EQ Focuser

An Open Source Computer Controlled Telescope Focuser using Arduino.

Description

An Absolute ASCOM Driver for EQ Focuser. The Focuser can be controlled manually or by using ASCOM that Astronomoical Applications use for observation or taking astrophotography. The EQ Focuser features a very simple interface and manual controller. It doesn't need to be attached to a computer for manual operation. For ASCOM Driver operation, it needs to be connected to a USB port.

Supported Stepper Motor Controller

• ULN2003 Motor Driver
• Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit - v2.3 https://www.adafruit.com/product/1438
• Easy Driver http://www.schmalzhaus.com/EasyDriver/

Travis

https://travis-ci.org/EverettQuebral/EQFocuser Unfortunately, Travis can only test and build on a Mono in a Linux Environment, the test is failing as of this moment

Hardware Parts

• 1 Arduino (https://www.amazon.com/Gikfun-ATmega328-Micro-controller-Arduino-Ek1620x1/dp/B00Q9YBO88/ref=sr_1_10?s=electronics&ie=UTF8&qid=1509426881&sr=1-10&keywords=arduino+nano)
• 2 Pull Up Switch (Optional)
• 1 Variable Resistor (Optional)
• 1 DHT11 (Temperature/Humidity) Sensor (Optional)

Nema17 Motor

• 1 EasyDriver or Adafruit Motor Controller (https://www.amazon.com/Gikfun-EasyDriver-Shield-Stepper-Arduino/dp/B00RCTW5SM/ref=sr_1_2_sspa?s=electronics&ie=UTF8&qid=1509426935&sr=1-2-spons&keywords=easydriver+stepper+motor+driver&psc=1)
• 1 NEMA 17 v0.7Amp (https://www.amazon.com/Shaft-Stepper-1-8deg-42x42x34mm-4-wire/dp/B00W96L85Y/ref=sr_1_17?s=electronics&ie=UTF8&qid=1509426959&sr=1-17&keywords=nema+17)

ST35 or 28BYJ-48

• 1 ULN2003 Motor Driver (https://www.amazon.com/4-phase-Stepper-28byj-48-Atomic-Market/dp/B01DLDW9S8/ref=sr_1_23?s=electronics&ie=UTF8&qid=1509427016&sr=1-23&keywords=uln2003+driver+board)
• 1 ST35 (https://shop4.frys.com/product/7726708?site=sr:SEARCH:MAIN_RSLT_PG) or
• 1 28BYJ-48 (https://www.amazon.com/4-phase-Stepper-28byj-48-Atomic-Market/dp/B01DLDW9S8/ref=sr_1_23?s=electronics&ie=UTF8&qid=1509427016&sr=1-23&keywords=uln2003+driver+board)

Diagrams

Diagram Using ULN2003 Motor Driver

Diagram Using EasyDriver

Video

https://www.youtube.com/watch?v=E4LpXYvdvyA&t=5s

Screen Shot

Setup Dialog

Main Window controller

Advanced Windows controller

Driver Download

You can download the latest Driver at the Release section https://github.com/EverettQuebral/EQFocuser/releases

3D Model Files

Available under the Resources folder