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Message #24181

PhillyNJ

Posts: 3

Hi,

I am trying to use a uln2003 stepper but its currently not working. I have tested the stepper with the Arduino Stepper Sketch and confirm everything is wired correctly and working. I am trying display Airspeed. Here is how I have it configured.

https://i.imgur.com/3G5pTJZ.jpg

Stepper Pins
IN1 -> 2
IN2 -> 3
IN3 -> 4
IN4 -> 5

5v and power are connected.

Thank for the help

2021-10-31 20:19

Message #24182

PhillyNJ

Posts: 3

So it appears to be working on a Mega and not an Uno. I guess it’s not available on the UNO’s firmware yet.

2021-10-31 21:10

Message #24183

StephanHo

Moderator

From: EDDG, Germany

Posts: 1867

Supporter

Hi PhillyNY,

welcome to MobiFlight!

Yor're right, the stepper does not work in the right way with an UNO. UNO is since a longe time only experimental.
But times are changing and an new firmware for the UNO is in the pipeline.
So be so kind and use your stepper with a mega until the new firmware is ready.
Thank you.

Grüße,
Stephan (Time: UTC+2)

2021-10-31 23:11