How to use linear encoders with Arduino. hardware, code, and demo. скачать в хорошем качестве

How to use linear encoders with Arduino. hardware, code, and demo.

How to salvage linear encoders form a broken (or out of ink) printer and use them with an Arduino to make precise motions measurements. Hardware, theory, software walkthrough, and demo. I also discuss some of the pitfalls of interrupt code. The code: // Interrupt information // 0 on pin 2 // 1 on pin 3 #define encoderI 2 #define encoderQ 4 // Only use one interrupt in this example volatile int count; void setup() { Serial.begin(115200); count=0; pinMode(encoderI, INPUT); pinMode(encoderQ, INPUT); attachInterrupt(0, handleEncoder, CHANGE); } void loop() { Serial.println(count); delay(10); } void handleEncoder() { if(digitalRead(encoderI) == digitalRead(encoderQ)) { count++; } else { count--; } }