ZM-1, a 3D printed small equatorial mount for astrophotography

ZM-1, aka Monique l'aventureuse des étoiles

Approximative cost : 350€ (with printed parts and electronics)
Weight : 1.6 kg
Usable charge : TbD, 3kg expected

BoM

3D parts

• PETG parts (60g) : carter + support_batterie
• PC-CF parts (400g) : base, bas, gauche, central, droite,

Mechanics

• stepper motor x2 : https://www.omc-stepperonline.com/nema-17-bipolar-0-9deg-11ncm-15-6oz-in-1-2a-3-6v-42x42x21mm-4-wires-17hm08-1204s
• strain wave reducer x2 : https://fr.aliexpress.com/item/1005005537731414.html
• gear B2GT-64T-5B-9 x2 : https://fr.aliexpress.com/item/1005003157185382.html
• gear B2GT-16T-5B-6 x2 : https://fr.aliexpress.com/item/1005003157185382.html
• belt 2GT176 x2 : https://fr.aliexpress.com/item/4000307124092.html
• ball bearing 6005-26-2RS x1 : https://www.123roulement.com/roulement-palier/roulement-bille/simple-rangee/6005-26-2rs
• ball bearing 61812-2RS x1 : https://www.123roulement.com/roulement-palier/roulement-bille/simple-rangee/61812-2rs
• ball bearing HK1410 x2 : https://www.123roulement.com/roulement-palier/roulement-aiguilles/douille/hk1410-zen

Electronic

• TeenAstro Redux (to be released) it can works with onstep, but you need to adapt case to fit your board
• ParkSide performance battery

Screws

Flat head

• M3x6 : x8
• M3x30 : x8
• M4x25 : x8
• M4x70 : x2

countersunk screw

• M3x8 : x1
• M3x20 : x1
• M4x12 : x1
• M4x25 : x8

brass insert

• M3 4x5.6 : x10
• M4 5.6x8.2 : x15

Aluminium CNC part

• Platine Vixen

sources files for ordening from https://www.JLCpcb.com