Sony Arouje

I was always fascinated about software and hardware interaction. But with my limited knowledge in electronics, I kept the hardware part aside and was working only in software. After having some hands on experience with my first Raspberry Pi, I decided to build a toy for my son. I purchased my second pi and some other components and this is what I built. Yes it looks ugly but worth playing with it :).

Last couple of days I was refreshing my basic electronic skills and virtually designing the software and  hardware for the device. You can find so many similar RaspPi based toys and I am adding one more to it.

Yesterday evening I got the last piece of the puzzle, the rechargeable battery.  After that I spent the next 5 hrs to code the application running in the vehicle and the Remote control app for my Android tab, remote control app is based on the Acclerometer of the device. To control the toy I decided to use WiFi and use my Android tab as a steering wheel. I will go more details into the software part in a different post.

Future addition

• Obstacle detection and avoidance system
• Video feed to the remote control device

Components

Rest of the post will go through the components used in the tracker and how to acquire it. If you are in Bangalore then you can get all these items from OM Electronics in SP road or you can buy online. I bought it from OM Electronics.

	Motor Qty: 2 Features 300RPM 12V DC motors with Gearbox 6mm shaft diameter with internal hole 125gm weight Same size motor available in various rpm 2kgcm torque No-load current = 60 mA(Max), Load current = 300 mA(Max)
	Chasis Qty: 1 Features Powder coated Metal chasis for robots. Easy to mount the motors on place by using normal motor mount nut. It can either be used in skid steel configuration (4 motors) or differential configuration (2 rear wheels + 1 front castor wheel). The body contains perforated holes for easy mounting of various size circuit boards and other mechanical components. Length : 190mm Width : 105mm Height : 40mm
	Track wheels Qty: 4 Features 6.1 mm hole. Diameter 90 mm Made from high quality virgin Nylon. Hole on shank for screw Comes with screw to lock on standard motor shaft of 6 mm.

	Track and Ribbit Qty: 60 Features High quality Plastic Track  Belt and Ribbit Specification : 30mm X 20mm 10mm Width
	L293D Motor Driver controller Qty: 1 Features H Bridge to control the motors individually
	Jumber Wires male to male jumber wires – 10 or more  pcs male to female jumber wires – 10 or more pcs female to female jumber wires – 10 or more pcs
	12V Lithium-Ion Rechargeable Battery 12v rechargable battery + charger Url: http://www.robosoftsystems.co.in/roboshop/index.php/12v-lithium-ion-rechargeable-battery.html Charger: http://www.robosoftsystems.co.in/roboshop/index.php/electronics-batteries/batteries-chargers/11-1v-1000mah-15-25c-lipo-battery.html

Next part I will go through the software part of the system. Stay tuned.