Find all your DIY electronics in the MakerShed. 3D Printing, Kits, Arduino, Raspberry Pi, Books & more!


The Monday Jolt

The Monday Jolt is a column about microcontrollers and electronics that appears in MAKE every Monday morning.
Raspberry Pis

Credit: Frank Carver

The Raspberry Pi isn’t just a single board any more, there are a growing number of different variants available. Unfortunately they all look rather similar, and sometimes it can be important which board is which. Fortunately there are a number of ways to figure out which board you have. One easy method is to type the following on the command line,

cat /proc/cpuinfo

which should get you something that looks a lot like this,

Processor : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : 697.95
Features : swp half thumb fastmult vfp edsp java tls 
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7
Hardware : BCM2708
Revision : 000f
Serial : 00000000d298cfc1

This tells us the revision code (0x0f) of the board, and from that, and the excellent work that Frank Carver has done compiling a list of what those revision codes mean, we can tell than my board is a Revision 2 Model B with; 512MB RAM, Ethernet, two USB sockets, five LEDs, mounting holes, Pin3=GPIO1, Pin5=GPIO2, Pin13=GPIO27, 12C-1, 8 extra IO pads (P5).

Interestingly, since each manufacturer of the Raspberry Pi has been assigned a unique revision number I can also tell that my board was made by Qisda, who have manufacturing sites in China, Mexico and Taiwan. Since it’s written on the board, I know my board was made in China, so it must have been manufactured in Suzhou.

Alasdair Allan

Alasdair Allan is a scientist, author, hacker and tinkerer. He spends much of his time probing current trends in an attempt to determine which technologies are going to define our future, mainly because it’s fun to be proved right, but much more fun to be proved wrong.

blog comments powered by Disqus

Related Supplies at Maker Shed


Get every new post delivered to your Inbox.

Join 26,593 other followers