Velleman VMA344 User Manual
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Velleman VMA344 User Manual

Velleman VMA344 User Manual

A/d d/a converter module
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VMA344
A/D D/A CONVERTER MODULE PCF8591
USER MANUAL

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Summary of Contents for Velleman VMA344

  • Page 1 VMA344 A/D D/A CONVERTER MODULE PCF8591 USER MANUAL...
  • Page 2  Nor Velleman nv nor its dealers can be held responsible for any damage (extraordinary, incidental or indirect) – of any nature (financial, physical…) arising from the possession, use or failure of this product.
  • Page 3 The VMA344 - PCF8591 is a monolithically integrated, low-power, 8-bit CMOS data acquisition device. The PCF8591 has four analogue inputs, one analogue output and a serial I2C bus interface. For testing purposes, the VMA344 contains a LDR, NTC and a trimmer, which are connected to the PCF8591 by 3 jumpers.
  • Page 4 VMA344 light sensor AIN0 AIN1 AIN2 AIN3 potentiometer power LED temperature sensor signal LED jumpers P4, P5, P6 AOUT Test Example 1: Reading the 4 Analogue Inputs 1. Make the connections as mentioned before. You will not need the A0 connection for this example.
  • Page 5 VMA344 Software Example #include "Wire.h" #define PCF8591 (0x90 >> 1) byte adcvalue0, adcvalue1, adcvalue2, adcvalue3; void setup() Wire.begin(); Serial.begin(9600); void loop() Wire.beginTransmission(PCF8591); Wire.write(0x04); Wire.endTransmission(); Wire.requestFrom(PCF8591, 5); adcvalue0=Wire.read(); adcvalue0=Wire.read(); adcvalue1=Wire.read(); adcvalue2=Wire.read(); adcvalue3=Wire.read(); Serial.print(adcvalue0); Serial.print(" ,"); Serial.print(adcvalue1); Serial.print(" ,"); Serial.print(adcvalue2); Serial.print(" ,");...
  • Page 6 © COPYRIGHT NOTICE The copyright to this manual is owned by Velleman nv. All worldwide rights reserved. No part of this manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise without the prior written consent of the copyright holder.
  • Page 7 • Velleman® can decide to replace an article with an equivalent article, or to refund the retail value totally or partially when the complaint is valid and a free repair or replacement of the article is impossible, or if the expenses are out of proportion.

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Pcf8591

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