A fully functional stepper motor focus controller (DIY project) based on Arduino Nano/Uno, with full driver, application and ASCOM support. Temperature probe support, LCD1602 or TFT display options, Bluetooth option, push button options, local/manual or remote control. Supports many different boards, L293D, L298N, DRV8825, Easydriver and more. Tested on Windows, Linux and Mac, Moonlite compatible.
(c) Copyright Robert Brown 2014-2017. All Rights Reserved.
The schematic, code and ideas are released into the public domain. Users are free to implement these but may NOT sell projects based on this project for commercial gain without express written permission granted from the author. Schematics, Code, Firmware, Ideas, Software Applications (Windows and ASCOM drivers), Layout are protected by Copyright Law.
Code or portions of code may not be copied or used without appropriate credit given to author.
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| Website |
https://arduinofocuscontrollerpro.sourceforge.io |
| Tags |
AstronomyHardware |
| Platform |
BSD
Linux
Mac
Windows
|
| Features |
- Software - Windows Application or fully compliant ASCOM driver
- Create using stripboard layout or using PCB design
- Tested with INDI moonlite driver under Ubuntu and Ekos
- Tested on MacBook with TheSky and Moonlite driver
- Manual or full automated remote control (eg focusmax)
- ASCOM driver tested with FocusMax, Nebulosity 4.1.1, APT v3.13, SGP and ScopeFocus
- Use manually via two push buttons for control of IN and OUT position
- Manual zero position (hold down both push buttons for 2 seconds) or via application/ASCOM driver
- LED indications for IN, OUT (optional) and external PWR
- LCD1602/I2C display (optional) for positional information (Current and Target positions)
- Supported Driver Boards - ULN2003, L293D, L298N, DRV8825, EasyDriver, ST6128, RAPS128
- Temperature probe support (optional - DS18B20 accurate to 0.5 degree)
- Reverse voltage protection on 12VDC input
- Option1: 28BYJ-48 Stepper Motor and ULN2003 driver board using Arduino Nano
- Option2: NEMA17HS15-0404S-PG5 Stepper Motor and L293D Motor Shield using Arduino Uno
- Option3: NEMA17 and DRV8825 driver board - up to 6400 steps per revolution!
- Option4: NEMA17 and EASYDRIVER board - up to 1600 steps per revolution
- Specify Reverse Direction, Coil Power, Stepping mode in either ASCOM or Windows application
- Important focuser parameters stored in controller EEPROM and retrieved when driver/application connects
- Full build instructions, diagrams, test scripts, comprehensive manual, bracket design and more
- Detailed instructions on initial setup, operation and selection of stepper motors
- Full parts list with suppliers, costs and build options
- Arduino code, ASCOM driver and Windows Application support for all build options
- 04-Nov-2014 Support for the DRV8825 driver board, 1.5A and microstepping to 1/32!
- 05-Nov-2014 Support for the EASYDRIVER v44 driver board
- 24-Nov-2014 Support for L298N driver board
- 10-Jan-2015 Second ASCOM driver added to support a second focus controller
- 04-Mar-2015 Rotary Encoder option added for DRV8825 and Easydriver builds
- 07-Mar-2015 IR Remote control option added for DRV8825 and Easydriver builds
- 01-May-2015 A4988 Driver Board support added
- 08-July-2015 Bluetooth Wireless adapter HC05 option added
- 01-Oct-2015 PCB Layout added DRV8825_HW203
- 11-Oct-2015 ST6128 Driver Module and RAPS128 Driver added
- 01-May-2016 Jogging Control added
- 09-Sept-2016 Language support added
- DO NOT DOWNLOAD SOFTWARE FROM OTHER SITES AS AN EXE/ISO/ZIP FILE - THESE FILES ARE NOT SUPPORTED AND MAY CONTAIN MALWARE
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