Vernier Shield Hookup Guide
bri_huang 
Connecting an External Display
Adding an external display greatly enhances the ability to interface to the Vernier sensors independent of having a computer. The Arduino can be powered off a few AA batteries, and adding an LCD display will allow you to provide immediate feedback to the user.
What you'll need
- Male Break-away Headers
- Female Break-away Headers
- Serial LCD or Serial Seven Segment
- Hook-up wire - 6" M/F or 12" M/F
Recommended Reading / Useful Resources
Getting Started
You'll need to solder on the male break-away headers to access pins D0 and D1. These will be used to transmit / send data to your Serial display device. You will also need to add headers to the power pins (5V and GND). We suggest using the female headers for this, though. Having power and GND exposed creates a risk of a short-circuit. Thankfully, the Arduino has a PTC resettable fuse that will protect your computer and the Arduino from this, but it should still be avoided.
The example code will vary depending on the Serial device you are using. You will need to connect Power (5V), GND, and the Transmit (Pin 1) on the Vernier Shield to your serial display device. Remember: the TX line should go to the RX line on the serial device.