DG's Hardware board

We wanna build this 360 degrees pointer which can point out the ISS position.
Thingiverse: https://www.thingiverse.com/thing:4700114
Instructions: https://www.instructables.com/Internati ... n-Tracker/
Or any other (known) object in the sky?

First we have to see how much it cost.

Supplies
ESP32 microprocessor in development board format

0.91" OLED display 128 x 32
2S li-ion battery cell charger protection board (7.4v)
MP1584EN DC step down power supply
Veroboard (25 x 13 holes)
Right angle headers (2.54mm pitch)
Female pin headers for PCB (2.54mm pitch)
18650 li-ion cells x 2
18650 cell holders x 2
28BYJ-48 stepper motors x 2
ULN2003 stepper motor driver boards x 2
60002RS Bearing (10x26x8mm)
6 channel slip ring12.5mm diameter body, 24mm diameter top ring
Rocker switch KCD1-104
Barrel jack socket 2.1mm
Dupont jumper wires for connecting the circuits
M3 x 16 Countersunk machine screws x 4 (for base plate)
M5 x 20 Dome headed machine screw (touch switch)
M6 washer (touch switch)
M3 x 16 Dome headed machine screws x 2 (stepper motor)
M3 x 16 Countersunk machine screws x 4 (spindle plate)
M3 x 10 Dome headed machine screws x 2 (Dome locking)
M3 x 8 Countersunk machine screws x 4 (Inner plate)
M3 x 8 Dome headed machine screws x 4 (veroboard and stepper driver on inner plate)
M2 x 4 self tappers x 3 (slip ring)
M3 x 10 Dome headed machine screws x 6 (stepper motor and driver board on rotating platform)
M3 x 12 Countersunk machine screws x 4 (stepper motor and driver mounts to rotating platform)
M3 nuts x 8