DIY OnStep Telescope Controller Enclosure + Motor Mounts (ESP32, TMC2209, NEMA 17/14)
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ESP32 + TMC2209 OnStep controller enclosure and NEMA 17/14 motor mounts for a DIY tracking telescope mount. WIP.
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- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial
Parts for a DIY auto-tracking telescope mount running OnStep, built around a Celestron AstroMaster 130EQ. The controller enclosure is designed for an ESP32 on a screw-terminal shield, three MKS TMC2209 driver modules and an LM2596 buck converter, with an I2C OLED screen lid. It has heat-set insert standoffs, internal cable pass-throughs and rounded external edges. PARTS: ESP Main body (L/R) and ESP lid (L/R) make up the enclosure. ESP screen lid holds the OLED. Mount (L/R) connect the enclosure to the Celestron AstroMaster 130EQ mount. Nema 17 Motor Top/Bottom hold the RA and DEC motors (16T to 60T belt reduction). Nema 14 Mount (L/R) hold a NEMA 14 focuser motor. PRINT SETTINGS: PETG, 0.2 mm layer height, 25% infill (gyroid), 4 wall loops so the heat-set inserts grip well. Designed in Fusion 360. STATUS: work in progress. The enclosure is built and in use. The motor mounts are new and not yet fully fit-tested, so check your own motor and board dimensions before printing. Feedback welcome. LICENSE: personal use only. Please do not sell this design or prints of it.