I want to build an onstep for EQ5, need some help

[Lotinsh]

Hi, I'm trying to make an onstep for my EQ5 mount, so far I've gone with the blue pill option, I have the PCBs (empty) now I need all the parts. I think I have gotten all the necessary parts except now I'm kind of stuck with the motors. What motors do I need and what specifications? Also, would these do?: https://www.aliexpress.com/item/32572890101.html?spm=a2g0o.cart.0.0.720c38datCrlqS&mp=1 

Once I have chosen the motors, how do I figure out what pulleys and belts I need? 

So far I'm following the onstep bluepill guide for the electronics and stuff: https://onstep.groups.io/g/main/wiki/6408

Following this guide: https://astroeq.co.uk/tutorials.php?link=custommotors Are these the correct pulleys for my mount?: https://www.aliexpress.com/item/1005004019238577.html?spm=a2g0o.cart.0.0.720c38da2Bn1qL&mp=1 and https://www.aliexpress.com/item/1005002226516848.html?spm=a2g0o.cart.0.0.720c38da2Bn1qL&mp=1

Sorry if this is a dumb question, it's hard for me to wrap my head around what I'll need and how it will all work later on, so far I hope that I will have everything and I won't need anything extra that hasn't been mentioned.

Any help is appreciated, as I don't want to accidentally order the wrong parts.

Thanks.

 

Edited February 16, 2023 by Lotinsh

[fozzybear]

Have a read of this on the onstep.io forum for the pulleys used on an eq5 mount https://onstep.groups.io/g/main/files/Documents and Guides/OnStep-W32-CNCV3-EQ5-Build-Instructions.pdf

there is BOM on page 5. Albeit this is for a CNC3 build with a Wemos D1 But the parts listed should work you just need to input the gear ratio into the configurator then upload to Viagra I mean Blue pill. 

Any questions ask on the Onstep Forum as very friendly.