My wife has really long, thick, black hair. Sometimes, when I crash my crazyflie (rarely of course, I am a superb pilot after all) it lands upside down on the floor and inevitably twists her hair up in a motor or two. It’s annoying. At first I wouldn’t really know what had happened. After I started flying again post-crash, performance would be abysmal. The Crazyflie would pull to the left or right or it would just be generally unstable. When I had the python client running, it was quite clear from the flight data that one or more of the motors were underperforming. Once I brought the Crazyflie back to home base to investigate, I found the problem in a tangled spider of dark black hair!
A couple times I easily remedied the situation by simply pulling the hair out. Other times, it was so tangled the only way to dislodge it was by removing the propeller. When I first assembled the Crazyflie, I made sure to very carefully press fit the propellers so as not to damage the motors’ rotors. I really didn’t want to cause problems by pulling props off again in a less than gentle manner. I can be quite ham-handed and finesse is rarely one of my strong suits. Fortunately, I found the perfect propeller removal tool!
This little fork fit just right under the propeller and is able to wedge the prop up just enough to allow for easy removal with graceless fingers. It was just what I was looking for. It actually came from my wife and since the hair that caused the problem in the first place came from here, I thought it a right justice that I’d steal her little, two-tined, sardine fork for my Crazyflie tool kit! Now, when hair gets twisted up in a motor after a carpet padded crash, I don’t have any problem at all dislodging the twisted fibrous mess. I don’t think my wife will ever miss the fork. She certainly doesn’t seem to miss all the hairs.