Where do you connect the second and third and fourth encoder?

Using Arduino Sensors
1

Hello, I have one encoder connected to 5V, GND, Dig#2 and Dig#3. Can I connect the second encoder to 5V, GND, Dig#4, Dig#5, and the third encoder to 5V, GND, Dig#6, Dig#7, and the fourth encoder to 5V, GND, Dig#8, Dig#9?
Will the Arduino Leonardo have enough current to power all four, or do I need 4 separate Arduino Leo boards with one encoder per board?

2

jblack155:
Hello, I have one encoder connected to 5V, GND, Dig#2 and Dig#3. Can I connect the second encoder to 5V, GND, Dig#4, Dig#5, and the third encoder to 5V, GND, Dig#6, Dig#7, and the fourth encoder to 5V, GND, Dig#8, Dig#9?
Will the Arduino Leonardo have enough current to power all four, or do I need 4 separate Arduino Leo boards with one encoder per board?

What encoders? Most encoders use a LED and a transistor to operate. Can you light 4 LEDs with your Arduino board? Of course you can. But without knowing what you are referring to, there could be all kinds of problems.

Paul

3

Rotary encoders? Like these?

Don't forget the resistor/capacitor filter at the bottom of page 2.

4

I am using 4 incremental rotary encoders (US digital E2) to create a joystick with 4 channels. Pls see link below.

https://www.usdigital.com/products/encoders/incremental/rotary/kit/E2

I want to hook up the A and B channels to digital pins 1 thru 8 and parallel all four 5V pins and GND pins.

Will this work or will it blow my Arduino Leo

5

Hi,

Leonardo board has 5 external interrupts. if you going to use my library you can connect up to 5 encoders with push buttons. If don't care about slow button reaction you can connect encoders as much as you want, because I'm using Timer1 to read encoders states for AVR.

Topic - Lightweight Arduino Library for Rotary Encoder
Library - GitHub - enjoyneering/RotaryEncoder: This is small and fast Arduino library for Rotary Encoder with interrupts.