28BYJ-48 Stepper Motors 2 x ULN2003

Other Hardware Motors, Mechanics, Power and CNC
1

Hello, folks,

for a project I want to control 2 stepper motors 28BYJ-48 with 1 x ULN2003 each.

The motors should rotate in opposite directions - one on the left one on the right!

Does anyone have any idea if you can do this with 4 outputs from the Arduino?

Is it possible to connect the 2 x LN2003 in parallel to the 4 required outputs (Arduino)?

Then there is the question whether I can change the order of the connection for the 2nd ULN2003,

to maintain the opposite direction of rotation????

I didn't find anything on the net or searched wrong (beginner at Arduino)

Thank you. I'll take care of it.

Ralli

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2

Perhaps you can use a shift register to increase the number of ports, please, search for SN74HC595 (control: 3 wires), another possibility is the expander PCF8574 (control: 2 wires).

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3

In parallel they will rotate to the same side, but if the order of the wires is reversed, they may rotate in the opposite direction.

In this case you don't need the PCF8574 or 74HC595, just reverse the motor wires (or ULN2003 input control wires)