VMA347 USER MANUAL 2
VMA347 USER MANUAL 1. Introduction To all residents of the European Union Important environmental information about this product This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialized company for recycling. This device should be returned to your distributor or to a local recycling service. Respect the local environmental rules.
VMA347 5. Overview General The VMA347 is an LM393 speed sensor module, widely used in motor speed detection, pulse count, position control, etc. The sensor is very easy to operate: To measure the speed of a motor, make sure the motor has a disk with holes. Each hole should be equally spaced on the disk. Every time the sensor sees a hole, it creates a digital pulse on the D0 pin. This pulse goes from 0 V to 5 V and is a digital TTL signal.
VMA347 7. Testing Sketch const int sensorPin = 2; // PIN 2 has been used as input void setup() { Serial.begin(9600); pinMode(sensorPin , INPUT); } void loop(){ int value = 0; value = digitalRead(sensorPin ); if (value == LOW) { Serial.println("Active"); } if (value == HIGH) { Serial.println("No-Active"); } delay(1000); } The result in the serial monitor: Use this device with original accessories only.
Velleman® Service and Quality Warranty Since its foundation in 1972, Velleman® acquired extensive experience in the electronics world and currently distributes its products in over 85 countries. All our products fulfil strict quality requirements and legal stipulations in the EU. In order to ensure the quality, our products regularly go through an extra quality check, both by an internal quality department and by specialized external organisations.
