BlinkStick 8th blue LED not working (only pulse/morph, nodejs)

gabriel.annell · January 24, 2021, 10:55pm

OK so I found the problem,

arvydas/blinkstick-node/blob/master/blinkstick.js#L611


* @param {Number} count How many LEDs should return
* @param {Function} callback Callback to which to pass the color values.
* @return {Array} Callback returns an array of LED data in the following format: [g0, r0, b0, g1, r1, b1...]
*/
BlinkStick.prototype.getColors = function (count, callback) {
   params = _determineReportId(count * 3);


   this.getFeatureReport(params.reportId, params.maxLeds * 3 + 2, function (err, buffer) {
       if (callback) {
           if (typeof(buffer) !== 'undefined') {
               buffer = buffer.slice(2, buffer.length -1);
           }


           callback(err, buffer);
       }
   });
};

At that line, there is an off-by one error that somehow messes up. Since I don’t know the gritty details, I can’t tell what is going on but removing the “-1” in the buffer.slice parameters fixed my problem