OG star tracker V2
by Ondrag s · via Printables
| Format | STL |
| Category | Organisation |
| License | CC BY-NC-SA |
| Triangles | 160.3k |
| Uploaded | Dec 9, 2025 |
⬇ 5.9k downloads
❤ 1.0k likes
👁 48.5k views
Description
You can now buy the kits and parts at OG star tech. Meet OG Star tracker - The ultimate diy star tracker DIY – Build Your Own Tracker ! So, you want to build your own tracker. Then you are at the right place. OG star tracker is a perfect tracker and project for beginners and experienced astrophotographers. Combining ease of use with high precision while being open source. Key Features: Lightweight & Portable: Weighs just 1.4 kg High Accuracy: Periodic error of just 10″–15″, allowing long exposures without an auto guider. Modular & Customizable: Swap between a laser and polar scope, add a ball head, or even upgrade with a manual declination axis. Easy Polar Alignment: Simply aim the laser at Polaris—no need for a polar scope. Advanced Camera Control: Built-in intervalometer port with dithering support for noise reduction. Upgradable: Soon a manual go-to upgrade will be released. Open and free to share modify and make. You can now buy the kits and parts at OG star tech. 📷 Image redacted — claim this model to add your own media Shot on OG star tracker 📷 Image redacted — claim this model to add your own media 30s exposures 2.5h of exposure time. Join our comunity Discord : https://discord.gg/dyFKm79gKJ QQ: QQ交流群 Built instruction Github : https://github.com/OndraGejdos/OG-star-tracker- List of parts : https://docs.google.com/spreadsheets/d/1V04zjGSebJ5LQbSmzs-h86T6Z9E3HwVkMj2nuVYQzYs/edit?usp=sharing My website : http://www.ogstartech.com List of parts for 3d printing : https://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharinghttps://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharing Assembly guides: Printing instructions Recomended print settings All parts are printed with 100% infill except a few parts. Print from cheaper abs/asa material: Main gearbox , Gearbox part 1 bearing holder, Tightener, Big pulley, Camera holder, middle holder, belt cover, tightener, tightener bottom, bearing holder, bearing holder cover, bottom bearing holder, M5 knob big, Laser holder 14mm, tightener for polar scope laser, polar scope holder eq5, middle holder bottom, stationary part with 3 8 threaded insert, m5 knob 2x, m5 small knob 2x Multicolor prints: Main gearbox - 2x 3 white dots for tensioning, logo, bottom text arc left - white numbers of latitude, print lying on bed arc right - white numbers of latitude, print lying on bed (The engravings are very shallow) turn on ironing on top layers on these models: Middle holder bottom Stationary part (Use 4 walls) Use better material abs-gf/asa-cf Main top part, Main bottom part, Arc left, Arc right Special printing parameters: Main pulley - use random z seam and scarf joint seam Stationary part (Use 4 walls) Parts that you can print with 50% infill Middle holder bottom, Stationary part (use 4 walls) , M5 knob, M5 knob big, Side M3 knob You can select files which you need to 3d print here : https://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharinghttps://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharing For heavy duty version Use allways 100% infill Firmware You need to chose firmware based on your stepper motor. If you have stepper motor which has 400 steps per revolution chose : firmware simple for Arduino nano 0.9° . If you have 200 step per rotation stepper motor use : firmware simple for Arduino nano 1.8° . If you want to use different Arduino you might want to change out pins in code. https://github.com/OndraGejdos/OG-star-tracker-/tree/main/Firmware Or you can use our newly developed pcb to unlock more features. https://github.com/OG-star-tech/OG-star-tracker-/tree/main/esp32_wireless_control/firmware Usage In the attachment is an instruction manual. Let me introduce you to OG star tracker V2 Specifications: Weight: 1.4 kg Max Payload: 4 kg /6kg for heavy duty version Max Focal Length: 400 mm Control: Via app or phone web app Power: 5V 1A power bank Stepper Motor: High-accuracy 0.9° stepper motor with TMC2209 driver Build Material: ABS-GF and ABS Dimensions: 17.5 × 19 × 11.5 cm Legacy version here : https://www.printables.com/model/1462536-og-star-tracker-legacy-versionhttps://www.printables.com/model/1462536-og-star-tracker-legacy-version
Originally published on Printables