Post the biggest problem you've had on your project to date and how you solved it!
Scott Bertics -- My biggest problem involved properly configuring the xbee's for wireless communication. I solved this by reading/ memorizing the datasheet, buying an xbee explorer chip, and finding several tutorials on xbee configuration.
Casey -- My biggest problem was making the sensor grid detect multiple chess pieces; the power would spread backwards through the grid. I solved this by adding diodes on the power lines to keep the electricity from going where it shouldn't.
Richard -- My biggest problem was how to prevent the contacts on the perf-board from shorting, I solved this by heat-shrinking the leads where they were in close proximity to each other.
Jorge Ramirez-- My biggest problem was to learn how to use the laser cut, but asking to Bianca and thanks to Benjamin I learn quickly and I could get my device hardcase.