Bluetooth Action Cam Slider

thingiverse

######### Update 1 ######### Software files updated in MnM_ActionCamSlider_Software.zip. Changelog App: 1.1 Added App Icon Changed max time from 60 to 24 hours Set time with minutes Angle now ranges from -180 to +180 degrees Changelog Sketch: More Comments Changed Steps/rev to DRV8834 Added Wiring Diagram This is my GoPro compatible Action Cam Slider Project. It's main goal is to make an easy, cheap slider for timelapses. This slider can take up to ~10^38 seconds for the distance... should be slow enough! Fastest Speed is 500 Steps/Sec => 1 Revolution in 4 Sec => 20mm/sec (at 26mm wheels) ######### HARDWARE ######### There are two versions: 3D-Printed [PV]: Just print all the parts. Non-Printed [NV]: Print the ActionCamSlider_Plans.pdf in 100% scale, glue it to a sheet of your favorite material and cut along the lines. For both versions: 2x M8 Screws (25mm for PV, 30-35mm for NV) 6-8x M3x10mm (8 if you don't glue the TopMotor Mount to the Base) 1x M5x15mm 1x 10mm tension spring or a rubber band 2x 608zz (Skateboard) Ball Bearing For NV: 2-X M8 Nuts (depending on wanted height and material) 2x 20mm Spacer (with M3 Thread) Electronics (Linked parts on eBay [affiliated]): 1x Arduino Nano (or compatible) https://goo.gl/6Ux23S 1x HC-05 Bluetooth Module https://goo.gl/X27cM0 2x 28BYJ-48 Stepper Motors https://goo.gl/TDYjsP 2x Stepper motor drivers. Best would be to use DRV8824 or DRV8834 https://goo.gl/Bni40L Both can drive low voltage Stepper motors but they are relatively expensive (~10$). That way you could run everything from a power bank. If you have some A4988 laying around you can also use these, but then you have to supply >8V and step it down to 5V for the Arduino and Bluetooth with this converter https://goo.gl/sWpdlK for example. ######### SOFTWARE ######### (all in MnM_ActionCamSlider_Software.zip) Arduino: Custom settings (e.g. Wheel Diameter) are set in the top of the Sketch Upload the Arduino Sketch to the Arduino Smartphone (App Android only, workaround for iOS): The App was made using the free "MIT App Inventer 2" You can just download the APK and install it (allow Unknown sources under Settings>Security) If you want to have a look at the Code or don't trust me (;P) create an App Inventor account and import the .aia-file. Pair the HC-05 and your Smartphone before connecting the App to the slider or it will not show up. iOS: You can use a Bluetooth Terminal app like BluTerm to control the Slider. Just send the commands explained in the following protocol. ######### PROTOCOL ######### The protocol is pretty basic but easy to extend. The commands ALWAYS have the pattern: #;#;#;#. The first digit (at the moment) can be 0 (=Set) or 1 (=Move) For now you can only set the wheel diameter (diameter on which it's running). Default is 26mm To set 30mm wheel diameter: 0;30;0;0. (Changes are NOT stored in EEPROM at the moment!) Moving: 1;TimeForTheMove;Distance;TiltCamAngle Example: 1;20;100;30. The move will take 20 seconds, along 100mm (left to right) and tilt the cam 30 degrees. You can use negative Values for Way and Tilt to move into the other direction If you set Time to 0 it will move as fast as possible. ######### MORE INFO ######### For more information see the Project-Videos Part1: https://www.youtube.com/watch?v=jT-A2rkLJT4 Part2: https://youtu.be/9_ftOecn1go Music used in Video: Tours - Enthusiast http://freemusicarchive.org/music/Tours/Enthusiast/Tours_-_Enthusiast