when I plug it to the AC, nothing happens. It's like the boot.py and/or main.py are blocked. Could it be because of the Serial adapter is disconnected ? (P.S.: I never risked...