The plane is not ready to fly yet, but I hope to get it ready within a week. Actually the only thing missing is 30cm silicon wire for the left motor (I made 5 out of 6 cables, and went out of wire). The paintjob is done with black and silver acrylic spray paint.
It will be equipped with the following gear:
- AR7000 2.4GHz diversity R/C receiver
- 4 x Hitec HS-81
- 2 x Turnigy 2213 20-turn brushless motor
- 2 x TowerPro w25A ESC
- 3A UBEC
- 2 x Aluminium spinner
- 2 x 9x6 APC propeller
- 11.1V 4000mAh LiPo
And the following FPV-equipment:
- KX131 video camera
- 1.3GHz (23cm) 1W video transmitter with a four radial GP-antenna
- Totally custom OSD based on the BOB-4 video overlay board
- EM-411 SiRFStar III GPS
- TinyTrak 3
- 3A 5V switch mode regulator
As said, the OSD uses a BOB-4 module for video overlay. I originally controlled the BOB-4 with a PIC16F88, but the increasing amount of float variable calculations and other demanding operations forced me to upgrade to a PIC18F1320. More technical information about the OSD will come later.
It is now fully working (not as seen in picure 16 on the OSD-page below).
The TinyTrak 3 is used to transmit lat./lon. and altitude to the ground station to calculate azimuth and elevation angles for the receiver antenna. I will proceed the development of this system as soon as the basic FPV/OSD system runs satisfiable. The AX.25 decoding on the ground is done with a PIC16F88, and the trigonometrical calculations is done with a PIC18F1320.
The plane so far:
The FPV-stuff so far:
Edited by jonpet55, 14 March 2008 - 02:04 PM.