Users - KevCarrico - SparkFun Electronics

Tutorial - GPS Shield Assembly Guide about 5 years ago

what’s the little piece of adhesive foam for?

is it the “double-sided sticky tape” that you refer to for mounting the module to the board?

Product ROB-12607 about 5 years ago

ahh… you’re getting this stuff from servo city?

Product ROB-12607 about 5 years ago

might you please explain, or sell separately, the “potentiometer/feedback” shaft as seen here and in your videos?

thank you!

Product COM-10932 about 5 years ago

lol - that looked a lot better when I pasted it!!!

Product COM-10932 about 5 years ago

as opposed to the example above, here’s some code that will get this working right-away in true quadrature fashion. [model #E6A2-CW3C]

sorry if it is wrong to post this here, but it’s free to the world, have spark-fun!

// code start

[put pound sign here!]include "digitalWriteFast.h" // google this and install it

const byte pin_A =  2; // connect white wire here
const byte pin_B =  3; // connect black wire here
int A_set =         0;
int B_set =         0;
long pulses =       0;


void setup()
{
  pinMode(pin_A, INPUT);
  digitalWrite(pin_A, HIGH); // enables pull-up resistor
  pinMode(pin_B, INPUT);
  digitalWrite(pin_B, HIGH); // enables pull-up resistor  

  A_set = digitalRead(pin_A);
  B_set = digitalRead(pin_B);

  attachInterrupt(0, encoderPinChange_A, CHANGE); // pin 2
  attachInterrupt(1, encoderPinChange_B, CHANGE); // pin 3

  Serial.begin(115200);  
}


void loop()
{
  Serial.println(pulses);
}


void encoderPinChange_A()
{
  A_set = digitalReadFast2(pin_A) == HIGH;
  pulses += (A_set != B_set) ? +1 : -1;
}


void encoderPinChange_B()
{
  B_set = digitalReadFast2(pin_B) == HIGH;
  pulses += (A_set == B_set) ? +1 : -1;
}

Product SEN-09299 about 6 years ago

I’ve had great success in narrowing the gap on these simply by gluing a piece of tubing on the LED side, the transistor side… or both.