request PID 5741 for ArduPilot (#491)

Author: tridge

1209/5741/index.md

@@ -0,0 +1,24 @@
+---
+layout: pid
+title: autopilot
+owner: ArduPilot
+license: GPLv3
+site: http://www.ardupilot.org/
+source: https://github.com/ArduPilot/
+---
+The ArduPilot project supports many open source hardware designs. We
+don't design the hardware ourselves (we are a software project), but
+we work closely with many organisations and companies that do make
+open source hardware. For those that don't have their own VID we use a
+single VID/PID pair for all boards, then distinguish boards using the
+product ID strings in the bootloader and application firmware. 
+
+Schematics for some of the boards we support are here:
+
+  https://github.com/ArduPilot/Schematics
+
+We use two PIDs, 5740 and 5741. We need two in order to support both
+single endpoint and dual-endpoint CDCACM devices on
+windows. Dual-endpoint devices need to have a different PID from
+single endpoint in order to install the correct driver.
+