Control crankshaft through virtual keyboard (xdotool)

[3deeee]

Hello guys,

I'm trying to control crankshaft through can bus signals from my radio which should be converted into virtual keyboard key presses.

For testing purposes I made a nodejs script which uses xdotool to press the enter button.

Unfortunately xdotool is not able to press a button:

pi@CRANKSHAFT-NG:~ $ node keypress.js
Fehler beim Ausführen des Befehls: Command failed: xdotool key Return
Error: Can't open display: (null)
Failed creating new xdo instance

My USB Keyboard works just fine so it's an issue with xdotool and it's capability to control crankshaft-ng.
I'm using the latest image (2022-09-11-crankshaft-ng-66525ef.img) on my Raspberry Pi 3 Model B V.1.2.

Do you have any suggestions how to solve or which virtual keyboard to use?

Thanks!

Content of my keypress.js script:

const { exec } = require('child_process');

setInterval(() => {
  // Emuliere die "Enter"-Taste mit xdotool
  exec('xdotool key Return', (error, stdout, stderr) => {
    if (error) {
      console.error(`Fehler beim Ausführen des Befehls: ${error.message}`);
      return;
    }
    if (stderr) {
      console.error(`Fehlerausgabe des Befehls: ${stderr}`);
      return;
    }

    // Gib eine Nachricht in der Konsole aus
    console.log('Enter-Taste gedrückt.');
  });
}, 3000);

[Luka9200]

Probably waaay too late but mcp2515/2518 can bus module + 32u4 arduino is the simplest way to do that bc that ardunio is capable of emulating a keyboard. Personally I've done it with resistive buttons (have an older car)

[Luka9200]

For volume you'll need to connect to rpi gpio pins with tranzistors