I have to built a robot that fires to an obstacule. The problem is that I want to include it in a 40$ Robot. The robot should continue "walking" when it finds a target, but i dont know how to make the connections between the ultrasonic sensors and two small motors that will fire a ball. The emissor and the receptor are like these:
First of all: How do I mount the sensors?
Second: Do I need some chip (Like l293d)?
Third: What materials do I need?
Fourth: What connections do I need to do?