I’m working on a new project involving a Raspberry Pi Zero W running ArchLinux ARM. The Pi Zero W, being with only 512MB RAM is having issues performing a task I need that must be done in memory using the vendors command line app. I could rewrite the vendor’s app to be able to run on the 512MB RAM but I’m keeping that for the future. Aside this, there might be other apps that need a little more RAM.
After installing ArchLinux ARM on my Raspberry Pi Zero W and getting the wireless up and running, I reset my keyring using pacman-key --init because pacman told me so. However, this messed up my entire keyring for ARM packages and nothing could get it working again. After some Googling, I found a solution provided by some kind soul who encountered a similar problem. The command to fix your keyring for ArchLinux ARM is
Developers all over are familiar with the various Version Control systems available. Most developers would have used SVN, Git or Visual SourceSafe over the years at work or personally. The most popular Version Control service, GitHub has thousands of users and repositories available. Just ask yourself if Made a change to code, realised it was a mistake and wanted to revert back? Lost code or had a backup that was too old?
Anyone with a sprawling collection of e-books know that managing them manually can be a real pain. It’s even more so of a pain when you want to share the books with others or load them up to your devices. Sure you can load them up on iTunes and transfer it to your iPad but that won’t work with an Android device. I have a spare Raspberry Pi with an old HDD so I figured why not just set up a digital library so I can load up my novels, magazines, RPG manuals, game rulebooks to my devices over the WiFi.
It’s been a while since I did a fresh install of Raspbian AND needing WiFi immediately. My previous setups involved flashing the MicroSD card and connecting it via Ethernet to my test network. However, today I needed to setup a fresh Raspbian with WiFi and SSH out of the box. A few minutes of looking at Stack Exchange (a real God send) and Raspberry Pi forums I found a neat way to do it.
As a follow up from my previous post Getting Waveshare TFT working on Raspberry Pi, my display was blanking out (turning off) after a few minutes. While this is preferable to conserve power and to prevent the display from spoiling, it will be necessary for my projects to be able to turn the display on on demand to display the information before turning if off automatically again. To that end, I will be using the following approach to turn the display on demand.
For some projects, having a display for the Raspberry Pi is necessary to help convey what the Raspberry Pi is currently doing. I’ve acquired some Waveshare 3.5” TFT displays for my Raspberry Pi for a few projects that I’m working on. Getting them to work on the latest Raspbian Jessie was really easy as opposed to the Wheezy versions. Below are the steps I used to get it working.