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DFR0144 Datasheet(PDF) 3 Page - DFROBOT

Part # DFR0144
Description  Relay Shield for Arduino V2.1 (SKU:DFR0144)
PDF  8 Pages
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Manufacturer  DFROBOT [DFROBOT]
Direct Link  https://www.dfrobot.com/
Logo DFROBOT - DFROBOT

DFR0144 Datasheet(HTML) 3 Page - DFROBOT

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Digital 10   NC4 is disconnected with COM4 
NC4 is connected with COM4  
 
NO4 is connected with COM4
NO4 is disconnected with COM4  
Note: NC: Normally Closed; NO: Normally Open.
 
More detalis:
PROG SWITCH:  
o
PROG: When programming or download the code if you plug the Xbee/bluetooth on the 
module 
o
RGN: Run the module after finishing downloading the code  
S1,S2,S3,S4: 4 Buttons to test the module that you needn't program,S1‐ S4 correspond to relay1‐
relay4 
Servo Power Supply: Just can supply power to the digital IO pins.
4 Digital IO selection headers for the Relays:  
o
D2,D7,D8,D10: Default,connect to Arduino digital 2,7,8,10 to drive the relays 
o
IO0,IO1,IO2,IO3:Connect to XBee's IO pins 
o
You can connect the middle pin header after you unplug the jumper, to Arduino digital 
IO with jumper cables depend on your needed pin mapping to drive relays. For 
example, when you use the board with an Arduino Ethernet board. They will conflict 
the digital 10, so you should remove the jumper on D10, and connect the middle pin 
to other digital IO. 
XBee interface:
The XBee module supports Xbee radios, Bluetooth Bee, and the Wireless 
programming module. This gives the project a versatile wireless communications capability. 



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