I arducopter code " define " Tab I see/* Expansion PIN's that people can use for various things. */// AN0 - 7 are located at edge of IMU PCB "above" pressure sensor and// Expansion port// AN0 - 5 are also located next to voltage dividers and sliding SW2 switch// AN0 - 3 has 10kOhm resistor in serial, include 3.9kOhm to make it as// voltage divider// AN4 - 5 are direct GPIO pins from atmega1280 and they are the latest pins// next to SW2 switch// Look more ArduCopter Wiki for voltage dividers and…See More

I just bought the 3DR 433Mhz radio telemetry kit from DIYDrones.. The two boards of the 433Mhz looks same. After I received the kit I soldered the header pins to the boards and connected to the FTDI cable. Now one board connects fine to the configuration tool and I am able to LOAD SETTINGS from it..and the GREEN LED is blinking.. But when I am connecting the other board to the FTDI cable the GREEN LED is solid and RED LED is blinking every 1 second.Even I am unable to LOAD SETTINGS from the…See More

I burnt the atmega 2560 on APM 2.. I replaced it with a new Atmega 2560..I am unable to flash the board now with any of the firmwares with APM Planner..Is it that the arduino bootloader is needed on the board to upload firmware..??If so please tell me how to upload arduino firmware on a Atmega 2560 , as I have tried according to this tutorial and it didnt work..http://arduino.cc/en/Tutorial/ArduinoISPSee More