I have just bought my first ARDUINO UNO three days ago....nothing to say.
NICE JOB, GUYS!
I just have a little suggestion: look at the ARDUINO UNO lay-out of the upper row, the one with the digital out pins.
Well, the step for the all row is NOT 2,54 mm!! (See picture attached)
So, if I have a complete connector of 17 pins (16 connected and one left in the middle of the two female connectors placed on the board) I cannot connect it to the board! This means that I have to cut my piggyback board, and split it in two pieces. Not so nice
The bottom one is ok.
I hope you will correct it in the future
Thanks and...go on with this nice idea!!