Hello everybody, I was wondering if anyone can help me find the cheapest motor controller and omni directional  wheels and linux platform cheaper than raspberry pi they have used for their robot? This would really help me out a great deal as i am…

Does any one know if three ultrasonic sensor, two of them placed facing outwards in 45 degree angle  from center ultrasonic sensor will interfere the reading taken by each other? In other words can i use three ultrasonic sensor in same device…

Can some one help me find me distance that are long range i.e. greater than 10 m. I have seen laser sensor which do not have good spread i am looking for to use it in my drone. Any advice will be greatly appreciated. Thanks