Mike Ziwisky's Place to Write Stuff
Electronics. Software. Helicopters. etc.

Archive for October 2010

Heli Problems

October 24, 2010

It doesn’t fly. I finished fabricating the second blade at around midnight. After that, it was time to balance them. With some slightly crude instruments, I got the blades to within about 0.1 – 0.2g of each other, and the difference in their length-wise center of gravity was within about 1-2 millimeters. I thought this […]

Blade Fabrication

October 24, 2010

The next step in the project was fabricating the blades. It wasn’t until now that I noticed a problem with my PCB design. Knowing that I would have to somehow determine the angular position and angular velocity of the blades in flight in order to properly time the flashing of the LEDs, I had incorporated […]

PCB Design

October 24, 2010

Now that I had an idea of how the hardware needed to be connected, it was time to design a PCB. For this task I used the free version of Cadsoft Eagle. I hadn’t ever used Eagle before, so it was a bit of a learning curve. But after several hours and a few online […]

A POV Prototype

October 24, 2010

The best way to start a new project is to just jump into it. So for the heli lights, my first step was to prototype a POV display. I wanted to use an AVR microcontroller because I already had a programmer and some chips that I bought for other projects that I never got around […]

Idea: A POV Display for Helicopter Blades

October 17, 2010

I’ve had a fascination with R/C helicopters for many years. I’ve owned two helicopters previously, and I recently purchased my third after going about three years without one. I showed the helicopter to my adviser at school and he loved it so much that he wanted to promote it as something of a “mascot” for […]

An Introduction: Heli Lights

October 17, 2010

I’d like for this site to serve as a place to document the projects I’m working on. At the time of writing this post, I am about 75% of the way through the project I am about to describe, but I’ve decided to back up and write this up step by step in a series […]