Thanks for the additional information concerning the operation of the Shield board in relation to the operation of the bootloader at the time of program upload. A very interesting issue to say the least.
I don't know how many more computers I can try this on.... I am running out ;-)
I would like to see a video, not because I don't belive you but because I want to see how it reacts compared to mine. Please video from the beginning each step you do from power off to uploaded code showing your LED behaviour so we can compare. We are not the only ones having this problem, we are just the only ones working on it.
Hi Thomas, if the bootloader is diferent and programmed to pull down the pin d7 the shield will not work properly, is a fact. But is improbable that SF may changed the bootloader. Unless they burn the wrong loader, if that happens you will be unable to use it anyway. So I don't think so. I do believe that the problem is between the computer and the IDE. Because if you see the LEDs shutting off is because the shield is working.
Just o clarify the pin d7 must high in order to shoot it off and LOW to turn it on. When arduino enters in programing mode it always pull the pin d7 high (shutdown the gps), after the upload is complate it continues and pull down the pin d7 and the gps is power on again. I use it every day. Somebody would like see a video? Now maybe the bootloader is diferent and the version you have is not pulling up the pins.
Somebody with this problem that lives in South California? Would be nice have access to a problematic hardware.
I have been helping Fred troubleshoot his board on the other thread concering uploading problems with the GPS plugged into the Shield board.
If it helps at all, I have three of the Shield boards purchased at different times and on all three boards R1 is 1K.
I have not attempted to program my Ardupilot 328 board yet, but with the GPS plugged into the Shield board and power applied to the Ardupilot board, I get 4.3v on the base of Q1 and the GPS led does not come on. Also, I have both the Sparkfun FTDI (3.3v) board and the Adafruit FTDI cable to try programming the Ardupilot board once the GPS problem is resolved.
Comments
Thanks for the additional information concerning the operation of the Shield board in relation to the operation of the bootloader at the time of program upload. A very interesting issue to say the least.
Regards,
TCIII
I would like to see a video, not because I don't belive you but because I want to see how it reacts compared to mine. Please video from the beginning each step you do from power off to uploaded code showing your LED behaviour so we can compare. We are not the only ones having this problem, we are just the only ones working on it.
Are you intimating that Sparkfun may have changed the bootloader on Ardupilots with the Atmega 328?
Regards,
TCIII
Somebody with this problem that lives in South California? Would be nice have access to a problematic hardware.
R1 measured at 1K
Fred
I have been helping Fred troubleshoot his board on the other thread concering uploading problems with the GPS plugged into the Shield board.
If it helps at all, I have three of the Shield boards purchased at different times and on all three boards R1 is 1K.
I have not attempted to program my Ardupilot 328 board yet, but with the GPS plugged into the Shield board and power applied to the Ardupilot board, I get 4.3v on the base of Q1 and the GPS led does not come on. Also, I have both the Sparkfun FTDI (3.3v) board and the Adafruit FTDI cable to try programming the Ardupilot board once the GPS problem is resolved.
Regards,
TCIII
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