====== lamaPLC : Arduino wiring ======

===== HI active switch connection =====

{{ :arduino:push_button.png |HI active switch connection}}

The image above shows a HI active switch connection. In the open, resting state of the circuit, the Arduino is connected to ground through a 10 kΩ (pull-down) resistor, so it is in the LO state. By pressing the button, the power supply is connected to it (it is recommended to connect a 100Ω resistor) to the input, so it goes into the HI state.

{{ :arduino:button.png |HI active switch connection}} 

===== Mosfet driver =====

This Power Mosfet driver use two MOSFETs in parallel and can handle currents up to 15A - 400W (25A with cooling).
This module is perfect for driving DC motors, DC pumps and using a PWM signal the speed can be controlled.

  * Supply Voltage: 5V .. 36V
  * Max current: 15A
  * Working temperature:-40 .. 85℃
  * PWM: 0 .. 20 kHz 

{{ :arduino:two-mos.png?350 |Mosfet driver}}

==== Example code ====
<code c>
// Arduino Power Mosfet Driver with Two Parallel MOSFETs
 
#include <Arduino.h>
 
// Pins
const int pwmPin = 9;  // PWM signal to the gate driver IC
 
void setup() {
  // Set up pins
  pinMode(pwmPin, OUTPUT);
}
 
void loop() {
  // Adjust the duty cycle to control the power output
  int dutyCycle = map(analogRead(A0), 0, 1023, 0, 255);
 
  // Write the duty cycle to the PWM pin
  analogWrite(pwmPin, dutyCycle);
 
  // Optional: Add a delay to control the update rate
  delay(20);
}
</code>