how to use SparkFun MOSFET Power Control Kit?

Using Arduino General Electronics
1

Dear all,

I tried many times to wire MOSFET breakout board from SparkFun. It did not work.

Here is my understanding in my wiring:

At 3-pin terminal:

connect to

  • =======> +60 VDC power supply
  • =======> GND power supply & Arduino GND
    C =======> Arduino PWM pin# 3

At 2-pin terminal:

  • =======> +24VDC motor power jack
  • =======> GND motor power jack

Any thing wrong here?

Thanks for your help.

2

Here is my understanding in my wiring:

You are a bit off:-

  1. Do you have a 120V power supply? If not then it is not +60 and -60, it is +60 and ground.

  2. You should have a 130R ( at least ) series resistor, it will not stop things working without this but it will prevent the Arduino from being damaged.

  • ===> +60 VDC
  • ===> -60 VDC

Given it is not -60V as in 1) then you seem to be wiring the power supply directly across the FET. This will blow up the FET.

  • ===> motor +
  • ===> motor -

What does that mean?

Basically your description of the wiring does not convey to me how it is wired. You need to draw a schematic if you want to show how things are wired up and then we can say if it is correct or not.

3

Thanks a lot.
I've corrected my post.
Here is the illustration how the wire goes.

Please help me on this.

4

How is the MOSFET soldered to the board?

Tab toward the resistor, or tab away from the resistor?

Not working means...motor doesn't turn?
-fab

5

Is the MOSFET logic level?

6

First off that FET is only rated at 60V absolute maximum so you should not be running it at 60V. Also why do you want to run a 24V motor at 60V? You should also have a diode across your motor.

If that wiring does not make the motor move then it suggests to me that something is fried or is not wired up like you think it is, or your software is in error.

7

Grumpy_Mike:
First off that FET is only rated at 60V absolute maximum so you should not be running it at 60V. Also why do you want to run a 24V motor at 60V? You should also have a diode across your motor.

If that wiring does not make the motor move then it suggests to me that something is fried or is not wired up like you think it is, or your software is in error.

Actually, I was trying to downgrade power supply DC voltage from 42V to 24V. The reason is that I want to adjust the light intensity based on what plant needs. Running full light intensity is wasting energy over the entire growth stage and not suitable for various plant species.

fabelizer:
How is the MOSFET soldered to the board?

Tab toward the resistor, or tab away from the resistor?

Not working means...motor doesn't turn?
-fab

I got two power kits from Sparkfun. One is working; the other one is down due to bad soldering. The working one does its job by following this tutorial. The Arduino UNO was powered by 12VDC. The power kit breakout board was connected with GND and Vin on Arduino. Gate pin was connected to Arduino PWM pin.

8

So you edit the first post and make me look like an idiot. Thanks. >:(

Now you say you want to run it off a smaller voltage?

What exactly do you want to do? What ever it is there is no relationship between it and what you now seem to be asking.