Search found 4 matches

by mattpellegrini
Sun Jan 10, 2021 3:42 pm
Forum: ESP32 Arduino
Topic: External wakeup pin detect issue
Replies: 12
Views: 15088

Re: External wakeup pin detect issue

Finally, https://www.allaboutcircuits.com/technical-articles/switch-bounce-how-to-deal-with-it/ gave some clear examples on hardware debouncing using just a capacitor and led to my solution. With a 104 100nF capacitor as shown on the link above, I was able to correctly determine the wake pin from th...
by mattpellegrini
Sun Jan 10, 2021 9:36 am
Forum: ESP32 Arduino
Topic: External wakeup pin detect issue
Replies: 12
Views: 15088

Re: External wakeup pin detect issue

https://circuitdigest.com/electronic-circuits/what-is-switch-bouncing-and-how-to-prevent-it-using-debounce-circuit this was also good and suggests hardware solutions to bouncing. I may try to find such components to try it out. Unfortunately I'm just a software developer, so don't have an oscillosco...
by mattpellegrini
Sat Jan 09, 2021 4:57 pm
Forum: ESP32 Arduino
Topic: External wakeup pin detect issue
Replies: 12
Views: 15088

Re: External wakeup pin detect issue

Had to read up on debouce, but it doesn't seem so complicated. https://www.arduino.cc/en/Tutorial/BuiltInExamples/Debounce explains it well. I guess the theory here is that the larger button causes spurious open/close transitions when pressed, for a longer period compared to the smaller button, so a...
by mattpellegrini
Fri Jan 08, 2021 6:45 pm
Forum: ESP32 Arduino
Topic: External wakeup pin detect issue
Replies: 12
Views: 15088

Re: External wakeup pin detect issue

I have hit this exact issue. It took me a while to find a thread on the subject, albeit an old one. I'm wondering if someone can explain a little more. @Rudy12 suggests there may in insufficient voltage or current, which sounds plausible, but the esp32 does wake with both buttons. However, esp_sleep...