Hi, im building a cigar vendo however when im about to insert a coin and it makes contact on the surface of coin acceptor cover, it's giving a false pulse. It does it when Im not touching the actual vending cointainer, but when im touching the container itself it works fine. It fixes the issue if …

What's wrong with the grounding wire? Where is that wire in the picture? Give the servo an extternal power supply. Controllers are designed to supply power.

Seems like we already went through this with your other topic for this coin acceptor. [image] Why do I keep on frying my uno board? General Guidance with the same code and diagram, what is the probable cause of unwanted pulse like this video below?

Unfortunately it comes and go. Maybe when i thought it was working already. I was holding the container while inserting the coins

[image] bingbongfx: m using a ground bus for common ground, What do you mean by "bus" I thought you soldered everything together but you still show a solderless breadboard.

#include <Servo.h> #include <Arduino.h> #include <EEPROM.h> #include <LiquidCrystal_I2C.h> Servo brand0Servo; const int brand0ButtonPin = 4; const int coinPin = 2; const int ledPin = 6; // Red LED const int insufficientLedPin = 7; // Green LED const int irSensorPin = 8; const int buzzerPin = 10;…

[image] bingbongfx: It fixes the issue if i attach a grounding wire, I dont want to keep the grounding wire just to make it work. Sounds like it may be a static electricity problem. I suggest you keep the ground wire connected. The ground wire provides a path for the static electricity so tha…

IINM, it seems like the cover is floating, which can of course create mishaps like that. did you check that the cover is grounded from the accepter ground?

all modules are in the common ground, If I add extra wire from ground to earth, it works fine, without it, it gives false pulse.

Coin Acceptor false pulse

Projects General Guidance

jim-p February 8, 2025, 9:12am 3

Seems like we already went through this with your other topic for this coin acceptor.

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Coin Acceptor false pulse

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