The image says there are two ground and no power. Which is the real ground and which should I use for 5v/vin? I'm assuming the other pins are correct.

This version is just the switch - with no attached logic. So its only job is to connect the various signals to ground (or not). Of course, since it is just a switch there's nothing stopping you from using vcc instead, but ground would be normal for something like an Arduino, which provides pull-up resistors.

Is this a linear or logarithmic potentiometer?

These are not potentiometers. They are rotary encoders. If you need potentiometers, search Amazon for "potentiometers".

5 Set 360 Degree Rotary Encoder Code Switch Push Button EC11 Digital Potentiometer with Switch 5 Pin Handle Length 20mm and Knob Cap for Arduino Electronics Projects

5 Set 360 Degree Rotary Encoder Code Switch Push Button EC11 Digital Potentiometer with Switch 5 Pin Handle Length 20mm and Knob Cap for Arduino Electronics Projects

Product ID: 388674603

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Details

Brand
WayinTop
Contact type
Momentary
Current rating
0.5 Amps
Operating voltage
5 Volts
Operation mode
Off Push

🔄360° infinite rotation

🔘Built-in push button switch

⚙️20 pulse digital Gray code

Description

🔄 Elevate your DIY projects with infinite precision and smart control!

INTEGRATED PUSH BUTTON - One-click functionality to select, reset, or activate commands effortlessly.
SEAMLESS 360 CONTROL - Infinite rotation for ultra-precise adjustments and smooth navigation.
PLUG PLAY VERSATILITY - Perfectly compatible with Arduino, PIC, ATMEL, and modern electronics projects.
DIGITAL GRAY CODE OUTPUT - Reliable 20-pulse encoding ensures accurate data input every time.
ROBUST BUILD FOR LONGEVITY - Rated for 50,000+ rotations and 20,000+ switch cycles—engineered to last.

This 5-pack of EC11 rotary encoder switches features 360-degree continuous rotation with 20 digital pulses and an integrated push button. Designed for microcontroller projects, each encoder offers a 6mm diameter shaft with 20mm length, delivering reliable, long-lasting performance with over 50,000 rotation cycles and 20,000 switch activations. Ideal for precise volume control, menu navigation, and data input in Arduino and embedded systems.

Specifications

ASIN	B08728K3YB
Actuator Type	Push Button
Best Sellers Rank	#39,775 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #96 in Dimmer Switches
Brand Name	WayinTop
Contact Type	Momentary
Controller Type	Push Button
Current Rating	0.5 Amps
Customer Reviews	4.3 4.3 out of 5 stars (151)
International Protection Rating	IP54
Item Dimensions	10 x 5 x 0.5 centimeters
Manufacturer	WayinTop
Material Type	Copper
Model	WYTP68
Mounting Type	Snap In Mount
Number of Positions	20
Operating Voltage	5 Volts
Operation Mode	Off,Push Button
Switch Type	Push Button
UPC	744678327358
Unit Count	1 Count

Reviews

S**B

Work great on the project I was working.

2.01.2025

A**R

High quality works perfect

22.01.2026

D**H

works but is backwards compared to stock rotary knob. Not a huge deal to spin it the opposite direction, though I spin it the wrong way the first time about 99% of the time. Could take it apart and re-wire the 2 pins but it doesnt bother me enough to actually fix it. Only needed 1 so I sold the other 4 on eBay.

30.07.2025

C**B

TYhey work just fine.

27.07.2023

S**R

Aren't working as they should, they register the wrong direction at least half of the time. exemple as i turn left it goes left-right-right-left-right. tested 2 of the five, canno't return them cause i needed to solder wires to it, stay away!

30.06.2022

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