German Version: hoppel

Person

User: Hoppel

Real Name: Andre

Mikrokopter: Since the Chaos Communication Camp 2007 (workshop organisator)

Blog: http://www.quadrokopter-berlin.de

Chaoskopter

Technical Data:

• Flight-Control 1.2 (machine assembled) / Flight-Control 1.0 (self assembled)
• BL_Ctrl 1.0 with 10A Fets (self assembled)
• Robbe Roxxy 2824-34 motors
• EPP 1045 Props
• Bluetooth
• Akku: Powerhouse 2100mAh/2500Ah
• current Frame: Aluminium-square-type tube
• current weight: eta. 780g
• fligth time: eta. 10-23 min

Radio Control: Futaba FC28

Pictures

The Chaoskopter - Stage 1

The build before the Chaos Camp 2007

The finished Kopter after the Chaos Camp 2007:

The Chaoskopter - Stage 2

After my first frame was broken i build a new one with a motor axis distance of 46cm. For the cap i used a salad bowl as prototype and make a copy with epoxy and glas fiber.
It's not looking good, but i can see it very good when i fly.

DigiCam-Mod

Dates from the Camera:

• 7,2 Megapixel
• 800x578 Pixel video resolution (!!!)
• TV-Out

Buyed and demounted.

Functions with the RC transmitter:

• remote trigger
• Zoom is prepared
• video transmission for controlling

The camera is mounted under my Kopter. For the remote trigger i used a BL-Ctrl. I modified the flight control source code too.

MKLight

The light at my MK is build with a unused BL-Ctrl and 30 LED's. 10 LED's and the resistors are soldered at one stripe of a hole board. Against to the first intention to switch every LED alone, i switch now 10 LED's at one. Because the BL-Ctrl has three Mosfet groups i can only switch three LED-stripes. Continouse lightning is boring, so i implemented some effects. The light can be switched on via the remote control. Therefor i modified the source code of the FC. The FC generated a rising edge which is detected by the BL-Ctrl and used für switching the light effects.

Build: The positive LED contact has to be solder at the top of the BL-Ctrl, the negative contact has to solder at one of the minus pads.For the Switching with the RC/FC i use the INT0 interrupt. Therefor i solder a wire at the ISP-Pin 6 pad. This wire has a connection with the FC - J9. The power source is the LiPo.

Source Code BL-Ctrl: mklight.zip

The FC source code modifications::

main.c:

int main (void)
{
   ...
   PORTD = 0xF7; // LED
  //Hoppel Mod
  DDRC |= (1<<PC6); //J9 as output
   ...

main.h

  ...
  #define CFG_LOOP_LINKS      0x04
  #define CFG_LOOP_RECHTS     0x08
  //Hoppel Mod
  #define J9_HI PORTC |= (1<<PC6)
  #define J9_LO PORTC &= ~(1<<PC6)
  ...

fc.c

  ...
  GyroFaktor     = ((float)Parameter_Gyro_P + 10.0) / (256.0/STICK_GAIN);
  IntegralFaktor = ((float) Parameter_Gyro_I) / (44000 / STICK_GAIN);
  //Hoppel Mod
  if(Parameter_UserParam7 > 75) J9_HI; else J9_LO;
  ...

In the MK-Tool the Userparameter is assigned one of the Poti's.

Nighflight

Testflights

Links

• German report about RC Car race

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