Hiya, Wow there’s a lot going on here. Meanwell drivers do pwm, I looked at that digital pot board too but I decided to use 0-10v pwm for everything. You can apparently write code to create the pwm signal manually but I don’t think it’s recommended. It’s better to have an actual pin. Ir arduino MCU ...

I think so yea, you should make sure you use a volt meter to check the output. You might have to give it more or less than exactly 10v power input to get a proper 10v output signal. I’d just check the output leads to be sure. There is another one that is designed to provide 0-10 from a power supply ...

This dude is a legend

Looks pretty cool - damn all esp32’s have Bluetooth ?!

From what I know you need some circuitry to reverse polarity of the circuit. I am not an expert but there are chips called HBridges that are designed for controlling motors forward, backward, speed and stepper motors. You can search Amazon for HBridge and you’ll find modules with different hbridge c...

You can get dimming from 0-10v pwm. So take an arduino or MCU hook a wire from GND and one of the PWM pins from the MCU/Arduino to this little board WOWOONE 1PC PWM to Voltage Module 0%-100% PWM Converted to 0-10V Voltage Suitable for Signal Interface Switching for PLC or Other Industrial Control Bo...

Well it’s been working using that yellow/blue board without speed control. This is great.

That was an interesting learning experience.

Hey again.. well.. this is something. I wrote a sketch before that allowed me to calibrate the sensors by pressing a hardware button. I can't for the life of me remember what code I used. The instructions say PH:cal,mid,7 for example, but when I add that to my sketch I get "cal was not defined in th...

I wanted to do something quick, so I bought one of these from Amazon: https://m.media-amazon.com/images/I/614Cr8MNG9S._AC_SL1200_.jpg https://www.amazon.ca/NUOYI-MCP23017-Expansion-Board-interface/dp/B095WWBJ8Z/ref=sr_1_1_sspa?dchild=1&keywords=mcp23017&qid=1633488306&sr=8-1-spons&psc=1&spLa=ZW5jcnl...

Well so I disconnected the dfrobot drive for now and have this four channel mosfet board hooked up. Till try out the gpio expander later today with it and see. It’s essentially what I want just was trying to avoid the extra pwm wires but no big deal. If it works I guess I’ll just not use the dfmotor...