Control of a relay module using an Arduino Nano v3
Since I have to reset my work hardware or switch the voltage several times a day from home office, I built a small circuit from an old Arduino Nano v3 and a relay module that enables me to do this. Since I found it awkward to start the relay every time via the Arduino IDE with the serial monitor, I also wrote a GUI that can be executed using JAVA JDK for easy handling.
Hardware required
- Arduino Nano v3
- Relais Modul
- RGB LED (not needed)
- Single Wires
- Solder stuff
- 3D Printed case (not needed)
Schematics
Code
Code for Arduino IDE which worked with the attached GUI.
#define LEDR 8 // red
#define LEDG 9 // green
#define LEDB 10 // blue
#define RELAIS 11 // relais
void setup() {
// set LED's pin to output mode
pinMode(LEDR, OUTPUT);
pinMode(LEDG, OUTPUT);
pinMode(LEDB, OUTPUT);
pinMode(RELAIS, OUTPUT);
Serial.begin(9600); //start serial communication @9600 bps
}
void loop(){
if(Serial.available()){ //id data is available to read
char val = Serial.read();
if(val == 'b'){ //if b received
digitalWrite(11, HIGH); //turn on relais
digitalWrite(10, HIGH); //turn on green led
}
if(val == 'f'){ //if f received
digitalWrite(11, LOW); //turn off all led
digitalWrite(10, LOW);
}
}
}Processing IDE GUI for MacOS
With Processing IDE it is easy to create a JAVA GUI for Arduino which is running on MAC OS X and Windows. The only think what you have to install additional is the latest JAVA SDK.
3D Printer Settings
Print Settings
- Printer brand: Creality
- Printer: Ender 3 Pro
- Infill:100
- Filament brand: Amazon Basics 3D-Drucker-Filament
- Filament color: black
- Filament material: PLA
Result
