Hello. I need a way to increment or decrement a counter using hardware. I have initially thought of using 2 buttons - very simple and old method ( one for incrementing and one for decrementing). I have recently found out abut the ESP32 pins that are able to detect a change in electrical charge. I have tested it and they actually work! When I touch it with my finger, the value goes LOW
I have connected a jumper cable to gpio 4 and I am touching it with my fingers, the output:
My question is how reliable are they to use for production replacing the good old buttons. Are they sensitive to temperature/humidity changes? Once I press the button on my ESP32, it enter a function untill I select what number I want to set counter to. This counter variable is very important to me since it controls "ID" of the remote device therefore I do not want the capacitive sensor to activate for no reason when i dont need it because it will enter a function when i dont need it!.
Does anyone have experience with those touch sensors and could advice me?
Code:
void setup() {
Serial.begin(115200);
delay(1000); // give me time to bring up serial monitor
Serial.println("ESP32 Touch Test");
}
void loop() {
Serial.println(touchRead(4)); // get value of Touch 0 pin = GPIO 4
delay(1000);
}
My question is how reliable are they to use for production replacing the good old buttons. Are they sensitive to temperature/humidity changes? Once I press the button on my ESP32, it enter a function untill I select what number I want to set counter to. This counter variable is very important to me since it controls "ID" of the remote device therefore I do not want the capacitive sensor to activate for no reason when i dont need it because it will enter a function when i dont need it!.
Does anyone have experience with those touch sensors and could advice me?