Arduino Pneumatic Cylinder Project

Simple blink sketch, powerful action. Learn how to control a pneumatic actuator using an Arduino, relay, and solenoid valve. This project uses minimal code and real hardware to make something awesome.

📐 Project Diagram

Notes:

• There is a 24V power supply going to the relay.
• The Arduino is powered by 5V–9V adapter.
• All grounds are connected to a rail (together).

🧰 Parts List

• Arduino Uno (or compatible)
• Relay Module (5V)
• 24V Solenoid Valve
• Air Compressor Tank
• Spring-return Pneumatic Cylinder
• 24V Power Supply (for solenoid)
• USB or 5V Power Supply (for Arduino)

💡 Code (Blink Sketch using pin 8)

void setup() {
  pinMode(8, OUTPUT); // Relay control pin
}

void loop() {
  digitalWrite(8, HIGH); // Extend cylinder
  delay(1000);
  digitalWrite(8, LOW);  // Retract (spring)
  delay(1000);
}

🔍 How It Works

The Arduino runs a basic blink sketch to toggle the relay connected to a 24V solenoid valve. When the relay is HIGH, the valve opens and allows air from the compressor to extend the pneumatic cylinder. When the relay is LOW, the spring-loaded cylinder retracts automatically.

📘 You might like my two port solenoid valve