Raspberry PI: All IPs up on the LAN? HD

Full write up with source code at: http://www.whiskeytangohotel.com/2016/09/keep-tabs-on-devices-connected-to-your.html Raspberry PI Zero checks all devices on the LAN. GREEN flash means all is well. RED flash denotes a down LAN device. The ping and IP status history is logged to a Google Drive Sheet.