HiLetgo 12V~40V 10A PWM DC Motor Speed Control Switch Controller Voltage Regulator Dimmer for Arduino

I am using this between a 10 amp power supply and a 10 amp brushed motor. It give me a very precise speed control. The effective output filtering essentially converts the power supply to a variable power supply. Would be interesting to try this with a higher voltage supply but I haven't tried that yet.

This module works exactly as described and produces a clean square PWM signal. Definitely recommend.

The one I received was a moderately simple circuit based on a 555 timer controlling a TO220 RU7088R 6mOhm N-channel FET with a "SBR40100" TO220 flyback diode. Using a radiator fan from a car that drew 11.5A @ 13V, the unit saw about 14C temp rise on the PCB and 9 degree C temp rise on the FET heatsink after about 20 minutes of use at 90% duty cycle, as measured with a thermal camera. Somewhat surprisingly, the cheap no-name 7812 voltage regulator was one of the hottest components on the board - but still not toooooooo bad. (I'm sure it would be worse with higher than 13 volt supply) Not suprisingly, the obviously cheap PCB traces were one of the hottest parts of the board with 11+Amps going through it. While the ratings on the FET are not bad (70V / 80A) I would not recommend going even close to that because the flyback diode is only rated for 20A as one leg of the diode is used for reverse polarity protection on wiring. I scoped it and ran a little torture testing on this piece because I wanted to make sure it wasn't a total piece that was going to blow up instantly. The edges were being controlled softly enough that the bounces from this particular fan were sending the voltage no higher than about 16V (on 13V supply). The extent of flyback is going to be determined by the inductance of whatever motor you're playing with so it's hard to say what the true limits of this piece are. Personally, I'd keep the loads at/under 24V supply. If using a really heavy inductive load, I might add some extra filter caps on the motor output. Realistically, I'd say this unit could easily handle 15A switching with nothing more than a fuse change at 12V with moderately inductive motor loads as long as the PCB was beefed up with additional wires to share the current through the motor control path. The issues observed at 13V/11A are only going to get worse using this device further beyond its ratings.

We try to buy from the Ma and Pa places on here.Being disabled . We need to be price conscious.At "The Mother In Laws Place"It is an off-grid cabin, we run DC on a lot of things .We see no need to use the inverter 24/7.just so you can turn on a light when you come home .We use LED bulbs in ceiling mount fixtures that are marked 12-volt DC only.These are controlled by controller with a FOB remote.The controller is board mounted on our PV control center .We use a few of the controllers for different rooms to control each ceiling light .We also run the kitchen stove exhaust fan with DC .The fresh air intake system for combustion is DC .These are fused in our DC only fuse center .This fuse center is controlled by a service disconnect at the DC master box .We also run two AC fuse boxes on our PV board .One protects various AC 110 volt circuits in the cabin , garage and sauna .The other protects 220 volt circuits from the aux gen set and to the split ac/heat pump and the aux battery charger for when the PV and hopefully soon to be wind generated power are not enough to keep up.We run 8 - 6volt Rolls batteries tied by Buss bars .They are temperature and voltage monitored on the PV board and by the inverter unit.The power is inverted by a Renogy 3000 .It also has a multi stage charger built it with flow through capability .These are almost all protected by Breakers purchased here .We have a remote shallow well system that we use a soft start unit on .It lessens the instant draw on the system .It is all about power management.This is a semi detailed , general description of some of the off grid power systems we use .I am going to add this review to each one of the parts bought on here .

Works great to control speed of DC motor.

Been using it to drive a few different types of motors and so far it been holding up well, no overheating nor burn out. Very good 👍 and time will tell for durability.

Good quality for the price, works as expected and is consistent.

No PWM - guessing IGBT is shorted, as it puts out full voltage but doesn't vary the 'average' with movement of the knob. IF they would have tested it, they would know this - full 'ON' is NOT working as designed...... I still need one, but they can't provide a schematic or say if I can use it with a common ground, so I haven't been able to re-order yet. These are really simple questions if you're a EE or built the circuit - guessing they copied one and don't really know how it works ?? Yes, I do - I am a EE and have built my own - wanted a 'production' level PCB, but may have to make my own again.......