Mark Lecturing in Maryland, not Texas!

This circuit is used to create a simple "edgebot" sumo robot. Being an edgebot refers that it will repeat the same backup/turn/go forward action when it's single edge sensor detects the edge of the ring. This version of the circuit is quite simple, and always turns the same way.

Thanks to some information provided to us by a very determined customer (Thanks Erin!), we've been able to pin down why some of your credit cards were being declined. We've been able to correct and verify that this bug has been resolved, so those of you who have been declined while using an otherwise valid […]

Wednesday naturally turns into Thursday, so the links seamlessly migrated from Wednesday to Thursday too... They are not allowed to Friday though, otherwise they will turn into pumpkins. Er, I mean Friday-not-so-cool links. Which will be just unacceptable! Hello World. A sign built from 5,000 rocker switches. An enormous grid made of 5,000 orange rocker […]

After last year's meltdown of servers during SparkFun's 1st "Free Day", we sent them flowers of condolence. This year, after seeing that little image of a burning computer on their error webpage , we felt he urgent need to send down the entire Canadian fire brigade (yup, both extinguishers). And who better to put out […]