Asked
— Edited
How many Ez-b4's do you think it would take to control this spider? this is nice I wish I could have seen it in person.. 
Sphero Movement Panel
— Control Sphero via Bluetooth in ARC. Detects two COM ports (one connects); requires deleting and re-pairing after disconnects or reboots.
Try it →
Very cool. Looks like all Hydraulics and is build and operated like a backhoe. I see the "driver" operating leavers near the head.