If you just need to interface one probe with a computer and want everything to work, you should probably buy a Vernier Go!Link, but I was looking for something a little less expensive and more DIY.
Step 1: Required Materials
For testing I used the TI Light Probe , since it was handy and I could test the sensor output by pointing it at the window or covering it with my hand, but this should work with any analog Vernier sensors .
You'll also need some short wires and perhaps a breadboard. A BT631A jack also makes things easier.
Step 2: Hardware Setup
pin 6 (closest to the clip) is sensor output (0 to 5 V)
pin 5 is power (5 V)
pin 2 is ground
Using some short wire, you'll connect those pins to A0 (labelled F0 on the board), VCC, and GND on the Teensy. Feel free to use a breadboard or solder them in place. I just bent the wires around for testing purposes.
To connect at the sensor end, I ordered a BT to RJ11 adaptor from DealExtreme , but unfortunately it's only 6P4C and we need 6P6C (6 conductors) to connect to pin 6. I'll try ordering something from UXCell or Vernier , but for now I've just used some breadboarding wires stuck into the back of the female connector.
Before you connect the USB cable from your Teensy to the computer, make sure the software is set up.