This is my first newbie post, i hope i dont make a big fool of myself.
For a long time i have planned to assemble somekind of an robot, i have browsed your site and read tons of guides, and this is what i have come up with.
Be said that for starters i will only try programming and later on maybe get more creative.
This is my shopping list, please advise if something is totally wrong or missing.
Since it contains DC engines 7,5V 4A per unit i chose a driver http://www.active-robots.com/products/motorcon/sabertooth.shtml
For the engines draiver i have planned separate batteries 7,2V 5000mAh Ni-MH Powerpack or something like this.
Microcontroller will be Arduino MEGA. And this brings me to an question - if i supply the controller with 6V (4x GP AA Rechargeable Batteries 1300 NiMH with holder) then what will happen to all the sensors that require 5V supply? Would it require purchasing of 5 Volt switching voltage regulator or is the voltage going out from the controller reduced to 5V?
For starters i planned only 3 IR GP2D12 Distance Measuring Sensor and QTR-8A Reflectance Sensor Array for line follow function. The next step would probably be servos and possibly even a camera.
Since the engines included with my chassis already and have built in quadrature encoder featuring, then how does the feedback work - wires from engines or some other way?