Category Archives: Uncategorized

Eye Robot, the Continuing Saga

My original plan for making a robot with visual pattern recognition was to connect a camera to the raspberry pi, and then the raspberry pi to my laptop, and then I would run the raspberry pi ‘headless.’ That means, I … Continue reading

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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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Touchless Technology with ultrasonic distance sensors

The concept behind this circuit design is that you can press buttons without touching them. As your finger lowers to the tabletop, the yellow light will come on, indicating that you are on the correct approach. Farther down, the green … Continue reading

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Touchless interface using pingers (set-up)

I’m about midway in building this demo of touchless technology. The idea is that the user will be able to operate buttons without touching them. Confused? It will all make sense when I get this thing running in the next … Continue reading

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