Hello all,
I am trying to connect a 12V fan heater to the arduino,
the result that i would like to get is using the arduino UNO to power on and off the heater,
i am little bit confused about using relay and i have got some question about it,
but first i will tell you what i am using in this circuit:
the battery of the circuit will be a 12V 45Ah car battery ( not connected to a car )
the heater is 12V 13A 150W.
Genuine Arduino UNO
Now the first question is what kind of relay module should i use? for example is this one i chose ok ?
1,normally open interfaces Maximum load : AC 250V/30A, DC 30V/30A;
2, Using SMD optocoupler isolation , driving ability , stable performance ; trigger current 5mA;
3,The module voltage is 5V ,12V, 24V are available ;
4 , The module can be set high or low triggered by jumper;
5 , Relay control terminal voltage and trigger terminal voltage jumpers can be powered completely isolated before and after class , to do after two different voltage requirements ( such as a relay with 24V, trigger with 5V), you need to contact customer service to change the parameters , prices have different ;
6 , Fault-tolerant design , even if the control line is broken , the relay will not operate ;
7 , The power indicator ( green ) , relay status indicator ( red );
8 ,Interface design humane, all interfaces can be connected directly via terminal wiring leads , very convenient;
Technical parameters:
Relay version Quiescent Current Maximum current Trigger Current
5V 5mA 190mA 2-4mA
12V 5mA 80mA 2-4mA
24V 5mA 50mA 2-4mA
Module Interface Description :
1.DC +: Module DC power supply positive ( positive terminal voltage trigger );
2.DC-: DC power supply module negative ( negative terminal voltage trigger );
3.IN: Signal trigger terminal ( same as the default trigger voltage power supply );
4.JD +: positive voltage relay control terminal;
5.JD-: negative voltage relay control terminal;
6.DC + and JD + with a short jumper , DC- and JD- cap with a short jumper , triggering the same end and relay control terminal voltage;
7 high and low trigger mode selection , as shown , when the jumper is connected with the L side , IN terminal is low triggered when the terminal is connected to the high level trigger H;
8 normally closed terminal (NC): relay normally closed terminal;
9 common terminal (COM):. Relay common;
10 normally open (NO):. Relay normally open.
The relay will be powered by the arduino 5V/GND + signal like in the picture? ( attached )
any suggest to make this working efficently and to choose the relays in the future is very very welcome,
thank you guys
