Category Archives: Projects

SUNDAR update #2

Posted on September 6, 2013 by Skye Sweeney

I took a few weeks off for vacation and to get my son ready to go to Europe for two years to complete his master’s program. I have a few things left to clean up before I can start back into … Continue reading →

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SUNDAR update

Posted on August 2, 2013 by Skye Sweeney

Today I replaced the opamps with the new ones I just got from Analog Devices. These were SMT parts and I had to solder them to DIP adapters. But they share the same pin outs as a DIP, so the … Continue reading →

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All is not lost with GPS

Posted on August 2, 2013 by Skye Sweeney

So after looking at the GPS data I collected, I figured I would try another data collection in 2D mode with the know altitude set. That would allow me to use one more satellite for horizontal position. I collected 12 … Continue reading →

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GPS error

Posted on July 31, 2013 by Skye Sweeney

Towards my goal of entering the AVC competition in 2014, I have been evaluating GPS units. The current model I am looking at is a u-Blox LEA-6H with a patch antenna. The first test I tried was to hold the … Continue reading →

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A Storm!

Posted on July 29, 2013 by Skye Sweeney

Had a storm come through the area when I was at work. Luckily I had the Tautic board running and collecting data. I have just spent some time processing the data and I am now rather hopeful that this might … Continue reading →

Posted in Lightning detector, Projects | 2 Comments

AS3935 “Striker” software update

Posted on July 27, 2013 by Skye Sweeney

I was notified my Striker code on GitHub had a defect (bug). The contributor posted a patch that I have implemented.  You can find the updated code at www.github.com/skyesweeney/striker

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Opamp trouble

Posted on July 27, 2013 by Skye Sweeney

Been working on the two stage opamp for my Sundar. The first stage takes the current from the photodiode and turns it into a voltage with a certain amount of gain. The second stage applies a second gain as well … Continue reading →

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SUNDAR update

Posted on July 18, 2013 by Skye Sweeney

Been working on my SUNDAR in what little free time I have these days. Last night my Digikey order came in and I was able to get the dual channel digital potentiometer working. This will be used for a software … Continue reading →

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SUNDAR project

Posted on July 10, 2013 by Skye Sweeney

In the interest of trying to determine my heading for the AVC robot competition, I have been working on a celestial solution. I am calling this device a SUNDAR as a hybrid of SUN and RADAR. In essence I am … Continue reading →

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Lightning detector update (AS3935)

Posted on July 8, 2013 by Skye Sweeney

In a previous comment, I was informed that I had a bug in the software I posted on GitHub. Seems that I forgot to implement the 2 millisecond delay before reading the interrupt service register. Not sure what happened as … Continue reading →

Posted in AS3935, Lightning detector | 5 Comments