Development and Analysis of Coin Based Water Dispenser System

I also have a problem in making push buttons work after a coin slot is inserted I also assume that the 9v water pump works like an LED as it

Slot : Set to 20c Singapore New Coin, Adjustable - Solenoid Valve: Brand: Burkert, Germany Model: A280, 15mm Working pressure: bar

coin slot game The Piso Water Vending Machine is a Vendo business model coined from atm machines for dispensing cold drinking water at PHP one peso coin

coin slot belly button how to calibrate the coin slot of water vendo machine