Recently i bought the dfrobot Gravity: MOSFET Power Controller as i was looking for a simple mosfet .My task is to open the circuit of a ground wire ~1amp dc and connect the mosfet drain and source on the ends of the now open circuit of the wire and controll it when i want to. the initial task is to open and close for 100ms intervals when i press.BUT the problem is that the module on the load side it has VIN VOUT and GND and on the controll side (arduino) it has +5, gnd and signal.
Send an image of your module.
If you have skills with electronics and soldering perhaps you can rework it.
PS: If this is the case, you can even rework it, but it's not easy.
Get a simple N-channel mosfet, logic level, like the IRLZ44. It will work in the low side, as you mention.
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VCC1 in your schematic 1/ is critical, if the voltage is to low you will probably fry the FET, it may not work, or not turn on. Check the Vgs of the MOSFET used. R2 will cause turn on problems, short it it if it does. You have separate input and outputs because they are isolated. Each side needs its reference (ground) but they may not be the same. Both sides need need power, they may not be the same, the LED is powered by the Arduino port, hence VCC is not needed. The output drive to pin 3 is powered by VCC1. This is a high side switch.
This should be your module. Just like the picture in post #2.
SPECIFICATION
- VIN Operating Voltage: 5V-36V DC
- VIN Operating Current: 0A-20A (Suggest external heat sink when the current over 10A )
- Logic Operating Voltage: 3.3~10V DC
- Logic Control Signal: 3.3~10V DC
- Switching Frequency: 0-1KHz
- Switching Character: T(on)=20us/T(off)=50us
- Operating Temperature: -55℃-155℃
- Interface Type: PH2.0-3P
- Dimension: 4432 mm/ 1.731.26 inches
So exactly what is the problem? What exactly in detail are you trying to do? Post your schematic and any code you plan to use.
Ron
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Which MOSFET is on the module? Ref the drawing in post # 1, what is the voltage of "single"? Of VCCI? What is the value of R3? What is connected to P2?
The code is a simple blink example.Do you really need a schematic? It is just a GND wire from a +12v ~1 amp circuit cut and the plan is to wire a MOSFET to close that circuit and open it .
i woudnt say i have the skills but i can say i really want to try and get it done.What exactly do i need to do?
You are right but the specific one is not available in my country but I will search for logic level.
So there is no way to get it to work on my circuit ? even with resoldering some parts?
Doesnt the schematic that i sent show resistor values and connection?
You can use your module but in the high side.
If your 'blink circuit' is just an LED, instead of in the GND side, put the module in the VCC side of the LED. Like in the example of their site:
Instead of the lightbulb put the LED, and add also the led resistor to limit the current.
Other options would be to use an optocoupler like the 4n35 or pc817, only if the current is small, less than 50mA, like an LED. Or a relay, for higher power switch.
But it depends, explain what you want to do exactly, with an schematic even with pencil&paper.
Easier would be to use a logic level mosfet or even a BJT transistor. Can not you order it in Aliexpress, Amazon or similar? there are many options very cheap.
I will prolly end up buying a logic level I think . If I find some time later I might send you a schematic.
One of these is what you want
Oh, wow.
But - why would anybody do that??
Too big trunk for such a short travel 
If the positive side of your load is already connected to a power source, then there is no need to use this connection.
Looking at the reverse side of the PCB you can see that it is just a straight through connection from VIN+ to VOUT+:
