So with NO, COM, NC arrangement, use the first 2 terminals (left to right) as your switch.
dlloyd:
So with NO, COM, NC arrangement, use the first 2 terminals (left to right) as your switch.
it's not working even NC+COM or NO+COM
it there any wiring mistake on my #1 diagram?
Can you post a link for the relay board.
Also, I didn't see any connection to COM in your drawing.
FYI, I found the attached schematic on the web. Not sure how it helps.

Your diagram in reply#1 looks OK ... (COM and NO).
Remember that logic LOW to the input would activate the relay.
Sorry ... need to go (I'll check this thread tomorrow) ...
raschemmel:
Can you post a link for the relay board.
Also, I didn't see any connection to COM in your drawing.FYI, I found the attached schematic on the web. Not sure how it helps.
#1: the middle one is COM (connect with yellow wire)
aren't they similar?
http://yourduino.com/sunshop2/index.php?l=product_detail&p=156
Maybe it's just me, but as yet I haven't seen any 12v AC supply for that 12v AC pump yet.
Assuming the 12v AC pump is an induction type and not series.
bluejets:
Maybe it's just me, but as yet I haven't seen any 12v AC supply for that 12v AC pump yet.Assuming the 12v AC pump is an induction type and not series.
what i mean:
i want to use a 12v DC power supply
to
power a AC water pump
I search for hours, SSR seems the answer
yashiharu:
i want to use a 12v DC power supply
Put +12V to the common of the relay switch. the +ve of your pump then gets connected to the NO connection of the relay switch. The -ve connection of your power supply then goes to the -ve connection of your pump. This is not rocket science. The relay is simply acting as a switch to connect your 12v power supply to your pump.
As an ENTIRELY different issue, you need to provide 5v to the relay board JD-VCC. Otherwise the control logic circuits will not translate your digital signals to turn on the relay.
You also need to provide VCC from your arduino to VCC of the relay board. Then you can provide 0v to any of the digital inputs and their associated relays will activate.
KenF:
Put +12V to the common of the relay switch. the +ve of your pump then gets connected to the NO connection of the relay switch. The -ve connection of your power supply then goes to the -ve connection of your pump. This is not rocket science. The relay is simply acting as a switch to connect your 12v power supply to your pump.As an ENTIRELY different issue, you need to provide 5v to the relay board JD-VCC. Otherwise the control logic circuits will not translate your digital signals to turn on the relay.
You also need to provide VCC from your arduino to VCC of the relay board. Then you can provide 0v to any of the digital inputs and their associated relays will activate.
led is blink as switch
but no click
5V to JD-VCC is too low?
yashiharu:
what i mean:i want to use a 12v DC power supply
to
power a AC water pumpI search for hours, SSR seems the answer
Solid State Relay is no different from any other relay in basic operation.
Show pic or details of the pump you want to run and power supply you intend to use to drive the pump.
As I said previously, unless the motor is a series type motor it will not run on DC supply.
bluejets:
Solid State Relay is no different from any other relay in basic operation.Show pic or details of the pump you want to run and power supply you intend to use to drive the pump.
As I said previously, unless the motor is a series type motor it will not run on DC supply.

I thought it like a convertor for AC<->DC
#1
The pump is Aqua One Maxi Power Head 102 12V-AC, 50H
yashiharu:
led is blink as switch
but no click5V to JD-VCC is too low?
The board is probably already damaged by giving it 12v in the past.
KenF:
The board is probably already damaged by giving it 12v in the past.
i just test with my 3V DC pump with #1 diagram
it still work fine with click and bling
you mean normally, 5v for JD-VCC to a 12VDC/AC switch is enough?
so it's not normal if i just have no click?
yashiharu:
iyou mean normally, 5v for JD-VCC to a 12VDC/AC switch is enough?
so it's not normal if i just have no click?
So 3v works, 12v works but 5v doesn't?
I doubt your competence.
Back again for a bit.
The 8 relay module is SRD-12VDC-SL-C (12V coil) so JV-VCC needs 12V (jumper must be removed).
There is confusion here I think because the 5V version (SRD-5VDC-SL-C) is more common, but your picture verifies the SRD-12VDC-SL-C part number.
The diagram you have in post#1 looks good.
If you take a wire from In1 and touch it to Arduino GND (not relay board GND), the relay should click. If not, then try touching In2 to Arduino GND ... does Relay#2 click?
KenF:
So 3v works, 12v works but 5v doesn't?I doubt your competence.
DC water pump is 3v-6v
so i think the 5V from Arduino can trigger for relay
this time, it is AC water pump 250VAC 50Hz (on pdf it said 12V-AC 50Hz)
that why i guess 5v is too weak to trigger
I am very new to all this thing ...
i can just guess, search, trial and error ...
dlloyd:
Back again for a bit.The 8 relay module is SRD-12VDC-SL-C (12V coil) so JV-VCC needs 12V (jumper must be removed).
There is confusion here I think because the 5V version (SRD-5VDC-SL-C) is more common, but your picture verifies the SRD-12VDC-SL-C part number.
The diagram you have in post#1 looks good.
If you take a wire from In1 and touch it to Arduino GND (not relay board GND), the relay should click. If not, then try touching In2 to Arduino GND ... does Relay#2 click?
with 12v JD-VCC, click and bling correctly
just the AC water pump has no respond
Awesome ... only the load wiring to worry about.
If the load is a 12VAC pump, do you have 12VAC power available?
This is what I've been trying to get across.
The op is (incorrectly) of the belief he can run an AC pump from his DC supply.
bluejets:
This is what I've been trying to get across.The op is (incorrectly) of the belief he can run an AC pump from his DC supply.
OR, maybe he'll be attempting to drive his relay board from AC. He seems convinced that you have to use the same supply for the relay board as the device you're driving.