While most Arduino shields run at 5V, the pcDuino runs at 3.3V. Directly connecting a 5V shield to the pcDuino will cause immediate damage. This shield safely marries 5V Arduino shields with the 3.3V pcDuino. This shield sits between the pcDuino and the 5V shield and provides bi-directional voltage translation. Dimensions: 70(L) x 50(W) x 4(D)mm
