multiple motors on ESP32

[nogks]

Hello,
thank you for the great work here.
I'm a beginner in this area. Is it possible to connect four motors
(Winderoo with OLED screen) to ESP32?
So two L298N.
Can the GPIO25 connection be connected to IN1 and IN3 and GPIO26 to IN2 and In4
(for two motors)?
Does the ESP32 have enough power to supply four motors?
Is it possible to expand the wiring diagram to four motors?
The motors should all run the same.

I hope you can help me

[mwood77]

hi @nogks I think it should be OK if you wire them in parallel - you might need to feed additional power into the L298N though. Have you built your own winders, or are you retrofitting this into a retail winder?

[nogks]

I want to convert an existing watch winder.

[mwood77]

OK - I'd wire them up in a similar manner to this diagram:

• note the battery and the motor wiring.

You'll likely need to supply a dedicated power supply into the L298N as running multiple motors off the 5V output of an ESP32 likely won't be enough juice.

---

I stole the wiring diagram off here: https://www.roboticsinsighto.com/2020/08/how-to-control-motor-driver-with-arduino.html

[nogks]

thanks for the quick reply, I connected two motors for testing purposes, it works.
However, I have problems with the timer.
If I set it to 8 o'clock (560 revolutions), it starts at 21:48 and stops at 00:14. This happens every day.
If I set the timer to 21:00, it starts at 10:48 and stops at 13:14.
So everything works (I still have to test the revolutions) but where does the start date come from?

8:00 is 21:48 , 21:00 is 10:48 . (13 hours difference)

????????????????????????????

Or am I interpreting this incorrectly?

[mwood77]

It appears that there might be a regression (bug) that I need to investigate.

I've been investigating a similar issue in this discussion here: #76 (reply in thread)

[mwood77]

@nogks there was a bug related to the way timekeeping was established. The project has been moved to NTP based timekeeping now ( #82 ), which is more reliable/robust. I've confirmed that the timer begins at a set time, and the cycle completes as expected.

The code in main, or release 4.0.0, is now up to date and includes these fixes: https://github.com/mwood77/winderoo