2pcs 3 Channel PWM Pulse Generator Signal Generator Module Adjustable Frequency Square Wave Rectangular Wave Signal Generator Duty Cycle with LCD Display 1Hz-150Khz

Good quality module with a nice durable build. It does exactly what it is supposed to do and I didn't have any problems at all. I used this as a stand-alone module to manually dim a 5mm LED and power a 6v dc motor. You can also add a trigger (button/pir motion sensor/photoresistor...etc) to turn the module on and off. I added a momentary button to start and stop the motor. You can also use this precision module for: *Servo Motor Position Control *Pulse Width Modulation for Heating Elements *Tone Generation for Buzzers and *Light Flasher/Strobe to name a few You can attach a fan blade to a dc motor shaft and use it with an oscilloscope for educational purposes. Using a flan blade and motor shaft setup to view waveforms on an oscilloscope helps in understanding the conversion of mechanical motion into electrical signals, the characteristics of periodic signals, and practical applications of sensors and signal processing. It’s a hands-on method that makes abstract concepts more concrete and easier to grasp. Keep in mind: While a PWM module can dim 5mm LEDs effectively, it is not suitable for controlling WS2812B LEDs due to their need for precise digital signaling. For WS2812B, use a dedicated LED controller or a microcontroller capable of handling the required digital communication. You can use this module with basic digital servo motors but you will need to manually change duty cycle for position control. For better servo control, you might want to consider a dedicated servo controller or a PWM driver board designed specifically for servos, which can provide the necessary resolution, accuracy, and power to ensure optimal performance.

Very adjustable.

I think I only cursed once setting this up to drive a pulsing electromagnetic wave. It's an interesting device. If you have an oscilloscope, grab a pair of these. It's a good use of an evening.

Product is different from what I expected -- but that's on me, because I didn't read close enough and understand the description. This 3-channel PWM signal generator can be adjusted to provide different duty cycles on each channel, but the frequency will be the same on all three channels. Note to HiLetgo: If you built and sold a similar product that allowed setting different frequencies for each channel (but the same duty cycle on all three), I think you would sell millions of them. That said, this device worked exactly as described (once I re-read and understood the specifications). Considering all the controls and the backlit LDC display, it is an amazing value for the money.

I just received my HILETGO PCM generator modules and have yet to use it. I needed to find serial control commands for the device. I searched for information on controlling it by its serial port. Others have hunted formation but were not successful. The HILETGO website has nothing! It was a challenge, but I found actual documentation for the HILETGO 3 channel PWM module on the Proto Supplies website. Search for PWM Generator. I am looking forward to using this module to provide RPM control of a wood lathe. Will be using the serial interface control code for this. I gave it a 3 as documentation should be provided with product.... My upgrade that if my use experience is great.

Seems to work OK. You adjust the frequency for all three channels. The channels all rise together and the falling edge is adjustable. Not what I needed, but if this meets your needs it works fine. There are no posts, so you'll need to solder wires or use your own posts. Very easy to use. It looks like there are programming pins but no information on the microcontroller, may be under the LCD.

I use this PWM generator with the Drok 160W dual motor H-bridge. Yes, if you want to program it with the Arduino or another SBC, you will have to hunt around for the code. Here is how I program my Arduino Due in my HB Sat tracking unit. // Freq and the duty cycle are set for Azmuith and Elevation. Note the code below sets up the module for 5,000 Hz at 30% on both motors. My 10rpm worm drive motors operate very smoothly. See my video. The working code below. Put this in your setup area in the sketch Serial3.begin(9600); // Due board D14 & D15 tx/rx to rx/tx on pwm multiple channel generator Serial3.write("F05.00"); delay(100); Serial3.write("D1:030"); delay(100); Serial3.write("D2:030"); delay(100); Have fun! Mike KD0ZW.com

This modules are nifty. They're an excellent purchase at a nice price. Can easily drive PC fans, and other simple PWM motors. That said, don't expect for it to work on two wire fans, nor three wire fans. You need a fan that accepts PWM input. I'm not docking any points for that, because that's not what the product is advertised to do.

PROs: This Generator has 3 channels. Each channel has the same frequency and every channel has own PWM value. CONs: 1) The phase between channels is RANDOM. It's not 0, it's just random if you change PWM of channels or change the frequency, it's somewhat the same, but you can't say exactly the value. I wish it would be 0 fro all channels, but it's not. If you use fixed generator or don't need channel sync - it's not a problem. 2) The generator has UART, but there is no info how to use it. 3) The actual width of PWM pulse depends on the frequency, not dramatically, probably due to the integer math inside the module.