What steps will reproduce the problem?
1.rosws set phidgetspp_c_api --hg 
https://phidget.foote-ros-pkg.googlecode.com/hg/
2.
3.

What is the expected output? What do you see instead?
Updating /home/lennart/fuerte_workspace/phidgets_ros
[phidgets_ros] Done.
[phidgetspp_c_api] Installing https://phidget.foote-ros-pkg.googlecode.com/hg 
(version None) to /home/lennart/fuerte_workspace/phidgetspp_c_api
WARNING [vcstools] Command failed: 'hg clone 
"https://phidget.foote-ros-pkg.googlecode.com/hg" 
/home/lennart/fuerte_workspace/phidgetspp_c_api'
 errcode: 255:
abort: phidget.foote-ros-pkg.googlecode.com certificate error: certificate is 
for *.googlecode.com, *.u.googlecode.com, googlecode.com, *.codespot.com, 
*.googlesource.com, googlesource.com (use --insecure to connect insecurely)
[/vcstools]
Exception caught during install: Error processing 'phidgetspp_c_api' : 
[phidgetspp_c_api] Checkout of https://phidget.foote-ros-pkg.googlecode.com/hg 
version None into /home/lennart/fuerte_workspace/phidgetspp_c_api failed.

ERROR: Error processing 'phidgetspp_c_api' : [phidgetspp_c_api] Checkout of 
https://phidget.foote-ros-pkg.googlecode.com/hg version None into 
/home/lennart/fuerte_workspace/phidgetspp_c_api failed.


Please use labels and text to provide additional information.
I am trying to install the phidget library on ROS on a Raspberry Pi. Installed 
the drivers from 
http://www.phidgets.com/downloads/libraries/libphidget_2.1.7.20100621.tar.gz
Installed phidgets_py_api and phidgets_ros using rosws. But it doesn't seem to 
work. The whole installation procedure is not really clear to me, perhaps a 
step by step plan can be posted on ROS.org?