Past Few Months

     I noticed I haven't posted anything for four months. Now that I have a job doing electrical engineering, I don't have the same urge to tinker on the nights and weekends. I've still being doing some small things every once and a while, but since I haven't finished any of it yet, I haven't posted anything about them yet.

     I got some new development boards that I've played with. I got two different watches from Texas Instruments. One is Bluetooth (and doesn't seem compatible with any phones made in the last few years) and the other has a 915 MHz radio that I wanted to connect with my home security system (but it has a proprietary wireless stack and I don't want to rewrite it to use with my system. Also, I had to take my security system down after a thunderstorm hit my apartment and destroyed the power system for it.) I also got a TI BLE Sensortag which seems pretty neat, but I need an Apple computer to mess with the iPhone app, so I haven't used it for much of anything. I bought some ATTiny13 chips to work with those programmable LED Christmas lights. I was having a problem using my cheapo programmer to set the clock frequency right, so I stopped working on that. I received my 2 Borderless Electronics Arduino clones. I haven't done anything with it yet but I'm keeping one of them in my car in case a situation comes up where I need to hack something. The creator of the project just launched a part 2 for that project which I decided to back because of how quick and professionally he dealt with the first one. His fundraiser was the best experience I've ever had with a crowd-funding website.

     Last week, I went to a design workshop for work and got to play with a Avnet Wi-Go module so I could use that for an internet-controlled project in the future. I also won one of the new MSP430 Launchpads with the USB HID interface but I have no idea what kind of project I would use that for. The last thing I've been working on is an internet-controlled AC switch that uses the electric imp for it's brains. I need a MOSFET with a Vgs of 3.3V to finish the electronics of the project. I can't believe I have so many electronic parts but can't find a suitable MOSFET. After that, I'll create a 3D-printed case and it should be done. It's pretty simple overall, but I'll still try and write up a blog post on it.

Adjustable RGB LED Color Cube

     I took a sculpture class during my last semester at Penn State so I could meet the required number of credits to graduate. One of the last projects in that class was to create an interactive art installation. I went through a few ideas in my head and doodled them in the Paper app for iPad. You can view the PDF of my ideas here. After I had a good idea of what my design would be, I ordered the parts I did not have on hand from Amazon and eBay. I ordered an Arduino Mega clone, the SainSmart MEGA 2560 Board for Arduino, some Common Cathode RGB LEDs, and some slide potentiometers. I also made a trip to the local hardware store for materials for the overall structure. Before the break is a video explaining the operation of the final project. After the break, I’ll explain how I created the three main pieces to this project - the electronics, the code on the Arduino that controls everything, and the casing for both the base and the controller.

Programming Arduino Bootloader on ATmega328p with ZeptoProg II

     I love creating electronics projects in the most cost effective way. If you're going to use an Arduino in a project, you could embed the whole $30 board, or just the $3 IC chip. Unfortunately, after using just the chip, a brand new ATmega from electronics resellers won't work with the Arduino right off the bat. You have to program the bootloader onto the chip for it to work properly. This blog post will show you how to program the bootloader using a great $20 electronics multitool, the ZeptoProg II, in a few easy steps.

Arduino Diecimila and ZeptoProg II 

Closet Door Lightswitch

     There is a closet in the hallway of my house that is affectionately known as "The Only Hallway Closet". It stores my family's jackets, shoes, blankets, and batteries. The problem with this closet is that it doesn't have a light. Sure, we've tried those stick-on lights that they sell in infomercials, but they don't work that well and it's very easy to forget to turn them off. My dad bought a ceiling light for the closet, but it was never installed. I decided it was about time there was a permanent light source in that closet and I wanted to do it in style. I designed some sensors that detect when the door is opened and closed and will accordingly turn the closet light on and off. This blog post details everything about creating this project, including the electronics and installation.

No lightswitch required

Video overview