Nema17 ?

#1 · 2021-09-29, 09:21

Just wondering if anyone could link to the steppers used the build sheet specifies a 32mm but for the life of me I can’t seem to find one in Canada that resembles any thing close if some one could share what they are using perhaps I can look up the specs / drawing and find a equivalent

thanks so much for the time and for all the hard work in the project look forward to the build 🙂

have a few future ideas i would love to test once I get a prototype working

cheers,

james / Ve6btc

EA8CXN@ea8cxn

#2 · 2021-10-20, 09:24

In the same condition as you, I'm looking wich NEMA characteristics.
I see on the SHOP that the meassures are 42x42x30, I find some 42x42 but 38...

Danaco@diego

#3 · 2021-10-20, 11:15

Quote from EA8CXN on 2021-10-20, 09:24

In the same condition as you, I'm looking wich NEMA characteristics.
I see on the SHOP that the meassures are 42x42x30, I find some 42x42 but 38...

The maximum size that possibly could fit on the MK1 azimuth is a Nema17 height of 34mm

The motors originally used are called 17HS12-1204S and if you are resided in the european union I have som left in stock that I can sell, please contact me by mail to satran@danaco.se in such case.

Most importantly is that the internal resistance does not differ too much from 2.8Ohms since a larger resistance would make the motors too weak to handle an antenna. Larger resistance = less amperage = less torque.