Author Archives: andygrove

HC-SR04 Breakout Board for Arduino

This weekend I assembled the first version of a new HC-SR04 breakout board that I have been working on lately. The goal of this project is to let an Arduino Uno (or any other 5V microcontroller) monitor up to 8 ultrasonic sensors over SPI, therefore only using one dedicated pin. The other advantage is that by offloading the sensor monitoring,… Read more »

Post-mortem of SparkFun AVC 2015 Performance

Half a year after our terrible performance at SparkFun’s AVC competition, I’ve analyzed the data collected during one of the runs and have figured out the mistakes I made in the navigation software. I had previously tried looking at the data, but needed to be able to visualize it to make any sense of it all. My first step was… Read more »

New web site for the voice changer shield

Over the Christmas break, I have set up a dedicated web site as a central place to put information for my voice changer shield kit. I have also converted the software into an Arduino Library with example sketches, making installation simpler. The ring modulator example sketch is also now much easier to understand as a result, since all of the… Read more »

Blinking an LED with Rust on a Beaglebone Black

I started learning the Rust programming language about a week ago and have high hopes for this becoming one of the main languages I start to use professionally. Before that though, I wanted to find a hobby project to give me more motivation for working with the language on a regular basis, so I spent much of this weekend researching how… Read more »

OnShape FTW

andygrove   November 6, 2015   No Comments on OnShape FTW

When I purchased my 3D printer almost a year ago, my main interest was in being able to design my own objects to print. I was able to print some simple mounts using SketchUp but have struggled to advance beyond simple designs for a long time. Recently, I learned about OnShape from my local makerspace. OnShape is a browser-based, hosted CAD… Read more »

Making an Ood Translation Sphere

With Halloween approaching, I recently ordered a latex Ood mask from China for around $25. It’s pretty realistic, but the costume would not be complete without a translation sphere, so I had to make one! Here’s a photo of me trying out the full costume for the first time. This was a really simple project that was fun to put together. The… Read more »