Throughout my time working with kafka I have developed great software to use with it. But while the software did many things there are other things I still resorted to this cheat sheet for. I have put together this list of commands which I will keep updated here as I find new links and commands that help. My kafka installtion was under /opt/kafka and you will need to change this to your path you installed kafka too. You can also create a symlink and just copy paste commands as they are after changing ip’s.

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A micro api drop in service written in golang, Designed to quickly integrate into any system for any project. Uses very little resources and can handle millions of requests per second. The entire projects source code is posted on github.

You can include a package written for Golang projects to quickly get started with a simple function.

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Package written in Golang to process and format ip Addresses to and from ipv4/ipv6. Can also take ranges in cidr notation. The entire projects source code is posted on github.

You can include a package written for Golang projects to quickly get started with a simple function.

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Go Applications A Go app can vary from 3 to millions of lines of code. They should also be written with one or multiple files with the extension .go You can use any text editor to write a Go program like nano, but our favorite and most supported is Visual Studio Code. Setting up a Go Environment For all of our tutorials we will be using VSCode to help us ease into the language. [Read More]

I wanted to make a ultra lite image that I can quickly drop Go programs onto. This image had a few requirements, be under 300MB, have less than 20MB ram usage idle, startup in under 5 seconds. I will post below everything I did to strip this down so that it can be replicated in the future. Currently with the steps below I have achieved 427MB/16MB, close to my goal for disk and memory usage is below the goal. As for bootup time, I am limited by network connection time 5+ seconds.

Install a fresh Raspbian Stretch Lite image into the SD card (source).

Configure headless SSH and Wi-Fi (if necessary) before starting the SD card (source).

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Nothing makes a developer crazier than a new programming language, right? So, I started learning Go about 6 months ago and now I am going to share with you my reasons for doing so.

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Booting from USB is easy on a Pi1, Pi2, or Pi3. This can be useful in mamy cases to speed up the performance of your pi when using a slow sd card. It can also provide a reliable location where you operating system data resides. Sd cards are prone to data corruption from writes a operating system ussually does. Write the latest Raspbian image to an SD card and boot it. [Read More]

When we first entered 3d printing we started off quickly printing many and many objects. Slowly our printer started to die down once the printer began acting up. Our current printer the Robox rbx1 became the most pain in the ass printer we saw online. Everything was due to the proprietary software and the lack of 3rd party parts.

We started to try and simplify remote access by using Teamviewer and even went as far as to buy a CEL Root SD card. The CEL Root was even worse than our current methods. This is when we finally had it. We wanted an open source printer with a decent bed, 3rd party parts, and Octoprint support.

Together me and my team came up with the list of hobby printers under $2000. We’ll get a decent filament printer now and a small resin printer later.

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Today I will talk about my server setup by request. I setup my server originally for Security cameras because I was tired of proprietary software that every different camera has. My setup right now includes 4 entirely different types of cameras. None of them officially support ONVIF. Every one of my cameras was free so quality was not something I cared for. Today, my server now has my Windows File share (Samba), offsite Sync, Software Raid, Crontab Network Speed monitoring and zoneminder.

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Remember my Bluetooth gamepad project? It’s time for a USB-C version. I started with Bluetooth because I thought it would be easier to support multiple phones. However Hackaday and OSHPark are holding a flex PCB contest. This is a good material to make a gamepad with, and the perfect material for a gamepad that is supposed to resize.

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