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Freelance Technical Author, Illustrator & Photographer

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Home / Blog / Page 3

Red Pitaya – Buyer Beware

My Red Pitaya failed recently after about 2 years of occasional use. It’s probably a 3.3V power regulator fault but the Red Pitaya team won’t supply component details and don’t have a repair option! So that’s £250 gone and not[…]Click to read more..

Posted on 17th March 201817th March 2018 by Mike Richards — 4 Comments

Raspberry Pi – Fixing a slow mouse

I recently changed my keyboard/mouse combo to a Perixx Periduo-712. When I restarted the Pi, I found that my mouse pointer had become very slow. A quick look around the Internet revealed a fix as follows: To speed-up the mouse,[…]Click to read more..

Posted on 15th February 201815th February 2018 by Mike Richards — 6 Comments

Packet Radio with the Raspberry Pi

Packet Radio TNC with the Raspberry Pi ** Updated 21-2-18 The Pi plus a USB soundcard is all you need to get started with Packet Radio. Instead of using a dedicated hardware TNC, the Pi can be coaxed to do[…]Click to read more..

Posted on 12th October 201721st February 2018 by Mike Richards — 2 Comments

Airspy – Spy Server – Useful scripts

I’ve had Spy Server working very successfully with the Pi 3 for a while now and have written a few time-saving scripts that others might find useful. These can be found in the zip file below. Here’s a quick run[…]Click to read more..

Posted on 3rd August 201724th July 2018 by Mike Richards — Leave a comment

Raspberry Pi – Running Spy Server as a service

Updated 8th March to clarify the requirement for Spy Server to be pre-installed. Updated 8th Aug 2018 to add a start-up delay to the rtlsdr.service file. This is to ensure that an IP address has been allocated before the Spy[…]Click to read more..

Posted on 16th March 20188th March 2019 by Mike Richards — 14 Comments

Airspy – Spy Server Scripts

I’ve had Spy Server working very successfully with the Pi 3 for a while now and have written a few time-saving scripts that others might find useful. These can be found in the attached zip file. Here’s a quick run[…]Click to read more..

Posted on 8th February 20188th February 2018 by Mike Richards — 2 Comments

Recover Damaged Mac HFS+ disk with Linux

A friend of mine recently set me a challenge to recover 2TB of photo files from a Mac external drive that had failed. Fortunately, it was the USB to SATA converter that failed, so I could extract the bare drive[…]Click to read more..

Posted on 30th August 201730th August 2017 by Mike Richards — 9 Comments

Running SpyServer on a Raspberry Pi-3

*UPDATED 31st October 2018: A few typos corrected and instructions updated for Stretch. Also made amendments for Airspy-Mini receiver. NB: Spy Server is undergoing active development so it’s important to regularly update both Spy Server and SDR Sharp. Introduction SpyServer[…]Click to read more..

Posted on 25th May 201731st October 2018 by Mike Richards — 58 Comments

Raspberry Pi – Running a program after the PIXEL desktop starts

Updated 21-4-2020 to correct typo. To automatically run a python program when the PIXEL loads, you need to add a command to the autostart file that can be found here: /etc/xdg/lxsession/LXDE-pi/autostart Here’s the process: Open the autostart file: sudo nano[…]Click to read more..

Posted on 16th March 201821st April 2020 by Mike Richards — 4 Comments

RSGB Convention 2017 – Pi in the Shack Slides

The link below will take you to a PDF copy of the slides that I used for my presentations at the 2017 RSGB Convention.   Pi in the Shack-Mike Richards RSGB 2017

Posted on 16th October 20177th February 2018 by Mike Richards — 3 Comments

bhi ParaPro EQ20-DSP Sound file

The following audio files have been provided to support my reviews of the bhi ParaPro EQ200-DSP power amplifier with noise reduction and parametric filtering. The first recording shows an aeronautical VOLMET signal as folows: 0-20 seconds – Origian signal 20-40[…]Click to read more..

Posted on 7th August 20177th February 2018 by Mike Richards — 1 Comment

137MHz Polar Orbiting Weather Satellites

In my Radio User Decode column I’ve been describing a receiving station for the NOAA polar orbiting weather satellites and in this post I’m including a few examples so you can see the station’s capabilities. All the images are taken directly[…]Click to read more..

Posted on 22nd February 20177th February 2018 by Mike Richards — 4 Comments

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