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Category: Bike Rides

Pan, Tilt, and Zoom with FFMpeg

Pan, Tilt, and Zoom with FFMpeg

There are times when the content in an image or video is lost in the surrounding details. Live security camera systems have a feature known as PTZ, short for Pan, Tilt, and Zoom. This allows the live cameras a hardware and software way to focus more on an object of interest. With FFMpeg, we can do something similar. In this post I’ll cover the basics of PTZ. Unlike live security cameras were you might notice a transition from the wide…

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IOS Sensor Tracking with SensorLog

IOS Sensor Tracking with SensorLog

Over the years I’ve used a variety of sensor tracking programs that ran on smart phones. These programs will read the sensors built in the phone and log them. I like this because it uses hardware that is already available. There are many apps that I have used to do this. The latest one I used is called SensorLog authored by Bernd Thomas. As of this writing it is at version 1.9.2, dated June 2nd, 2017. I’ll be covering some…

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Bicycle Helmet Embedded Electronics

Bicycle Helmet Embedded Electronics

Several years ago I purchased a small video camera that was shaped like a flashlight for $50.  It had VGA 640 x 480 30 fps video quality and would record up to 2 hours on a single charge.  I used it to record several bike rides around the county on numerous bike trails.  The videos provided a way to recall the conditions and experiences which I used to plan future trips. A couple of years later I purchased some 808…

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Go home and grab your lunch box

Go home and grab your lunch box

No more shines Billy If you want your ebike battery pack to be easy to handle, put it in a box.  I’m not sure why I haven’t posted about this sooner.  In the past, I’ve used the packs as is.  I would tape them in electric tape.  It looked like I was doing a cartel a favor as a mule.  By placing them in lunch boxes, it’s easier to carry them around.  I’m not as worried about the weather or…

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Switched Boost Converter

Switched Boost Converter

Introduction – When driving is worse than biking I was forced to ask myself a question after spending more than 1 hour driving to a location that was less than 15 miles away.  The question was, could I get here quicker on a bike?  The only thing I miss with my change in locations is the daily bike ride to and from work.  It is counter to have a rewarding day thwarted with a droning commute.  Two weeks ago the…

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Geo Tagging Sensor Data

Geo Tagging Sensor Data

Introduction – tag…you’re it There are 10 weeks left and they’ll go by fast, so we’re going to be moving quick through a lot of material.  This post will be on geotagging.  We’ll be tagging Accelerometer data along with current usage for use in heat maps hosted by CartoDB.  If you haven’t used CartoDB, create an account and take a look at the tutorials they offer.  Once you have a bit of background, come on back. Purpose – one slice…

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Academic Roundup

Academic Roundup

Summary – it’s getting closer So far, there has been 15 of 20 posts that have stayed on topic with the goals defined at the beginning of this years studies.  I’ve managed to release at least 3 posts per month that covered the intended material.  Here’s a list of those topics based on grouping. Raspberry Pi Specific Raspberry Pi – The basics Command and control as easy as RPi RPi email using sSMTP RPi Backup and Restore Hardware Selecting an…

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Cacti, RPi, and GPIO device readings

Cacti, RPi, and GPIO device readings

Introduction – CactiPi isn’t as hard to eat as you might think. In my earlier post, the RPi command and control features have been an excellent way to show capabilities. Webmin showed how complex admin tasks can be done graphiclly, without the need for a desktop environment. Smokeping was introduced, but not covered in detail. This tool is usefull in identifying host availability on the network, but it doesn’t go much further. This is were Cacti comes into play. This is…

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Sensor Helmet Developments

Sensor Helmet Developments

CartoDB – Cloud based GPS visualization Back in April I had found ways to plot sensor readings using GPS Visualizer.  The website allowed me to upload my data and plot the results on a map.   Just recently I came across another online tool that has some enhanced features that made me take notice. CartoDB provides SaS that processes geospatial data and presents it in customized formats.  The helmet sensor readings will be geospatial data.  This will be ideal for that application….

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Sensor Helmet Power

Sensor Helmet Power

What will I need? I think I finally decided on what to use for powering the helmet devices.  My February article didn’t give to much technical detail about what would be used.  It was more a to do list for what to spec out.  My March article was more toward the auxiliary power supply to USB devices.  Nothing so far specific to the helmet nor detailed enough to be of any use. The figure that I’ve estimated for all of…

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