Category Archives: Raspberry Pi

What’s wrong with the serial port on the Raspberry Pi 3?

The Raspberry Pi 3 added all sorts of features to the Pi, including a much faster speed adjustable CPU, built-in WiFi, and Bluetooth interfaces. Some of the hardware interfaces on the Pi continue to have limited functionality.  Such is the … Continue reading

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VNC Viewer for RPi

I had no idea that Raspberrian supported VNC connections to the RPi.  I was astounded to find out that a small VNC Viewer Application would remotely connect me to the desktop! Download “TightVNCViewerPortable” here:  http://portableapps.com/node/32118 Run the installation package. (Running … Continue reading

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ISS-Above on 7″ LCD

I finally had a chance to tie the Raspberry Pi Foundation 7″ LCD/Touchscreen onto a RPi 2 running the ISS-Above firmware.  The results were outstanding.  It makes for a nice desk piece, with only a single power supply wire exiting … Continue reading

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ISS-Above: Coolest Tool for ISS Pass Prediction – EVER

While looking for interesting things to display concerning the ISS during our upcoming ARISS contact, I stumbled across a now commercial product that started not long ago as an overfunded Kickstarter campaign. ISS-Above. ISS-Above is a Raspberry Pi based product with … Continue reading

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Getting the RPi 3 to work with Bluetooth

After solving the display rotation issue, I was anxious to get rid of the USB based keyboard and mouse, and move onto Bluetooth based devices.  I had followed a RPi blog instruction to update various parts of the OS, and … Continue reading

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Fixing an Upside-Down RPi3 7″ LCD Display

The Raspberry Pi Foundation announced their new RPi Model 3 this month, upping the processor speed and memory yet again.  They also announced the availability of an “official” 7″ LCD with touchscreen. I couldn’t resist picking up one of each … Continue reading

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Updating WiFi Info for NTP Clock

My ever-faithful Apple Airport Extreme decided to give up the ghost about a week ago.  I was forced to use the built-in WiFi in my Verizon router as a temporary replacement.  Of course that meant that all the WiFi based … Continue reading

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TNC-Pi for Raspberry Pi 2

I just ordered a TNC-Pi 2 (they have a model for the older Pi versions as well) from Coastal Chip Works on Wednesday.  It was in my mailbox on Friday – FAST service! Nice looking board, well put together.  I’m curious … Continue reading

Posted in APRS, Digital Mode, Gear, Raspberry Pi | Leave a comment

Open Source SGP4 Python Package

SGP4 is a Simplified General Perturbations mathematical model, which is used to calculate the position of satellites relative to the Earth.  The most frequently used model is SGP4, which is used with Two-Line Element (TLE) sets provided by NORAD and … Continue reading

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Setting the RPi System Clock via GPS

I am still learning and experimenting with the Adafruit Ultimate GPS HAT and the Raspberry Pi 2 Model B.  While I have the GPS tied into the system now, it doesn’t appear that the Raspbian NTP service is handling the … Continue reading

Posted in Raspberry Pi, Satellite, Tracker | 5 Comments