Monthly Archives: March 2015

Reducing a robot’s sensitivity to false negatives from the rangefinder

I’ve just had an interesting discussion with Richard Hayes concerning the problems some RoboSumo teams are having with false negative readings from the HC-SR04 rangefinder. When used to detect the presence of a nearby object (such as a robot opponent), … Continue reading

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State machine example from today’s lecture

In today’s lecture, we worked through a state machine example based on the Race to the Wall. Remember: A state machine is a type of algorithm – not an actual physical machine! Obviously, in the case of your robot, the … Continue reading

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Rangefinder example circuit and program from today’s lecture

In today’s lecture, we went through an example circuit and program using the HC-SR04 ultrasonic rangefinder. This was the actual breadboard circuit I used for the demo: This circuit diagram shows the interface between the rangefinder and the MSP430 microcontroller. … Continue reading

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