Whoops! This was supposed to be posted almost a week ago! Ah well…
So, time for some updates on tinyCopter. I finally ordered propellers! The ones I got are GWS 3-blade 7×3.5 in both normal and reverse rotation. I ordered them from RC Dude Hobbies, and they shipped all the way from Nevada to Michigan in just 2 days! And that was standard shipping! I am really happy with their service, and will order from them in the future.
Once I got the props installed on the motors, I fired one up, using my Arduino to generate the servo signals. I had the copter in my vice, so I loosened it up and upped the throttle. The end started to pull upward, indicating that with all four motors going, there will be plenty of lift.
You can also see in the picture a purple PCB next to the battery. That is a 2 cell LiPo charger based on the LT3652 from Linear. I have it set to the full 2 amp charging current it supports, and my 1300mAH battery says it is rated for a 5C charging current – which seems quite high if you ask me – so I should be good to go there. Still, I might charge it outside the first couple of times, just to be extra safe. You can find the files for it up on GitHub.