EKG-EMG_arduino mega

[acreen]

Hello, I am using this the EKG-EMG shield with the arduino mega 2560. I uploaded the demo code provided on the product page and downloaded both elecguru and brainbay. I plugged the usb connector to the computer, selected the correct port and ran the program. How can I determine if it is the electrodes or the shield that is defective? I am relatively new to arduino and olimex.

[olimex]

how did you connected our shield to the Mega? they have different connectors

[acreen]

The shield pins lined up with the arduino mega so I just placed it on top (electrode jack on the same side as the arduino power and usb connector). I aligned the pins accordingly (RST -> Reset, etc.). The power led did light up red.

http://www.arduino.cc/en/Main/arduinoBoardMega

[olimex]

I'm not sure these are compatible, we only have /use our Aruino boards (compatible with Uno) with this shield
for Mega you should check the schematics and probably change the code to may work with Mega

[acreen]

for the code, if I want to plot the signal on an lcd, what values do I need to use? the txbuf?

[acreen]

I figured it out. I have another question. If I want to place a shield on top of the olimex ekg, it cannot use the digital 9 and 4 output, correct?

[LubOlimex]

Only one of the D4/D9 signals would be taken (depending on the jumper position - for instance, if it is in D4 position D9 signal would be free). D4/D9 jumper is placed so the shield can fit all boards.

Best regards,
Lub/OLIMEX