The Adafruit library works with the MC23008, if you're using the PCF8574, use this library:

Hi, One thing I would like to add, You can protect against DC spikes by putting a general purpose diode across the DC input to the motor. This will li...

Hi Chuck, By what you've said, I think your ESP is fine, if your code compiles and loads to the module your issue is most likely the incompatible came...

Hi, I second that advice.. You can find the old National Semiconductor datasheet at Jameco here: The datasheet is very informative gives quite a few ...

Hi, I have a little advice for you that comes from my own personal experience and a lot of trial and error. When using libraries with peripherals in t...

Good Evening Ladies and Gents, I'm a noob here on this forum. I have really enjoyed the DroneBot series of videos on YouTube and thought it would woul...

Sorry I think I posted under the wrong thread... 🤪

Logic level shifters are your friend :)

Welcome Dallas-Fort Worth... As an Outdoorsman... DFW is Dept of Fish and Wildlife... :) LOL

Hi, I was looking through this thread and I thought maybe I could add something... 1. I understand you tested your active components, transistor hfe ...

@dronebot-workshop Good Afternoon Bill, Another very interesting chip on this list is the CD74HC4067 (16CH Analog MUX) I think this one is worth inves...

Good Evening Ladies and Gents, I'm a noob here on this forum. I have really enjoyed the DroneBot series of videos on YouTube and thought it would woul...

One more thing... Bill has an excellent troubleshooting video in his DroneBot YouTube series.... ;)

Hi, I don't have any experience with that particular module... That being said, I have used other I2C 'things' using the Arduino IDE.. You have probab...