PWM Motor Driver

Other Hardware Motors, Mechanics, Power and CNC
1

¡Hello!

I am trying to implement a control system for a massage chair. This equipment has two DC Motors, but they work with 110VDC, so I’ve been thinking to use a ESP32 with a PWM output to control the power of a Motor Driver, but I would like to know which Motor Driver is recommended to use with this board or is anyone had been in this situation?

I found this:

But don’t know if this one works with an ESP32

So any comment would help

Thanks

2

Try to find technical documentation at the producer's site.

3

Have You verified that the driver can handle that motor current?

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4

You would need additional hardware, such as a DAC.

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5

You could use pwm to 0-10V converter like this to control that Daedalus:
https://aliexpress.com/item/1005006582755517.html
But you need also min 12V power supply.

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6

I tried, but I does not find too much information about that motors. The label on it says Ou Yuan DC Motor 110V. If you find something please let me know. :folded_hands:

7

Got it! That is a good detail, because the ESP32 gives me just 3.3V right??

8

Not likely because of the information You give.

9

That device need a min of 4.5V so you will need a level translator to use it with a 3.3V ESP or use a 3.3V DAC

10

Right.
I have used that module with Esp32 without problems, but like jim-p commented above, description of that module doesn't confirm compatibility with 3.3V PWM signal.
To be sure, better to pick converter that clearly confirms that.
https://www.aliexpress.com/item/1005006246726187.html

I don't know how you want to control your setup, but if it fits your use case, I can recommend Shelly dimmer 0-10V Gen3. More expensive solution, but certified European product with lot of features. Esp32 on-board.

11

Well this is confusing:

image
image590×512 93.2 KB

Maybe it can use PWM

12

If it's any help, I use an MIC4426 MOSFET gate driver (DIP-8) to drive a MOSFET.

The MOSFET switches a 240-V AC/DC universal motor powered by 160-V DC PSU (transformer-bridge-large capacitor).

Arduino Nano provides the PMW output and a potentiometer provides the 0-5 volt control signal. The MIC4426 needs 12-V DC to work reliably as I recall.

Very simple arrangement, nothing gets even warm, and control right down to a crawl.

Costs are minimal, the main cost being the transformer.