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KY-040 Module:
Working voltage: 5V
Pulse circle: 20
Material: electronic components + PCB
Size: 26 x 19 x 29mm/1.02 x 0.75 x 1.14inch
Diameter of the thread: 7mm/0.27inch
Height of the thread: 7mm/0.27inch
Knob Cap:
Diameter: 15mm/0.59inch
Height: 16.5mm/0.65inch
Connection:
"GND”: ground terminal
"+”: 5V power supply
"SW”: 'Select' switch (activated when shaft pressed on top)
"DT”: Encoder Pin B
"CLK”: Encoder Pin A
Designed with detent and push button switch feature, comes with nuts and washers, suitable for Arduino micro controller use. By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer counter, which species rotation counts are not limited. How it works: incremental encoder is a displacement of the rotary pulse signal is converted to a series of digital rotary sensors.
Package Content:
8 pack KY-040 rotary encoder module(knob, nut, washer included)
Christopher Getsfred
2025-08-25 20:49:09
I used these along with a Raspberry Pi Pico W to create a button panel for sim racing. I use three rotary encoders to control brake bias and front/back anti roll bar. Works like a charm.
Bobby
2025-08-22 10:07:36
Great encoders, these have the two resistors on the back side, I’ve had previous encoders that only had a single resistor and they gave me issues with my menu system. These seem to solve the problem for my spot welder. Great product
Kathleen Taylor
2025-08-21 11:34:08
These are actually quadrature encoders. They function well; however, none of the documentation matches the labeling on the device. With a little trial and error you can hook them up and they work great. No switch bounce that is normally found in mechanical encoders. They are very inexpensive.
Bob
2025-08-05 09:01:54
Works great with Arduino!
Shane
2025-06-17 18:00:54
As yet untested but appear to be of good quality. Quick delivery with great packaging.
Rob
2025-06-14 12:37:44
exactly as expected and works as initended
Taylor
2025-06-05 10:36:13
Documentation for this is not with the product but it's easy to find online. works well. No issues with speed.
Bill P.
2025-04-15 10:13:00
One click is registered as two. Maybe I'm using it wrong or have the wrong idea of how a rotary encoder should work but I had to account for that in the software I'm writing that reads the value of the encoder.The knobs look good and match the knobs of the potentiometers I have. They're easy to wire up and there are quite a few Python modules for reading the values.
allen jacques
2025-02-14 14:52:50
I am building a robot lawn mower and use these as position sensors with arduino. work great!
Beaky
2025-02-02 13:14:34
Hmm. This product could use a deep socket nut so it could be built into 3/8" front panel hole. Am improvising. It will work with an embedded microcontroller and act as a coarse sweep switch on an oscilloscope where the micro generates the sweep waveforms. It is elegant !
Juan Jose Vanegas
2025-01-10 19:33:55
The encoder caps were extremely scratched up. Also not a single piece of foam, everything is just loose.
Peter Frier
2024-12-29 17:09:06
Quick delivery, good price, and work okay. These encoders have pull up resistors built in to pcb.
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