Hi, around two weeks ago i bought from you a MinimOSD v1.2 to connect to Pixhawk.
After i tried to open with Minimosd extra with FTDI via Arduino, and i got the famous message "failed to talk to bootloader", then i switched off to try again.
The result was : error opening com port.
I searched a lot through forums, and i found in yours a topic with similar problem.
I soldered an USBasp to ISP pins and tried to Burn Bootloader with these settings:
Arduino Pro or Pro Mini (5v, 16MHz) w/ATmega328, and got this:
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: error: programm enable: target doesn't answer. 1
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
The board had both leds on and one yellow blinking, I checked again the connections, but got same problem.