Author Archives: jimhannon

Air Quality Sensor

An air quality sensor (dust sensor) has been on my todo list for a while. There are a number of sensor modules on the market for the DIYer but all that I had seen seemed to not be suited for … Continue reading

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Telescope Mount Adapter

The University of Iowa donated the Rigel robotic telescope to the Cedar Amateur Astronomers. Plans are to install this telescope in one of the domes at the observatory. To mount the scope an adapter is needed to connect the scope … Continue reading

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Biochar Study

This is a  citizen science activity that I spotted on Scistarter. I keep an eye on the citizen science projects on Scistarter and this one interested me. Scistarter lists a lot of citizen science projects. I had seen a lot … Continue reading

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Soil Temperature Probe

A soil temperature probe has been on my todo list for a while. So I decided to build one now along with a number of other improvements, and repairs to my weather station. The soil temperature at four inch depth … Continue reading

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Rain Sensor

I thought it would be interesting to add a rain sensor to my tipping bucket rain gauge. Because it take time for the bucket to fill and does not always tip right when it stops raining a sensor that detects … Continue reading

Posted in Amateur Science, Astronomy, DIY, Electronics, environmental monotoring, Imbedded Software, Nature, Software | Tagged , , , , , , , , , , , | 1 Comment

Barn Door Star Tracker

I wanted to take some star pictures with my DSLR and decided a barn door style star tracker would be a fun project to build. Early versions were nothing more than two boards connected by a hinge with a screw … Continue reading

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Building A Sand Muller

To do sand casting a muller is almost a necessity. It is difficult to mix up foundry sand either green sand or oil bonded sand without a muller. I have been thinking about how to build a muller for some … Continue reading

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