Category Archives: Uncategorized

Eye, Robot (Part One)

I’m toying with the idea of a robot that can interact with its environment by pattern recognition. I thought the way to do this was with a raspberry pi computer. So I bought the computer and the pi camera from … Continue reading

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Rocket Ship Freedom free for today (Dec 16)

Rocket Ship Freedom This is a YA novel I wrote eight years ago about a single stage to orbit rocket that travels to the Moon. It doesn’t come back, so how the crew gets home is something you’ll have to … Continue reading

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The Wizard from Earth

My science fiction novel, The Wizard from Earth, is available on Amazon Kindle as an eBook. It’s selling for only 99 cents. If you don’t have a Kindle, you can still download the free Kindle Reader software, and read it … Continue reading

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Kind of a resume

I’m looking into tutoring again and thought it might be useful to list a few links that illustrate what I’ve done. I may not have done the right stuff, but I have done stuff. Arduino Park: Grisbot 2-obstacle course: Grisbot … Continue reading

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Rocket Ship Freedom available for download

Rocket Ship Freedom Rocket Ship Freedom is my YA novel about a teenager who gets an internship at a private rocket company and ends up going to the Moon, where he discovers a deadly mystery that threatens the survival of … Continue reading

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Ultrasonic toggle switch

This is an idea for using an ultrasonic distance sensor (aka ‘pinger’) as a toggle switch. I’ll show it first and then explain: As the hand approaches, the yellow light comes on to indicate that the switch is in aware … Continue reading

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Debugging Touchless Technology

The comment that I added to the previous post was not the full solution to having a row of touchless buttons, but it set me on the way. A second pinger IS necessary to discriminate against anomalous readings. In the … Continue reading

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