Whadda WPM400 User manual

USER MANUAL
EN
4-channel relay module
WPM400
whadda.com

2
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 Whadda! 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.
Safety Instructions
Read and understand this manual and all safety signs before using this appliance.
For indoor use only.
•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.
General Guidelines
•Refer to the Velleman®Service and Quality Warranty on the last pages of this manual.
•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 unauthorized 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 Group 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.
•Keep this manual for future reference.

3
What is Arduino®
Arduino®is an open-source prototyping platform based on easy-to-use hardware and
software. Arduino®boards are able to read inputs –light-on sensor, a finger on a button or a
Twitter message –and turn it into an output –activating of a motor, turning on an LED,
publishing something online. You can tell your board what to do by sending a set of
instructions to the microcontroller on the board. To do so, you use the Arduino
programming language (based on Wiring) and the Arduino®software IDE (based on
Processing). Additional shields/modules/components are required for reading a twitter
message or publishing online. Surf to www.arduino.cc for more information.
Product Overview
This 4-channel relay interface board can control various appliances and other high-current
equipment. It can be controlled directly by any micro-controller.
Specifications
•control input current (in1 to in4): 5-15 mA
•control input voltage: 5-12 VDC
•relay output: 250 VAC, 10 A; 30 VDC, 10 A (non-inductive)
•dimensions: 75 x 55 x 19 mm
•weight: 61 g
Features
•standard interface that can be controlled directly by any microcontroller
•opto-isolated inputs
•indicator LEDs for relay output status
Pin Layout
VCC
5 VDC power
GND
ground
In1
signal pin, connected with Arduino®and control relay 1
In2
signal pin, connected with Arduino®and control relay 2
In3
signal pin, connected with Arduino®and control relay 3
In4
signal pin, connected with Arduino®and control relay 4
COM
common terminal low side optocouplers (normally tied to GND)

4
Connection
Connection
#define RELAY1 13
#define RELAY2 12
#define RELAY3 11
#define RELAY4 10
void setup()
{
// Initialize the arduino data pins for OUTPUT
pinMode(RELAY1, OUTPUT);
pinMode(RELAY2, OUTPUT);
pinMode(RELAY3, OUTPUT);
pinMode(RELAY4, OUTPUT);
}
void loop()
{
digitalWrite(RELAY1, HIGH); // Turns ON Relay 1
delay(2000); // Wait 2 seconds
digitalWrite(RELAY1, LOW); // Turns OFF Relay 1
digitalWrite(RELAY2, HIGH); // Turns ON Relay 2
delay(2000); // Wait 2 seconds

5
digitalWrite(RELAY2, LOW); // Turns OFF Relay 2
digitalWrite(RELAY3, HIGH); // Turns ON Relay 3
delay(2000); // Wait 2 seconds
digitalWrite(RELAY3, LOW); // Turns OFF Relay 3
digitalWrite(RELAY4, HIGH); // Turns ON Relay 4
delay(2000); // Wait 2 seconds
digitalWrite(RELAY4, LOW); // Turns OFF Relay 4
}

6
whadda.com
Modifications and typographical errors reserved - © Velleman Group nv. WPM400_v01
Velleman Group nv, Legen Heirweg 33 - 9890 Gavere.