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Name	Modified	Size	InfoDownloads / Week
Parent folder
Comms Protocol v133.txt	2023-10-11	4.9 kB	2
myFocuserPro-176-1.pdf	2021-06-05	6.7 MB	7
myFocuserPro.pdf	2020-10-01	5.5 MB	2
myFocuser-Stripboard-Symbols.png	2020-01-11	107.8 kB	1
myFocuser-Schematic-Symbols.png	2020-01-11	44.1 kB	1
LETS MAKE A ULN2003 MINIMAL myFocuserPro Controller.pdf	2017-06-07	1.0 MB	1
Comparison v1 and v2 myFocuserPro.pdf	2016-10-06	519.9 kB	1
myFocuserPro2004LCD.pdf	2016-05-14	398.3 kB	1
Criticial_Focus_Zone 1.1.xls	2016-02-28	79.4 kB	1
Totals: 9 Items		14.4 MB	17

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

Author Robert Brown
Date 2014-2020
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

We need your support to continue development of this project. It is expensive to provide the level of support, development and new features. Please contribute to the ongoing development of this project via PayPal and send the amount to user rbb1brown@gmail.com (Robert Brown). All contributions are gratefully accepted.

AS A STARTING POINT - PLEASE DOWNLOAD

Files\Documentation\myFocuserPro.pdf

OVERVIEW

This is a DIY Stepper Motor Focuser Solution based on an Arduino, PCB or Stripboard 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).

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 stepsize
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
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
- L9110S Driver Board + Nano - up to 800mA
- 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
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 PCBVARIATIONS

DRV8825HW203M-MT-F recommended board
DRV8825HW203_FIRBT for infra red controller
DRV8825HW203_FRE for rotary encoder
A4998-M-MT-F-BT
EASYDRIVER-HW203-M-MT-F-BT
EASYDRIVER-HW203_FRE for rotary encoder
L293DMINI-M-MT-F-BT
L293DMINI-M-MT-F-NOKIA for Nokia 5110 display
L298N-M-MT-F-BT
L9110S-M-MT-F-BT
L9110S-M-MT-NOKIA for Nokia 5110 display
TB6612FNG-M-MT-F-BT
ULN2003-M-MT-F
ULN2003-M-MT-NOKIA for Nokia 5110 display

Boards support a number of different options, adding more components on the board can add more features like Temperature Probe, Push Buttons, Display etc.

Other PCB 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.