WayinTop 5 stuks Roterende Encoder Module KY-040 360 Graden Rotary Encoder met Drukknop

tres bon produit

Devo dire che mi sono trovato molto bene con questi componenti. Usati per un progetto di home cockpit non ho avuto nessun tipo di problema.

These rotors work really well for what I need. I had previously been using a rotary encoder I got from Sparkfun which worked, but it didn't have detents like these do. With the rotor in a detent, the rotor "CLK" and "DT" pins are disconnected from ground, so they get pulled to +5v just like "SW" when the button is not pressed. Spinning clockwise by one detent will pull CLK to GND first, then DT to GND, release CLK, then release DT. Counter-clockwise is obviously the reverse: DT low, CLK low, DT high, CLK high.Note that the image shows "5v supply", but all that's connected to is the 3 10k pull-up resistors that are connected to the two rotor contacts and the pushbutton. You could use any voltage you want to, or even swap 5v and ground so the pull-ups become pull-downs and the outputs are active high, or just leave it disconnected if you have external pull-ups.The pushbutton requires a bit more pressure than the other rotor, but it's hard to quantify.I connected all 5 to rotors (15 outputs in total) to a pair of PCF8574 GPIO expanders (with 8 GPIOS each). I connected the "CLK" pin of each to the first expander, and the "DT" pin to the second, then the INT line on both expanders to two GPIOs on the Raspberry Pi which are configured to interrupt on the falling edge - that way, even if there is a delay in reading the I2C bus, it still knows which way the rotor turned.The knobs appear to be anodized aluminum. I brushed the tops of the knobs and painted them with acrylic paint, then coated them with clear nail polish, and they look pretty good :)

What else do you want... Works as per spec... Good for me!

They work but I'm getting very jumpy readings on all 5 that I have tried so far. Not impressed. Had to revert back to potentiometers to control my servos.UPDATE: After much digging around the forums I found that when connected to an Arduino Nano and used with an interrupt service routine (ISR) function these encoders work quite well. They do have a tendency to "stall" the code if they get hung up halfway between two ticks but it's a rare and minor issue. Decent encoder for the price. I've upgraded my rating from 2 to 5 stars.