Thanks for all the help DrDiettrich! I really appreciate it 
I found this one on Ali: https://www.aliexpress.com/item/32903346167.html?spm=a2g0o.productlist.0.0.6c383dbfZGQRQt&algo_pvid=e12efac3-cff8-42cc-b595-188dc35bc19e&algo_exp_id=e12efac3-cff8-42cc-b595-188dc35bc19e-0&pdp_ext_f={"sku_id"%3A"12000018579771928"}&pdp_npi=2%40dis!NOK!6.31!6.31!!!!!%402101e9ce16595071456837303eccc3!12000018579771928!sea
Thank you very much for the help, I have bought it now and I will test it also
Welcome. Let us know about the performance if possible.
Of course I will I will also post a link to the project so you can see how it went.
I agree. A lossy H-bridge on a 5-9volt supply should be fine to move the beak of a bird.
A V1 motorshield with L293 chips would be an easy/inexpensive plugin option for an Uno.
Keep that A4988 for more serious work.
Leo..
I bought a 28byj-48 unipolar stepper motor with ULN2003 driver, but i did some adjustments (the RPM is hopelessly low!), first I opened the gear cover and removed the gears so that the RPM went from turtle to rabbit speed (and the torque is still impressive! - 64 steps/rev)
and then I shall do the trick with cutting the middle connection on the PCB board so it becomes a Bi polar motor and test that out too.(Stepper Motor - 28BYJ-48 - StudioPietersÂŽ) I will now assemble the bird beak again and post a video for those who are interested
Cutting is not required and does not help.
Required instead is a bipolar stepper motor driver. Which one do you want to use?
BTW did you see the price of the Polulu stepper driver in #28?
2 motors $0.50, driver $11.50 
An excellent low voltage modern stepper driver is the TI DRV8834 available on a BoB from Polulu
I was thinking about this one (https://www.aliexpress.com/item/32903346167.html?spm=a2g0o.cart.0.0.1f1038dau1bVN8&mp=1) It is a very easy task the motor will be performing
Looks very nice and small! I will def. keep that one in mind for similar projects in the future, thanks for all suggestions and hints, I have learned a lot from you guys about this subject.
This turned out to be a great solution for this interactive painting. I did not do the cut in the pcb, I just took out the gears and it moves just perfect! I used the AccelStepper lib and the function 'runToNewPosition()' was a game changer for my scripts (the original calls from examples didn´t seam to trigger the '.run()' in the loop runtime environment (sorry, I just come from LUA environment) ...but this is damn fun though!
After I am finnshed I start to wonder if I should check out Push/Pull solenoid instead
Does anybody have thoughts (pro/cons) about this ?
Now I have tested 3 different motors but there is still some small noise from the motor but I have never testet the solenoid in any projects. What do you think I should go for?
Thanks guys for all input and suggestions on this project! Here is a video of the final painting: Creepy painting that haunts my dreams - YouTube
Hi @hendrix000007 , I read all this topic and was not clear to me:
Have you managed to make those tiny motors work ? Wich driver ?
I need something very tiny for my project and I think those motors will fit, and I 'd like to make my own circuit (if possible) with the driver, just like I do for the 28byj-48, where I buy only the ULN2003 chip and insert it on the PCB.
I've just bought some of there motors on Ali and I'm prepering myself to have everything ready when they arrive to test.
Thanks.
Hi, I got the motors to work but they donât have much torque power though but if you gear it right it should work nice they are pretty silent too. I didnât use any driver, just used the pin power on the Nano board (I know, itâs dirty but worked like it should! At last I ended up with a push/pull mini solenoid for this project because of the noise from the motors. Now it works perfect and the Painting with the crow and the scary woman are on a art exhibition as we speak
Remeber that the 28byj-48 motor and the driver CAN be altered to go much faster by picking out the cog wheels, the torque is still quite impressive! (see image)
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