Robotics project

i want a robot, with touch, sound, light sensors. Also i want it to have ultrasonic, and servo motor. all the hardware fees are not included in the bid price, those are only the programming costs. A budget for all the sensors and stuff will be made via pm, and when everything is ok then we proceed) I want it to be build in .net platform (the programming part) and using c#. i also want all the source code, so i can study and odify the software part Bids under 70$ are seriously considered