ngrok A (nearly) free custom domain for ngrok Introductionngrok and similar tools are great for providing public access to local services, often for development purposes. I primarily use it for exposing an API being developed locally so that a webhook callback
mikrotik Creating a complete guest network Creating a physically isolated guest network using iptables and 802.11q VLANs.
git Hub Clone Tool IntroductionI work with a large number of repositories, mostly on GitHub, some are my own but most are for work, and the volume only grows since we complete a lot of projects each
Making changes on a read-only Raspberry Pi Introduction The ability to boot a Raspberry Pi from a read-only file system can be advantageous for a variety of reasons and I've previously written a number of posts that look at use
mysql MySQL Workbench, Ubuntu 20.04 and App Armor Recently when installing MySQL workbench on a clean Ubuntu 20.04 install I've run into the following error when connecting locally using a stored password: "An AppArmor policy prevents this sender from sending
arduino RGB LED Electric Drums IntroductionThis is another just-for-fun project which was completed a couple of years ago. I have a number of instruments that I play for the pleasure of it, having had an electronic drum kit
Raspberry Pi Mini Guide: DHCP Controlled Hostname on Raspbian DHCP Controlled Hostname on Raspbian Note: This note was originally in the Network Booting a Raspberry Pi 3 from an Ubuntu Server post. In theory the configuration should be as simple as stated
Raspberry Pi Mini Guide: DHCP Reservations DHCP Reservations Note: This note was originally in the Network Booting a Raspberry Pi 3 from an Ubuntu Server post. To make life easier DHCP Address reservations can be added in the main
Mini Guides Mini Guide: NFS Debugging NFS Debugging Note: This note was originally in the Network Booting a Raspberry Pi 3 from an Ubuntu Server post. Initially when trying to understand whether the Pi was booting from the network
Mini Guides Mini Guide: Controlling Screen Blanking Controlling Screen Blanking Note: This note was originally in the Raspberry Pi 2/3: Chromium in Kiosk mode post. The screen can be turned off using the following command: xset -display :0.0
Mini Guides Mini Guide: Pi User and Management User(s) Pi User and Management User(s) Note: This note was originally in the Raspberry Pi 2/3: Chromium in Kiosk mode post. Auto-login to the GUI works regardless of the pi user's password.
Mini Guides Mini Guide: Raspberry Pi Memory Split Memory Split Note: This note was originally in the Raspberry Pi 2/3: Chromium in Kiosk mode post. The memory available to the GPU can be configured by: sudo raspi-config Option 7 (Advanced)
Mini Guides Mini Guide: Raspberry Pi Overscan and HDMI Modes Overscan and HDMI Modes Note: This note was originally in the Raspberry Pi 2/3: Chromium in Kiosk mode post. In some cases the image may not fill the screen. The overscan setting
Raspberry Pi Mini Guide: Raspberry Pi Serial Console Serial consoleNote: This note was originally in the Raspberry Pi, overlayfs read-write root, read-only NFS base post. It's quite easy to listen on the serial console as you don't have to worry about
Raspberry Pi Mini Guide: Easier Script Debugging DebuggingNote: This note was originally in the Raspberry Pi, overlayfs read-write root, read-only NFS base post. In trying to get the various options out there working I found a number of debugging strategies
Read Only Mini Guide: Read only Raspberry Pi (without NFS) Without NFSNote: This note was originally in the Raspberry Pi, overlayfs read-write root, read-only NFS base post. This setup described in the article above also works without the NFS setup. As we plan
Raspberry Pi Mini Guide: Watching the file-system on Linux Watching the file-systemNote: This note was originally in the Raspberry Pi, overlayfs read-write root, read-only NFS base post. NFS logging appeared to be quite opaque to me, so it proved useful to be
linux Linux Configuration Management at Home with SaltStack IntroductionIt's not uncommon to need to re-install a computer, in the days when I used Windows more it seemed a good way to re-gain performance, as well as eradicate any viruses or other
Easy AWS Lambda function deployment with Apex Introduction Recently I have been spending a lot of time playing with AWS Lambda functions for various tasks like (small) ad-hoc data imports, billing alerts and building Amazon Alexa Skills. For simple tinkering
Gigabyte Aero W15 Keyboard and Linux (Ubuntu) Introduction TL;DR - Here is the GitHub link: https://github.com/paul-ridgway/aero-keyboard, which documents the protocol and has a few utility scripts and examples. For the first time in a long
Raspberry Pi, overlayfs read-write root, read-only NFS base Introduction My recent projects and write-ups (linked below) have involved Network (PXE) Booting a Pi and loading the root file-system from NFS. It works well but any files operations are quite slow, and
Network Booting a Raspberry Pi 2 Introduction While going forward it would be ideal to only use Rasberry Pi 3s for Network Booting (or generally) I have a number of Pi 2s left. Being able to re-use these in
Raspberry Pi Raspberry Pi 2/3: Chromium in Kiosk mode Introduction At work we have a number of screens around the office used for monitoring. To keep the costs down, solution versatile and setup simple the plan was always to use a Raspberry
Network Network Booting a Raspberry Pi 3 from an Ubuntu Server Introduction I often use Raspberry Pis as Chromium Kiosk Clients to monitor our systems and infrastructure, and to reduce the overheads I also Network Boot them for this and a few other uses
Fixing: uninitialized constant OpenSSL::Digest::DSS on Mac OS Sierra I recently installed Ruby (via RVM) on a Mac I use for work, and upon trying to run rails (after the usual bundle install) I got the following error: There was an error
