DC Motor Speed Controller - PWM Adjustable 0-20KHz Switch Drive Module, DC 5V-36V, 15A (Max 30A), 400W FET Trigger - Pack of 10 Pcs

With the addition of a volt and amp meter I could see where and when the trigger part was failing the mosfet board, I must have destroyed close to 10 of them because of this little unknown part of the trigger.The second photo shows the PS the red meter shows the voltage of the trigger and the orange meter shows the ma of that voltage. And that is where the problem was. The ma of the Trigger is somewhere above the the 3.8ma.My fix was to put a 47k adjustable resistor and monitor the ma so it doesn't go beyond the 3.8.The leds are the back emf to keep the mosfet cooler.I just posted a pic of my latest work. I added a 10k VR to adjust the pwm/triger. What I am finding out is when I turn the VR down the rpm goes up and the ma goes down.And the digital thermal monitor tells me how hot the mosfet chips are getting.I well tell you. I used to use a 3v blue cube for this project and untill now I could not get past 5000 rpm before the cube melted.

I am using this MOSFET to control a solenoid, which is used to pump air (think Aquarium Air Pump but a little bigger). It provides enough current to reliably cycle the solenoid and works flawlessly.I like the fact that it is more of a "maker space" type of device, and doesn't require breadboarding. It is a "one-stop shop" for the output.Note that if you are using this device to turn on inductive devices, like solenoids, you will need to install a "Snubber" diode across the output to protect the MOSFET circuit. I did so as well. The inductive back current could cause the MOSFET to fail otherwise. I've seen some comments about the failures of this MOSFET. Chances are those people did not protect the circuit. A simple diode will work. Do some research on Google if you are curious.

These let you control high voltage power from a standard 5v or 3.3 volt device.Imagine you want to control a 12 or 24v high current device like a light from a low power device like an Arduino - this is the thing to use!In addition these boards can use a pwm source to control the amount of power supplied by the high power side. Effectively you can use your Arduinos digital pwm output to control the higher power output like a dimmer switch)

It seems to work with 10KHz PWM without load. But once connected to an L298N board, it puts our maximum voltage. It killed my PCA 9685 board.

I love these things, yah I could make my own but everything is just there and ready to go in a perfect little package, my only request is consider selling them without the screw terminal blocks, not everyone wants those chunky things, I'd be happier soldering leads directly to pads or holes and they are a pain to remove.I think iv ordered 5 sets now and already used half of them in various projects

These are such a time saver, I have never had one fail and always had good luck with these out of the box.

I got these based on my previous experience with EPLZON's buck converter, which I rated highly. I am using these switch modules to control a DC motor via an Arduino and for that purpose they work well.These switches appear to be a generic commodity item, available from several different vendors and all appearing to have been made in the same factory. Packaging was odd as many of the module circuit boards were still all attached to each other, one group of five and the other group having broken apart during shipping. The groups of five each came in a non-anti-static bubble-wrap bag and those two bubble bags then inside a sealed anti-static mylar bag.The MOSFET switches appear well made and clean. The switches are labeled on the back side and are fairly intuitive to use. The Amazon listing shows specifications but no instructions. However, you can find detailed instructions on some of the other vendor's listings if you need them.I would buy these again.

Put these to use in a large LED lighting system ... they handle the drive current with no problem. Much easier than building my own boards.