Data Sheet

VMA435
V. 01 13/04/2018 3 ©Velleman nv
5. Overview
VMA435
A rotary encoder is a rotary input device that provides an indication of how much the knob has been rotated
and what direction it is rotating in. It is a great device for stepper and servo motor control.
working voltage: 0-5 V
type: incremental encoder
material: PCB + brass
cycles per revolution (CPR): 20
dimensions: 26 x 19 mm
weight: 10 g
6. Pin Layout
CLK
DT
SW
+
Gnd
7. Example
This is a simple sketch that shows how to count the encoder position and how to determine direction of
rotation. It has no switch debounce, nor does it use interrupts. A fully developed application might need to
incorporate these in order to make it robust.