RLYSHIELD Datasheet RLYSHIELD | P4-P5

Relay Shield - Sample Setup

Relay Shield - Sample Code

intRELAY1=D3;

intRELAY2=D4;

intRELAY3=D5;

intRELAY4=D6;



voidsetup()

{

//Initilizetherelaycontrolpinsasoutput

pinMode(RELAY1,OUTPUT);

pinMode(RELAY2,OUTPUT);

pinMode(RELAY3,OUTPUT);

pinMode(RELAY4,OUTPUT);

//InitializeallrelaystoanOFFstate

digitalWrite(RELAY1,LOW);

digitalWrite(RELAY2,LOW);

digitalWrite(RELAY3,LOW);

digitalWrite(RELAY4,LOW);



//registertheParticlefunction

Particle.function("relay",relayControl);

}



voidloop()

{

//Thisloopsforever

}



//commandformatr1,HIGH

intrelayControl(Stringcommand)

{

intrelayState=0;

//parsetherelaynumber

intrelayNumber=command.charAt(1)‐'0';

//doasanitycheck

if(relayNumber<1||relayNumber>4)return‐1;



//findoutthestateoftherelay

if(command.substring(3,7)=="HIGH")relayState=1;

elseif(command.substring(3,6)=="LOW")relayState=0;

elsereturn‐1;



//writetotheappropriaterelay

digitalWrite(relayNumber+2,relayState);

return1;

}

An example API request to this function would look something like this:

POST/v1/devices/{DEVICE_ID}/relay



#EXAMPLEREQUEST

curlhttps://api.particle.io/v1/devices/0123456789abcdef/relay\

‐daccess_token=123412341234‐dparams=r1,HIGH

Relay Shield - Specifications (v3.x.x)

 Operating voltage: 7 to 20V DC

 Current consumption: 150mA min to 290mA max (at 9V DC)

 Relay Max Voltage: 220V AC

 Relay Max Current: 10Amp at 125V AC

 Relay Part Number: JS1-5V-F

 Dimensions: 6.0" x 1.7"

 Weight: 80 gms

Drill Template > https://docs.particle.io/assets/images/shields/relay-shield/relay-shield-template.pdf

https://docs.particle.io/datasheets/particle‐shields/#relay‐shield10‐19‐17

P1-P3 P4-P5

RLYSHIELD

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