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myFocuserPro2 A DIY project - stepper motor focuser solution based on Arduino

Author Robert Brown (c) 2014-2024 Date March 19, 2014-2024 All rights reserved
This project is protected by International Copyright Law.
Permission is granted for personal and Academic/Educational use only.
Software distributed under MIT License https://opensource.org/licenses/MIT

CONTRIBUTIONS

Please contribute to the ongoing development of this project via PayPal by sending your donation to user rbb1brown@gmail.com (Robert Brown). All contributions are gratefully accepted.

STARTING POINT - PLEASE DOWNLOAD THE PDFS

https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/Documentation/

OVERVIEW

This is a DIY Stepper Motor Focuser Solution based on an Arduino, bread boarded and enclosed in a project hobby box. (If you have a DC motor and need a DC controller there is also a similar project on Sourceforge).

Full ASCOM drivers including Temperature Compensation and Stepsize support
Windows Application programs
Numerous options and driver board support
Full schematics, Stripboard layout, test programs, build instructions
Comprehensive and very detailed setup instructions
Build a professional, well supported stepper focuser for low cost
Full Arduino Firmware code for each build option
BlueTooth HC-05 support

SPECIFICATIONS

Control focuser using either ASCOM driver (fully ASCOM compliant) or Windows Application
Windows Application for manual control of focuser
Dedicated ASCOM focuser driver (and 2nd driver for an additional stepper motor)
Works with FocusMax, Nebulosity, APT, ScopeFocus via ASCOM driver (others not recommended)
Zero position set manually (via two push buttons) or in software
Optional push buttons for manual control of IN and OUT
Uses external power supply for driving stepper 9V-12VDC
Supports absolute focusing
Supports temperature compensation
Supports stepsize
Supports backlash
12VDC@2A PSU required
LED indications for IN, OUT and External PWR
Options
- Temperature probe based on DS18B20 sensor
- LCD1602/I2C display for positional information (Current and Target positions)
- Push buttons for manual IN/OUT
- Rotary Encoder for manual IN/OUT and speed control
- InfraRed Remote control for manual IN/OUT and speed control
- Bluetooth HC05 wireless control up to 20 meters
- True Wifi option using ESP8266 controller
- 4x4 Membrane Keypad option
Multiple versions supported
- 28BYJ-48 Stepper Motor and ULN2003 driver board using Arduino Nano
- 28BYJ-48 Stepper Motor and L293D Motor Shield using Arduino Uno
- NEMA 17HS15-0404S-PG5 Stepper Motor and L293D Motor Shield using Arduino Uno
- NEMA 17 Stepper Motor and EasyDriver v44 board using Arduino Uno
- NEMA 17 Stepper Motor and DRV8825 board using Arduino Uno
Multiple driver board support
- ULN2003 driver board - up to 400mA
- L293D Motor Shield - up to 600mA
- L293D Mini Driver Board + Nano - up to 600mA
- EasyDriver v44 board - up to 500ma (750mA Max)
- DRV8825 driver board - up to 1.5A (2A with heatsink)
- L298N driver board - up to 2A (3A Max)
- RAPS128 driver board - up to 2A
- ST6128 driver board - up to 2A
- TB6612FNG driver board - up to 1.2A
- TMC2225 and TMC2209 BIGTREETECH - up to 1.5A (2A with heatsink)
Display Options (may not available with all driver boards)
- LCD1602/I2C display
- LCD2004/I2C display
- TFT 2.2"
- OLED I2C 0.96"
- NOKIA 5119

PCB Options - Professional PCB: MYFOCUSERPRO2 PCB CAN BE ORDERED ONLINE

Please see the folder /GERBERS on how to download the Gerber files and order PCB's online for as little as $2USD excluding shipping costs.

MYFOCUSERPRO2 PCB VARIATIONS

https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/BOARDS%20PCB/

Boards support a number of different options, adding more components on the board can add more features like Temperature Probe, Push Buttons, Display etc. For Gerber files, please goto this link

Other DIY PCB and Stripboard Options

If you want to make your own PCB the old fashioned way (instead of wiring a stripboard) there are a number of different versions in the STRIPBOARDS folder. This involves a transfer process and etching.
For stripboards please see
https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/BOARDS%20STRIPBOARDS/

For other DIY PCB's generated by users please see
https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/User%20PCB%20Designs/