Touch Sensor Problems

Q&A Forum › Category: ESP32 › Touch Sensor Problems

Barry Davis asked 6 years ago

Following the instructions in the manual, I get the these results:

GPIO 4, 15, 13, 12, 14, 27: all OK;

GPIO 0, 2: Serial Monitor reads 1 and LED is on continuously; and the really strange one:

GPIO 33: when 33 is entered as touchPin in the sketch, nothing happens; HOWEVER, the Serial Monitor and LED respond normally when 32 is touched.

GPIO 32: when 32 is entered as touchPin in the sketch, nothing happens; HOWEVER, the Serial Monitor and LED respond normally when 33 is touched.

Programming with Arduino IDE 1.8.7. Problems occur with two HILETGO boards and one Geekreit. Any ideas?

Thanks in advance … Barry.

2 Answers

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Rui Santos Staff answered 6 years ago

Hello Barry!
You’re correct. I’ve never noticed that problem, but I get the exact same behavior with my DO IT ESP32 board. That’s probably a low-level bad pin assigning more the touch sensors (32 is swapped with 33)..

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Barry Davis answered 6 years ago

Thank you, Rui; I appreciate your kind attention … Barry.