update
My UNO works just fine with the skylab GPS chip
serial is normal and the up load is normal -- at 9600 b
but all the megas (genuine and 'china') are extremely slow even when the computer says the device is working properly at 9600
update
My UNO works just fine with the skylab GPS chip
serial is normal and the up load is normal -- at 9600 b
but all the megas (genuine and 'china') are extremely slow even when the computer says the device is working properly at 9600