This modified version of OpenLog 3 Light modifies the "CONFIG.TXT" system that is normally used to configure the OpenLog in order to simplify the available settings and ensure it is compatible with the Blackbox. The only available setting in CONFIG.TXT is the baud rate, which defaults to 115200.
You will find a zip file containing the required libraries, the source-code and the compiled hex file on the "releases" page above.
You'll need to copy the required libraries to your Arduino 1.0.6 IDE's library path in order to build this from
source. Copy the inner libs/SdFat-master/SdFat and libs/SerialPort-master/SerialPort folders to your libraries folder
directly (don't copy the outer folders SdFat-master/ or SerialPort-master/.)
To flash the firmware to the OpenLog, you can use an FTDI programmer like the FTDI Basic Breakout along with some way of switching the Tx and Rx pins over (since the OpenLog has them switched) like the FTDI crossover .
In the Arduino IDE, choose the "Arduino Uno" as your board and select your serial port (if you use an FTDI cable) or your programmer if you're using one. Then click Sketch -> Verify/Compile and File -> Upload to send it to the OpenLog.