Taiss / 5Pcs KY-040 Rotary Encoder Module with 15×16.5 mm with Knobs Cap

I'm using them with WLED and they work flawlessly. I'm using the rotary encoder and four line display usermod that I customized and it's amazing now. Brightness adjustment with the knob, double click to change presets and long press to power off and on. Cut the side with the holes off to fit it in my car.

The breakout board makes them easy to use for prototyping. They are well made and work good.

Conforme a ce que j'ai commandé.

They work great, ... as long as the noise is filtered out. I needed to run the signal on wire over 45 feet. This destroyed any ability to simply read DT -- it was just bouncing all over. I tried putting in a 0.1uF cap and tried pull up resistors. Neither was able to filter out the noise. So I wrote some code that seems to be working great. This should run on Arduino and similar devices. Keep in mind that this approach does NOT use interrupts, so it is possible that turns could possibly be missed if your MCU gets busy on other things (though unlikely, unless you're running very long processes). uint16_t debounceDuration = 100; uint8_t clkVal = 0; uint8_t dtVal = 0; uint8_t dtValPrev = 0; uint32_t dtValLows = 0; uint32_t dtValHighs = 0; uint32_t millisR = 0; bool activePeriod = false; bool dir = false; uint8_t clkPin = A0; uint8_t. dkPin = A1; uint32_t currentMillis = 0; void setup() { pinMode(clkPin, INPUT_PULLUP); pinMode(dkPin, INPUT_PULLUP); } void loop() { currentMillis = millis(); clkVal = pinReadFast(clkPin); if (clkVal == LOW && !activePeriod && currentMillis - millisR > debounceDuration) { // happens one time once CLK goes low. millisR = currentMillis; activePeriod = true; dtValLows = 0; dtValHighs = 0; } if (activePeriod) { dtValPrev = dtVal; dtVal = pinReadFast(dkPin); if (currentMillis - millisR < 1) { if (dtVal == HIGH) dtValHighs++; else dtValLows++; } } if (currentMillis - millisR > debounceDuration && activePeriod) { // finished active period. fired once dir = (dtValHighs > dtValLows); activePeriod = false; Serial.print("dir: "); Serial.println(dir); } }

This took me awhile to get working properly because my Arduino code was incorrect. It needs 0.1uF capacitors from the CLK and DT outputs to GND, and I wish these were built in. It's missing a resistor on the switch part, which I'm not using. The parts I ordered have 15 PPR. Here is my Arduino code if this is helpful for anyone... const int i_A = 3; const int i_B = 2; int encoderPos = 0; bool encAValPrev = LOW; void setup() { Serial.begin(9600); pinMode(i_A, INPUT); pinMode(i_B, INPUT); } void loop() { bool encAVal = digitalRead(i_A); if ((encAValPrev == HIGH) && (encAVal == LOW)) { if (digitalRead(i_B) == LOW) { encoderPos--; Serial.println(String(encoderPos) + " Counter-Clockwise"); } else { encoderPos++; Serial.println(String(encoderPos) + " Clockwise"); } } encAValPrev = encAVal; }