54 lines
2.0 KiB
Markdown
54 lines
2.0 KiB
Markdown
# Star-Track
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[](https://www.gnu.org/licenses/gpl-3.0.en.html#license-text)
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[](https://creativecommons.org/licenses/by-sa/4.0/)
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This repository contains all the files and documentation for Star Track, Arduino powered GoTo-mount inspired star tracking system. [Visit the DIY guide](https://gorkem.cc/projects/StarTrack/) for details.
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File structure:
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+ `Firmware` contains the code and necessary drivers.
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+ `CAD` contains print ready .stl files
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## More info:
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There are two Arduino's working in order. Arduino Uno being master and nano being the puppet.
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### Master module
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The master(Uno) module has two inputs,
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- Gyro data
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- RTC(Real Time Clock) data
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and 6 outputs,
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- cw(base motor clockwise)
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- ccw(base motor counter clockwise)
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- stahp(base motor stop)
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- cw2(DEC motor clockwise)
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- ccw2(DEC motor counter clockwise)
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- stahp2(DEC motor stop)
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The RTC is set to UTC time, a function calculates local sidereal time in degrees and rotates the mount to 0h RA position. The loop constantly checks if the gyro data is equal to the user input & sidereal time data. The default is 0,0. If there is a change and the equality breaks the master module send a command to the puppet module.
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If the user value is higher than the gyro value a signal is sent through cw the motor turns clockwise.
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If the user value is less than the gyro value a signal is sent through ccw the motor turns counter clockwise
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If the user value is equal to the gyro value a signal is sent through stahp and the motor stops
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same for cw2,ccw2,stahp2.
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This way the mount will turn to the user-specified coordinates. And update with sidereal time thus it will track the sky.
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Note: I could use serial communication between the two Arduino's but since the analog pins are used by the inputs I had to use digital pins.
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