var RC = function (arduino, pin) { if(!arduino){throw new Error('Arduino must be set');} this.arduino = arduino; this.pin = pin; } RC.prototype.send = function(tristate) { var str = ''; for(i = 0; i < s.length; i+=2) { str += String.fromCharCode(parseInt(tristate.substr(i,2), 16)); } arduino.write(new Buffer('W' + String.fromCharCode(97 + this.pin) + str,'ascii')); }; RC.prototype.sendDecimal = function (len, val) { len = this.arduino.valueToFirstTwo(len); val = this.arduino.valueToLastFour(val); arduino.write(new Buffer('W' + String.fromCharCode(97 + this.pin) + len + val,'ascii')); };