Rettger Galactic Today the World, Tomorrow the Galaxy!

A Moving Timelapse Rig With Arduino

A few weeks ago I was eating a grapefruit when I noticed that several of the seeds inside were sprouting. I pulled them out and put them in a plastic bag to sprout, and started to wonder what I

Here’s a fun project I just finished working on. It’s an Android and Raspberry Pi powered gumball machine. There’s not much to the Android app right now because the gumball part is being integrated into an existing app. The

It’s finally here! I pre-ordered my Shapeoko 2 in November and it shipped out last week. I got it put together and have had a few days to play with it. So far it’s great! I was never able

Android Controlled Roomba – Telepresence Robot Demo

Today I wanted to share a project I’ve been working on for the last couple months. At the company I work for, our main office is in Chicago, but the director of development lives and works in Toronto. We

Communication between native and React Native in Android

React Native is awesome for cross platform development, but I’ve noticed that the documentation for iOS is a lot

Jun 22, 2016

2 Comments

Fixing “No rule to make target ‘/usr/lib/liblog4cxx.so’ in ROS

I’m getting into ROS (Robot Operating System) and ran into an error that stumped me for a while. Here’s

Jan 15, 2016

4 Comments

A Voice Controlled Android Stopwatch

I just launched a little weekend project I’ve been working on. It’s pretty simple- An Android stopwatch app that

Feb 8, 2015

1 Comment

A Moving Timelapse Rig With Arduino

A few weeks ago I was eating a grapefruit when I noticed that several of the seeds inside were

Sep 9, 2014

10 Comments

OnePlus One Review

If you’ve been following the latest Android gadget news, you’ve probably heard about the new “Flagship Killer” phone, the

Jul 28, 2014

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A Raspberry Pi Powered Gumball Machine

Here’s a fun project I just finished working on. It’s an Android and Raspberry Pi powered gumball machine. There’s

Apr 7, 2014

2 Comments

Getting Started With CNC Router Bits

Selecting which bits to use for a CNC project is a common source of frustration for a lot of

Apr 7, 2014

2 Comments

Quick Shapeoko DW660 Spindle Mount

So the stock Z axis on the Shapeoko 2 doesn’t fit larger tools like the Dewalt DW660 or the

Feb 24, 2014

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Tutorial: How To Create A Database With PHP & MySQL – Part 3

This is the third and final part of my tutorial series on creating a database with PHP and MySQL.

Feb 23, 2014

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Tutorial: How To Create A Database With PHP & MySQL – Part 2

This is the second part of my tutorial on how to create a database with PHP and MySQL. If

Feb 23, 2014

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Tutorial: How To Create A Database With PHP & MySQL – Part 1

One of my goals here at Rettger Galactic is to make programming fun and accessible to everyone. I showcase

Feb 23, 2014

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Simple Fix For Arduino Motor Shield Problem

If you’re using the Arduino Motor Shield and wracking your brain trying to figure out why your motors aren’t

Feb 19, 2014

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