- beta testing a new functionality for those encasing the GO's and looking for a way to power it on and off.  First enable the power switch by setting #define USEPOWERSWITCH to a 1. Next connect a push button switch between Digital pin D11 and Ground.  Simply hold the switch down for about 3 seconds and the entire device will go into a deep sleep mode.  Current consumption is about 700u amps.  To turn the unit back on again, simply press the button and hold for about another three seconds and the unit will wake up.