Data Sheet

VMA330

V. 01 – 05/04/2018 3 ©Velleman nv

5. Overview

VMA330

This module is an inexpensive solution for an obstacle avoidance sensor, perfect for robotic projects and very

easy to interface directly with Arduino

and compatible boards. The module has two potentiometers, one to

control frequency and one to control the intensity.

operating voltage: 3.3 V to 5 V

output: digital (on/off)

detection threshold: adjustable by 2 trimmers

distance range: 2 to 40 cm

adjustment R5: frequency adjustment 38 kHz (already optimized)

adjustment R6: IR LED duty cycle adjustment (already optimized)

operating temperature: -10 °C to +50 °C

effective angle: 35°

I/O interface: 4 wire interface (- / + / S / EN)

dimensions: 45 x 16 x 10 mm

weight: 9 g

6. Pin Layout

3.3 V to 5 V power

Gnd

ground

OUT

signal

enable pin low level (usually not used)

7. Example

Here is a small example to test the sensor. By default, the sensor turns to 1 on the serial monitor. When

detecting something, the sensor returns to 0.

Tip: The VMA330 can be used as an IR remote-control tester as well! Point any IR remote control towards the

VMA330 and you will see the SLED flashing when the remote is working.