Best Electrical Motor Controls in 2020

High Torque Nema 23 CNC Stepper Motor 114mm CNC Mill Lathe Router Review:

Nice motor for the money. Ezcnc builds professional cnc machines and primarily uses high end motors such as Oriental motor but from time to time we use these on "Z" axis. They have held up well. Construction and finish is nice. Wires are a bit on the low end and they don't hold up to heavy cycling. Rotor inertia is hign but expected on a low cost motor. I recommend them for light loads where torque doesn't go past 50%of rated. They fail fast when pushed. For higher applications, stick with the high end motors. For hobby stuff, these are great starter units.. only drawback is they are very rough even at high pulse rates with anti resonance drives.

RioRand 7-80V PWM DC Motor Speed Controller Switch 30A Review:

Used the speed controller to slow down our kids power wheels after converting it to run on 18 volt Milwaukee batteries. The runtime is amazing for anyone wondering. The speed controller allowed us to tune the speed of the motors back to an appropriate level, first we slowed it way down to allow our child to get comfortable driving, then turned it up a bit. No issues with heat buildup or the adjustment nob slipping. Motors and speed controller remained cool to the touch even after prolonged use. The adjustment nob does turn easily, but hasn't moved even when the power wheels goes bouncing through the grass. Great product!

iPower GLDUCTAPE50 2 Inch 55 Yards Professional Grade Aluminum Foil HVAC Ducting Hose Repair Adhesive Tape, 50m, Silver Review:

Came with pre-filter. Didn't buy for grow room. Bought for a smoking household in apartment with pets and mold and other random smells. Don't have it hooked up the way I want I'm still waiting on ducting. Pre-filter looks good and durable for washability. Will come back for full review when I can give better opinion. Came with all the screws and no dents........Update has been wonderful kills all smells have washed the prefilter once or twice but would suggest changing after one wash or every year or two. It has done exactly what I bought it for. Will buy a new one when this one stops scrubbing the air.

KB Electronics 8811012 Solid State Variable Speed AC Electric Motor Control, 5.0 Max amp, 115V, # K177-1005 Review:

This device uses a triac type scr to control the speed of specific types of motors. Manufacturer's spec sheet lists shaded pole, permanent split capacitor, and universal (AC-DC) motors. This covers most small air moving systems. Since it's rated 2.5A maximum you'll want to also check that your motor's maximum current requirement falls below 2.5A @125VAC. I'm using it on a very low wattage universal motor drawing about 0.12A and it works perfectly. I didn't even need to adjust the trim pot for the low speed setting.

Knowing the type of motor and its current requirements is important if you want good speed control over the full range of settings. For instance, the small motor I mentioned above will NOT operated properly on the larger 15A maximum speed controls listed. With those controls the motor only runs when the control is getting near its maximum setting.

Here's the manufacturer's data sheet for those wanting more detail: [...]
If Amazon won't let me post the web address, just go to kbelectronics - it's a dot com site.

RioRand RR-PWM-15V Low Voltage Dc 1.8v 3v 5v 6v 12v 2a Motor Speed Controller Pwm, Review:

I am using this for my Monoprice Mini Delta which had a very loud fan at the base of the printer. With this I can control the fan speed very well. I actually just have it where the fan is at a low speed, and the PWM just tossed in with the 3D printers' electronics (I made sure it would not short accidentally) and have not modded the exterior case where I can just adjust the speed on the fly. Maybe in the future.

KB Electronics 8811006 Solid State Variable Speed AC Electric Motor Control, 2.5 Max amp, 115V, # K177-1002 Review:

I have a Kozy Heat 961 direct vent fireplace that I bought used a installed few years ago. The fan worked well, but was very loud (full blast). I was not given the fan speed control, and I had no idea it was supposed to be there. I just connected th AC to the fan via the thermal switch, and it ran fine (but loud). After researching the installation manual a bit more, I was able to find the part number for the Kozy Heat controller, and even found one available online. I chose this one instead based on it being about 1/3 the price, and per Q&A info, it should work with my fan (0.8A).

The installation is simple. I installed mine in a plastic 'wall outlet' box sitting on the metal plate with the fireplace controls. Yes, there are only two wires, so I installed it in series with the 'hot' lead on the way to the thermal switch. Although the dial is a bit sensitive, I was able to easily adjust the fan to a more reasonable (about half speed). I have perhaps the first half of the 'dial' before the fan stalls.

The (small) installation manual is very basic so don't expect it to be very helpful. Since my install was internal, I chose to use a plastic cover plate instead of the metal 'Vari-Speed' cover since I didn't want any metal to metal contact and potential rattling.

Qunqi L298N Motor Drive Controller Board Module Dual H Bridge DC Stepper For Arduino Review:

I almost gave this 3 stars, but because of its reliability, I decided on 4. The thing works great with raspberry pis. I've used these to control motors and LEDs (they output PWM afterall) and they work great. The build quality is questionable on some of them, so I think QC is a bit lacking, but they all seem to work. The only real complaint I have is with the 5v DC regulator. A common use case for these is to drive motors using micro-controllers (or raspis) and use the 5v output on these to power the micro-controller. That works fine, but the regulator gets very hot when doing that regardless of the current draw. I haven't confirmed this, but my suspicion is that the 5V regulator isn't a switching regulator, and is just burning off the voltage difference between your supply and 5v. This is an odd design choice considering that the whole board itself is a form of switching regulator (PWM). But, as I said, the reliability of these helped me overlook that. I've put these in unconditioned spaces without any overheating issues (they get scorching hot, but keep on ticking). Would recommend for any hobby or small electronic projects (just don't burn yourself if you use the 5v output).

Qunqi 2Packs L298N Motor Drive Controller Board Module Dual H Bridge DC Stepper For Arduino Review:

This device was used to drive the motors of the R/C car I build using an Arduino. Here is the list of parts:

x1: 5pack 9v Battery Clip with 2.1mm X 5.5mm Male DC Plug for Arduino by Corpco
x1: 2 of SMAKN Fr4 Ky-023 Joystick Breakout Module Sensor Shield for Arduino Uno/arduino UNO R3/arduino 2560/arduino 2560 R
x1: Qunqi 2Packs L298N Motor Drive Controller Board Module Dual H Bridge DC Stepper For Arduino
x1: Multicolored Breadboard Dupont Jumper Wires – ALLUS J7011 120Pcs 3in1 Ribbon Cables Kit, Male to Male (M/M), Female to Female (F/F), Male to Female (M/F) for Arduino and Raspberry Pi
x2: Arduino Uno R3 Development Board, Kit Microcontroller Based on ATmega328 and ATMEGA16U2 with USB Cable for Arduino, Original
x1: 10pcs Arduino NRF24L01+ 2.4GHz Wireless RF Transceiver Module New
Sold by: Deegoo-FPV
x1: 6 AA Battery Holder With 2.1mm x 5.5mm Connector 9V Output 2 Pack by Corpco

Casolly Variable Fan Speed Control for Inline and Duct Fan Adjustable Speed Controller Review:

I purchased this unit to control the temperature of a round bottom flask in a heating mantle, after reading the product description that states it is "widely used for controlling heating elements." Heating mantles often have built-in controllers, but when they don't a controller can run into the hundreds of dollars to perform the same function (triac AC power control, same as a wall dimmer switch). It is not clear from the Low-Medium-High markings in the variable mode that it is continuously variable. As the unit was received it only adjusted down to about half power instead of fully off (easily seen when powering an incandescent lamp). Being an electrical engineer, I planned to modify the circuit to do that, but I didn't need to because it already includes a tiny trimmer potentiometer on the back side of the circuit board (only seen as a hole that receives a plastic trimmer for adjusting). Of course this violates the standard warning that only a certified technician is qualified to work on it. I think it would be beneficial to offer a different version of this same controller that isn't intended for fans but only heaters and lamps that adjusts all the way down to full off.

Onyehn 2Pcs 1.8v 3v 5v 6v 7.2v 12v 2A 30W Low Voltage DC Motor Speed Controller PWM 1803BK 1803B Adjustable Driver Switch 2 Pack Review:

I am really impressed with these little PWM controllers, especially for the money. The stepping is nice an linear. The rotation is smooth. The hookup is labeled well and very straightforward.

The off feature is great. The knob is a press-fit, and the unit includes a nut and washer - just drill a 1/4” / 6mm hole in your faceplate and you can bolt it in. In case it wants to spin, there are also holes in the circuit board that you can use with standoffs to bottom-mount.

The power light is a great addition, too. You can’t beat the performance and features at this price point!!