Drone Architecture Update
July 21, 2011 Leave a comment
In my original post about the drone project, I had mentioned that the wayponts would be saved on an SD card, which is read via the Adafruit SD card breakout. Since that post, I have narrowed my search of RC helicopters to the point where I no longer feel the need to use the Teensy micro controller to save weight. Instead, I will use a regular Arduino Uno.
By using the Arduino, I can shift the architecture of this project away from the model of having a pcb board with breakouts for each of the components and move to a shield-style architecture. The Arduino is styled in a way that allows the developer to stack modules on top of each other like legos. Using this approach, I will no longer use the Adafruit module, but rather the Sparkfun SD card shield.
A side benefit of migrating to the Arduino is that the voltage regulation is built in. I will not need to build a voltage regulator to power the system, but rather pull the regulated voltage off of the Arduino. The downside is that the Teensy has more I/O, but I can’t imagine that I’d be using all of the I/O on the Arduino, let alone enough to require more than what the Arduino supplies.