Hi folks!

Today I show you my Scania 4-Series Opticruise working in ETS2. In fact, it will work on any Simulator due to the use of an Arduino Leonardo which Windows will recognize as a HID device (keyboard). I programmed Shift up to "Right Shift" and shift down to "Right CTRL" which are the ETS2 default keys for shifting gear!

Have fun!

Arduino Leonardo Code:

#include "Keyboard.h"

#define SHIFTUP_PIN   2
#define SHIFTDOWN_PIN   3

// Works on the Leonardo board 
// Build by Jeroen van der Velden
// https://hackaday.io/project/8448-real-scania-truck-home-simulator

static void ShiftUp(void)
{
    Keyboard.press(KEY_RIGHT_SHIFT);
}

static void ShiftDown(void)
{
    Keyboard.press(KEY_RIGHT_CTRL);
}

void setup(void)
{
    Keyboard.begin();

    // Set pin to input
    pinMode(SHIFTUP_PIN, INPUT);
    // Enable pullup resistor
    digitalWrite(SHIFTUP_PIN, HIGH);

    // Set pin to input
    pinMode(SHIFTDOWN_PIN, INPUT);
    // Enable pullup resistor
    digitalWrite(SHIFTDOWN_PIN, HIGH);
}

void loop(void)
{
    static uint8_t shiftUpStateLast = 0;
    static uint8_t shiftDownStateLast = 0;
    uint8_t shiftState;

    shiftState = digitalRead(SHIFTUP_PIN);
    if (shiftState != shiftUpStateLast) {
        shiftUpStateLast = shiftState;

        if (shiftState == 0) {
            ShiftUp();
            delay(100);
            Keyboard.releaseAll();
        }
    }

    shiftState = digitalRead(SHIFTDOWN_PIN);
    if (shiftState != shiftDownStateLast) {
        shiftDownStateLast = shiftState;

        if (shiftState == 0) {
            ShiftDown();
            delay(100);
            Keyboard.releaseAll();
        }
    }

    delay(50);
}