@espboards: One button press. 47 interrupts fired. Most beginners never know this is happening 👇 When you press a button, the metal contacts physically bounce - on, off, on, off - dozens of times before settling. Every bounce = one interrupt = your code counting garbage. Fix: check if 10ms passed since the last press. If not, ignore it. That's it. #ESP32 #maker #programming #microcontroller #hardware

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Saturday 14 March 2026 16:25:03 GMT

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Comments

LordKortix :

wouldn't adding a pullup resistor negate this debounce?

2026-03-14 17:40:59

Afflikted too :

Just add a 20-40 millisecond delay after the first button detect.

2026-03-23 19:42:18

Dev Anddy :

😂 just solved a problem in my prototype

2026-03-15 22:22:14

Psatire :

what about capacitor?

2026-03-16 16:31:27

zlobinanton :

well not 47 times, but yes, maybe 5 times

2026-03-15 04:30:04

Juaninbombin :

Add a lowpass filter at the mcu gpio for more reliability

2026-03-15 11:36:54

Marcel Castilho929 :

pcnt

2026-04-30 03:07:14

Patrik :

not like the quantum

2026-03-14 16:50:13

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