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4WD Robotic Car controlled over Bluetooth with iPhone App

After massive brain damage I finally managed to build a prototype 4WD Robotic car controlled over Bluetooth using iPhone app. This was done using serial communication between Arduino mega and Hercules motor driver. Sorry for not posting detailed pinout diagram. If anyone interested in detailed connections please drop me an email or comment. The real trick was to make the serial connections work and test without connecting the USB cable on Hercules. Hercules board should have had two serial communication pins for easy testing as it was pain to keep removing the connected Arduino serial connections for testing. Anyways its done now 😉

Parts used in this demo

You can download the source code used in this project “CarRemote” in Github. Please forgive my bad C code as it been real long time.

4WD Robotic Car with 15 Kilo Load Test

Finally I put together my 4WD Robotic car. Thanks to Hercules Motor controller it’s doing what I am expecting of it. My self challenge was to make it carry 5 gallon water bottle. Few attempts failed as the motor was starting and stoping fast and the bottle was jumping out of the car. So I had to increase and reduce the speed slowly.

Parts used in this test

Source code used for this experiment 😉

Watch out for next update with remote control 😀

Time Lapse Video using CubieTruck and Nikon D200

Today it was whole lot fun exploring the possibilities with Raspberry Pi and DSLR for taking time lapse video. Latter I moved from Raspberry Pi to CubieTruck so that I can attach hard drive for large storage capacity. I found a small command line utility gphoto which can be used as remote control for a DSLR. I can use the utility to click a photo and stream the picture to the Pi.

The version I found on the apt-get was little old so I had to compile my own version. Then you can play around with the gphoto command to play around.

EDIT: Forgot to mention about the cronjob

Last but not the least to make the images into a movie

It was fun I hope you will enjoy doing it 😉

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