TRI-COPTER drone using arduino

Kind of frugal Tricopter made using arduino as flight controller running multiwii. The transmitter and receiver were also made using arduino and NRF24 transreceiver. On further developing the project I made an servo based camera gimbal using simple 9 gm servos capable of holding an smartphone.(https://www.youtube.com/watch?v=QPNyg-K_iaE) The frame of the drone was made using PVC casing pipe and plywood and as a result the endurance time was greatly improved.