Have assembled the Roboduino board and can not upload to it. The application where I am using this board required me to solder all of the headers on the bottom side of the board. I have checked all solder joints at least 4 times both physically and with a meter.
Am using the ATMEGA 128 chip.
When trying to upload a sketch I do not get any action from the "TX" led. Am getting the following errors.
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
So far my research seems to lead to a possibility that there is no boot loader on my chip?
Just for details, I am modifying a "Wall-e U-Control" with servos. The Roboduino is mounted where the batteries would normally go. When opening the battery compartment you see the Roboduino card. That is why I needed to mount the headers on the bottom of the board, so I could hook up the servos.
Any assistance or confirmation will be most appriciated.