In the upper left hand corner of the board you can see the GPIO header. Below that is the P5 header footprint, a 2×4 series of vias. You won’t see the P5 label until you flip the board over.
Now, there are some folks that will tell you the only way to get to the second I2C bus is to access the camera S5 header (or the S2 header). That would involve some incredible soldering work, or a socket. I don’t have the socket, and my hands aren’t good enough to solder at that pitch.
However, I can solder that P5 header. The unfortunate thing is that the P5 header is really close to the GPIO header. Using the P5 header while using Lady Ada’s Pi Cobbler header may be problematic. I took some long headers and soldered them in place, at a slight angle….
Each Friday is PiDay here at Adafruit, be sure to check out our posts, tutorials and new Raspberry Pi related products. Have you tried the new “Adafruit Raspberry Pi Educational Linux Distro” ? It’s our tweaked distribution for teaching electronics using the Raspberry Pi. But wait, there’s more! Try our new Raspberry Pi WebIDE! The easiest way to learn programming on a Raspberry Pi.
We now have Raspberry Pi Model B with 512MB RAM in stock and shipping now!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Samsung & Batteries
Wearables — Vintage cosplay resources
Electronics — Hummm… 60Hz noise in your amplifier driving you nuts?
Biohacking — Logging the Temperature Around Me
Sorry, the comment form is closed at this time.