I have decided to realize the project called “MIKROKOPTER” since September 2009. I have to appreciate the effort of designers. It’s simply perfect project ! I can recommend it for everybody, who likes RC helicopters, wants to start with them or would like to take some photos / record video from the sky ….

Mikrokopter by jopl

Mikrokopter OSD camera & PCB

Mikrokopter OSD initialization

I have used the following components:

• 2x Al profiles 15x15mm, each of 460mm (later changed for 2 carbon tubes and Al holders, but with a little effect for the weight)
• some milled shapes from FR4 1.5mm and 1.0mm without copper (I’ve got milling machine)
• 4x TR28-30B 14A 1050Kv Brushless Outrunner
• 4x TowerPro w18A Brushless Speed Controller (modified to I2C version: forum)
• FlightControl (I completely made it from components … thanks to Michael’s PCB design)
• As propellers I have chosen GWS HD9050 3 Blade Prop and it’s counter rotate opposite
• MK3Mag bought directly from www.mikrokopter.de
• ZIPPY Flightmax 2200mAh 3S1P 20C – for approx. 10min of flight
• LiPol watchdog
• Camera, transmitter and OSD built on my own PCB design (scheme source: EPI-OSD)

The weight is 944g without video transmitter and it’s antenna (as at the photos). I have chosen Ca$cAdE C-OSD project software for OSD. Thank you, Claas ! You can find the source code on mikrokopter’s SVN. But many functions in the FC mode weren’t available, although it can be. The art horizon is also simple, so I decided to slightly rebuilt the code. Of course, the characters’ set has to be changed to show this feature. I have to thank NuClear for tight colaboration on this issue. Here you can download the hex files for ATmega162: OSD hex files Fuses (ATmega 162): EXTENDED: 0xFB, HIGH: 0xD7, LOW: 0xEF And the result is here. Kindly see the video: Mikrokopter OSD test