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

The media could not be loaded. 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 Buzzersand *Light Flasher/Strobe to name a fewYou 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.

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.

For what I'm doing this is great. Cost is outstanding and does a very good job.

These devices are well made and work quite well.I purchased two units to design servo coils, and they were perfect.Very well done!

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.