Description Camera Slider

Using Arduino UNO to control the NEMA 17 stepper Motor with easydriver over Bluetooth for the DIY motion control camera slider. Demo video will be upload to youtube soon. There must be alot room to improve, please let me know. Thank you!
Right now it only controlling a single stepper motor, I am using AccelStepper library so in the future ,I'll make it control at least two or more motors.
FEATURES
1) Position Control
2) Speed Control
3) Loop
4) Sensor Control
5) Record & Playback
6) Preset Position
MAIN PARTS
1) Arduino UNO
2) Bluetooth module
3) Easydriver
4) Stepper Motor
5) 12v power supply
6) Camera slider
You can find the parts here: http://www.hksupport.hk
Arduino sketch download here
https://drive.google.com/file/d/0B9aOeR9DBGoxSXNDRWVZc0xwakE/view?pli=1
I use this macro slider for testing, it only travels 50mm, for your own slider, you can adjust the step in the setting page.
http://www.thingiverse.com/thing:1582354
Youtube
https://www.youtube.com/watch?v=0nvaefq_vb4
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Blog
http://garylcyhk.blogspot.hk/2016/07/arduino-camera-slider-andriod-app.html