I'm wondering if anyone in the community has worked with this board yet. I purchased it thinking that it would work out of the box with little problem on my old diecimila 168. There are no documents online for this product and its giving me a strange error running any code. I'm running arduino 0022 on my older mac and the most current version on the new mac.
avrdude: stk500_recv(): programmer is not responding
Please unplug the IO Expansion Board before uploading any program to your Arduino controller, because the RS485 bus and Serial Port are multiplexing Pin0 and Pin1 (TX/RX).
By the way, uploading may fail because the bootloader is broken. In this case, you have to re-write the bootloader.
If you have any questions please don't hesitate to contact us.
You can also free up the serial port by removing the jumpers outlined in yellow in this image (this disables xbee and rs485 but allows you to program with the shield attached)