Frecuencia de 1Hz-150KHz del módulo del generador del pulso/de onda cuadrada de 2 canales 5V PWM

Quality construction and works well. Fast delivery all good

The product worked but the advertised frequency is not what the product puts out. I see 100 Hz to 100kHz on my oscilloscope. Unless this product was not programmed correctly before shipping it does not work for the frequency I need which is between 47Hz to 63Hz. Can the seller update frequency output parameters so others don't buy if needing under 100Hz with a 50% duty cycle? Or can the seller provide instructions to get the frequency to adjust down to 1Hz?

- Well Manufactured 2 Channel square wave signal generator – NO DATASHEETThe website description is accurate and this module works well for my project. Because the product is a good price and does what it says, it deserves a full 5 star rating. I was temp

The product works exactly as advertised. It will help jump start my "project" before I roll my own.Update: The seller does have a website with helpful information that I was unaware of when I wrote this review. No where to go up from 5 stars so my rating stays the same.I wish it had some basic documentation....specifically if I wanted to solder it down to a board for use, it would be nice to know what I am exactly connecting to ....input/output schematics without giving away the innards, if they are worried about that.Here is the pros....So its pretty accurate. Performs its stated task well. I didn't see a crystal, so I am not sure how that is.The crystal may be under the LED display....as well as the crtical "innards" making it function.Frequency and duty cycle are independently adjustable.User interface is somewhat intuitive, but you will have to figure it out by playing with the push buttons. Update: Look for sellers link to his/her website on this page.Here are the negatives.1) Zero instructions…. Update… I found them.2) No schematics....at least some interface info would help...don't want to blow it up. Still true.3) USB connector for power...ok fine. What if I hook in my own? Update: Seller has some info.4) You will need to solder to it to get signals out.....so you will need soldering skills. No biggie for me, but letting you know.5) update: you can program it through a serial interface. I haven’t tried it yet, but this is a bonus I was unaware of.Here are the unknowns.1) I didn't quantify jitter if that is important to you...you are on your own. Its not for me.2) I didn't quantify drive strength of the outputs. That is important to me, but I can always buffer the outputs. Update. I guess they can do 30mA.

Great readout and two outputsI use this for bench testing auto ECMsOne output is RPM and the other is vehicle speed

Running this on a Daytona Velona speedometer #86210 / #86209 to rack up miles so it matches the miles on the bike when I install the new speedo. i have duty set to 50% and frequency 1 set to 195, it is running the speedo at a steady 145mph. I powered the board with a 5v android charger cable, then hooked up pw1 output from board to speedometer signal input, and ground output from board to the same ground as my 12v source for the speedo.be sure to FIRST boot up the board using the 5v usb input. Then reduce pw1 frequency to zero. Then, connect a 12v batter source to speedo and power it up. Then, connect pw1 and ground from board to the speedo's signal wire and ground wire. Then raise the pw1 frequency and you will see the speedo read mph and start racking up miles. Adjust pw1 up or down as needed.If you need a good proximity wheel sensor for your aftermarket electronic speedo get this one on amazon it works great to pick up bolt heads on wheel or brake rotor, outputs a nice clean square wave pulse signal: https://www.amazon.com/gp/product/B07H6CHFB8/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

So far this seems to be a great little square wave generator.You can adjust the frequency and the duty cycle (how long the pulse stays "high").I am going to use it to control the idle speed on a 1984 Nissan Sentra by controlling the idle speed actuator "on" time.I have to run the output to the base of a 2n2222 transistor to get a 300 ma output for the idle speed actuator solenoid.This way, I can adjust the idle speed for warm up mode after first starting the engine and then speed the engine up whenever a load is applied to the engine such as when I turn on the headlights, etc.It is an experimental thing since some parts are no longer available for this car soch as a vacuum control modulator.This is a great little circuit.I couldn't build the circuit myself for this price.