Month: October 2020

How-to: Headless Pi easy setup

How-to: Headless Pi easy setup

Raspberry Pi, SD card, PSU, card reader and a laptop with WiFi and Internet – set up and deploy without ever using any local peripherals (unless you can call its power supply a peripheral) While this set of instructions is easily found all over the web I’ve put it in one place for my own …

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ADS-B antenna and stats – Antenna B

ADS-B antenna and stats – Antenna B

My initial (decent) stab at an ADS-B antenna This is a work-in-progress and relates to this article on further developments beyond the details below. See also Antenna A’s stats and design here. The design is a basic 6.5-element coaxial collinear antenna with a whip, feedline, chokes and a decoupling sleeve. Further developments will assess improvements …

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Raspberry Pi Imager – destination full

Raspberry Pi Imager – destination full

Have you ever tried to start from scratch – write a new Raspbian image to an SD card you’ve used before? Unless I’m alone an existing image causes Raspberry Pi Imager to report “Destination disk full” and will not allow you to override that even if you don’t care that it’s already full. (At least …

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Report my Raspberry Pi model

Report my Raspberry Pi model

How to identify Raspberry Pi model details from the command line. Or, to put it another way, which Pi did I SSH into? To get the model: then read the revision from the table –OR– Then lookup the revision from https://elinux.org/RPi_HardwareHistory To get RAM details (if you have a Pi 4 with 2GB and a …

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Linux Commands – top ten or thereabouts

Linux Commands – top ten or thereabouts

Commands I’m forever Googling… Command Does what? Example history Prints previously executed commands history !!!n!-n Re-executes a previous command:!! – last command (inc sudo !!)!n – command at history line n!-n – n commands ago !!sudo !!!702!-1 pwd Print Working Directory pwd rmdir Remove empty Directory rmdir rm Remove any Director rm locate find file …

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ADS-B DIY Antenna

ADS-B DIY Antenna

How I made the first antenna to give me 200-mile ADS-B range plus…ongoing testing of individual improvements (or adjustments, as I like to call the ones that go in the bin) This experimental learning started as a means to simply test that I’d got an ADS-B receiver working and was in an area where I …

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