Equatorial mount for DSLR

thingiverse

This is a remix of the equatorial mount of SimonRob. Check out his instructables for more details on how to assemble https://www.instructables.com/id/Equatorial-Mount-for-DSLR/ Changes: -Changed motor to nema 17 -Added another reduction (4:1) -Changed to chevron gears -Replaced all screws with M3 (was M2.5) The reductions are 6:1 then 4:1 so with a standard 1.8deg stepper you get 4800 steps per revolution 76800 steps per revolution with 16 microsteps 1228800 steps per revolution with 256 microsteps (close to 1 arc-second) I have assembled the mechanics but I have not yet done the electronics or tested it yet, I will use an Arduino with a TMC2208 driver. I will make the following changes someday: -Add clutch mechanism to “support”. Now the only way balance the support/camera assembly is to loosen the setscrew witch is not ideal. -Change the endstop from the manfrotto mount to the “body” to the large pinion does not need to be removed to separate the two. -Change the main axis to diameter 20x10 aluminum tube with 6804 bearings (20x32x7). It’s a pity the pinion/motor assembly is so rigid without play but there is a ton of torsion in the 10mm tube. Edit: Only two motor screws can be used. You will need a ball tip allen key for the large pinion set screw. Edit 22/09/2020:Addes schematic from https://www.thingiverse.com/andrew14/ using two 18650s and a TMC2208 his code is here https://drive.google.com/file/d/1KimSNu2GnHwaGV6QbWR6xXsA_qy4-2Uu/view?usp=sharing