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Board #285

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aronvandervalk opened this issue Jan 13, 2022 · 5 comments
Closed

Board #285

aronvandervalk opened this issue Jan 13, 2022 · 5 comments

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@aronvandervalk
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aronvandervalk commented Jan 13, 2022 •
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Hi!

I'm trying to get my Pi fired up with the node-pixel library, together with I2C backpack.
I installed the packages and try to run this simple code:

var five = require("johnny-five");
var pixel = require("node-pixel");

var opts = {};
opts.port = process.argv[2] || "";

console.dir(process.argv[2]);

var board = new five.Board(opts);
var strip = null;

var fps = 20; // how many frames per second do you want to try?

board.on("ready", function() {
    console.log("Board ready, lets add light");
});

But I keep getting the result after running this code:
1642108712270 Board Looking for connected device
1642108720067 Board No connected device found

It seems it cannot find "node" as the board?

Also, when I try to log process.argv[2] I get an undefined, as it does not exists.
@ajfisher
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ajfisher commented Jan 13, 2022 via email

@aronvandervalk
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Thanks for your answer! After installing the packages I tried running the code:

var five = require("johnny-five");
var Raspi = require("raspi-io").RaspiIO;
var board = new five.Board({
  io: new Raspi()
});

board.on("ready", function() {

    console.log("Board ready, lets add light");
});

Which keeps running into this error. Even after rebooting.

pi@raspberrypi:~/node-pixel-test $ node index.js
internal/fs/utils.js:269
    throw err;
    ^

Error: EACCES: permission denied, open '/sys/class/leds/led0/trigger'
    at Object.openSync (fs.js:462:3)
    at Object.writeFileSync (fs.js:1384:35)
    at new LED (/home/pi/node-pixel-test/node_modules/raspi-led/dist/index.js:37:18)
    at Object.createLED (/home/pi/node-pixel-test/node_modules/raspi-led/dist/index.js:62:16)
    at new LEDManager (/home/pi/node-pixel-test/node_modules/j5-io/dist/managers/led.js:32:30)
    at new J5IO (/home/pi/node-pixel-test/node_modules/j5-io/dist/index.js:116:32)
    at new RaspiIO (/home/pi/node-pixel-test/node_modules/raspi-io/dist/index.js:122:12)
    at Object.<anonymous> (/home/pi/node-pixel-test/index.js:5:7)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10) {
  errno: -13,
  syscall: 'open',
  code: 'EACCES',
  path: '/sys/class/leds/led0/trigger'
}

Do you have an idea what could cause this?

@ajfisher
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ajfisher commented Jan 14, 2022 via email

@aronvandervalk
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Thanks for your answer. The sudo node index.js did the trick!

Thanks for helping me out! I appreciate it very, very much. Now I can start tinkering with your library and implementing some light installation ideas. Nice :-)

@ajfisher
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ajfisher commented Jan 15, 2022 via email

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@ajfisher @aronvandervalk