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VMA303 

V. 01 

 02/02/2017 

©Velleman nv 

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. 

If

 

in doubt, contact your local waste disposal authorities. 

Thank you for choosing Velleman

®

! Please read the manual thoroughly before bringing this device into service. 

If the device was damaged in transit, do not install or use it and contact your dealer. 

 

2.

 

Safety Instructions 

 

 

This device can be used by children aged from 8 years and above, and persons with 
reduced physical, sensory or mental capabilities or lack of experience and knowledge if 
they have been given supervision or instruction concerning the use of the device in a 
safe way and understand the hazards involved. Children shall not play with the device. 
Cleaning and user maintenance shall not be made by children without supervision. 

 

 

 

Indoor use only. 

Keep away from rain, moisture, splashing and dripping liquids. 

 

3.

 

General Guidelines 

 

 

Refer to the Velleman

®

 Service and Quality Warranty on the last pages of this manual. 

 

Familiarise yourself with the functions of the device before actually using it. 

 

All modifications of the device are forbidden for safety reasons. Damage caused by user 
modifications to the device is not covered by the warranty. 

 

Only use the device for its intended purpose. Using the device in an unauthorised way 
will void the warranty. 

 

Damage caused by disregard of certain guidelines in this manual is not covered by the 
warranty and the dealer will not accept responsibility for any ensuing defects or 
problems. 

 

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.  

 

Due to constant product improvements, the actual product appearance might differ from 
the shown images.  

 

Product images are for illustrative purposes only. 

 

Do not switch the device on immediately after it has been exposed to changes in 
temperature. Protect the device against damage by leaving it switched off until it has 
reached room temperature. 

 

Keep this manual for future reference. 

 

Summary of Contents for VMA303

Page 1: ...VMA303 ARDUINO COMPATIBLE SOIL MOISTURE SENSOR WATER LEVEL SENSOR MODULE USER MANUAL ...

Page 2: ...aning and user maintenance shall not be made by children without supervision Indoor use only Keep away from rain moisture splashing and dripping liquids 3 General Guidelines Refer to the Velleman Service and Quality Warranty on the last pages of this manual Familiarise yourself with the functions of the device before actually using it All modifications of the device are forbidden for safety reason...

Page 3: ...elleman VMA100 Arduino Uno and the soil moisture sensor module The soil moisture sensor module built around the LM393 comparator not included gives an active low L level output when the soil is dry determined by a pre set threshold value This digital output wet soil L dry soil H is routed to one I O terminal D2 of the Arduino microcontroller Based on this input at D2 Arduino gives an active high H...

Page 4: ...oil Sensor input at Analog PIN A0 int value 0 void setup Serial begin 9600 pinMode GLED OUTPUT pinMode RLED OUTPUT Serial println SOIL MOISTURE SENSOR Serial println void loop value analogRead SENSE value value 10 Serial println value if value 50 digitalWrite GLED HIGH else digitalWrite RLED HIGH delay 1000 digitalWrite GLED LOW digitalWrite RLED LOW ...

Page 5: ...is product and the latest version of this manual please visit our website www velleman eu The information in this manual is subject to change without prior notice 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 con...

Page 6: ...n shocks falls dust dirt humidity and by the article as well as its contents e g data loss compensation for loss of profits consumable goods parts or accessories that are subject to an aging process during normal use such as batteries rechargeable non rechargeable built in or replaceable lamps rubber parts drive belts unlimited list flaws resulting from fire water damage lightning accident natural...

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