Parameters: (rs, enable, d4, d5, d6, d7) Servo servo1, servo2, servo3, servo4 // DS04-NFC motors // Stepper motors pins # define dirPinVertical 0 # define stepPinVertical 1 # define dirPinHorizontal 2 # define stepPinHorizontal 3 # define coinDetector 9 # define button1 13 # define button2 12 # define button3 11 # define button4 10 # define microSwitchV 15 # define microSwitchH 14 int buttonPressed * DIY Vending Machine - Arduino based Mechatronics Projectīy Dejan Nedelkovski, */ # include // includes the LiquidCrystal Library # include LiquidCrystal lcd ( 27, 26, 25, 24, 23, 22) // Creates an LC object. Below this there is a description of the code. What’s left now is to program the Arduino and here’s the code that I made for this project. At the end I attached two LED light strips on the door panel to illuminate in inner of the vending machine.

It became a little messy with that much wires but everything worked properly.

I connected the electronics components using some jump wires. As an Amazon Associate I earn from qualifying purchases. Arduino Board ………………………………………… Amazon / Banggood / AliExpressĭisclosure: These are affiliate links.

360 Degree Continuous Servo Motor … Amazon / Banggood / AliExpress.

You can get the components needed for this Arduino Tutorial from the links below: The four buttons and the two micro switches are connected to Ground and the Arduino digital pins, so using the internal pull up resistors of the Arduino board we can easily detect when they are pressed. The DS04-NFC continuous rotation servo motors are powered with 5V and controlled via PWM signals coming from the Arduino board, while the stepper motors are controlled via the A4988 drivers. However, for all other components we need 5V so therefore I used a buck convertor to step down the 12V to 5V. We need the 12V for the two stepper motors, as well as the LED strip lights which I will later attach on the front door. So we need 12V power supply, with at least 2 amps.

Build your own vending machine kit