Autonomous Robot: Coin Frog

COin IN Fountain RObotic Gatherer for Intelligent Machine Design Lab (EEL5666) Spring 2009 at the University of Florida. This robot was designed to autonomously collect coins from a fountain submersibly. It's running on an Atmel ATmega128 microprocessor with a 12V 7.5Ah SLA battery powering everything (2 DC motors, bilge pump, LEDs, etc). It uses only momentary switches as bump sensors to react to its environment (mostly due to the cost involved in any other sensors while underwater). Believe it or not, but the sensitive electronics are being housed in an o-ring sealed tupperware style container, all power/signal transferring to the outside components is done with only press-fit holes, marine epoxy and hot glue and the DC motors/switches are not waterproofed (this means it can only be run in fresh/tap water). The entire unit deconstructs all the way down to be worked on incase components need replacing and a homemade water sensor is located in the bottom of the sealed container to kill power in case of a breach. It's a semester's worth of work and over $600 invested! Lots more to know about this guy!

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