sparkfun BeagleBone Black Proto Cape Technical document

BeagleBone Black Proto Cape Hookup Guide


Board Overview
The BeagleBone Black Proto Cape is a great way to prototype or design
custom capes for the BeagleBone Black. This cape gives you access to all
gpio available on the BeagleBone Black. There are also two red LED’s
available for user applications. The included EEPROM lets the user
prototype cape description files, which are used by the BeagleBoard
Foundation to register boards.
Suggested Reading
Before you start, we recommend the following background knowledge:
• How to Solder
• Working with Wire
• Logic Levels
Assembly
First let’s solder some headers to the cape. There are two styles of headers
you may choose from.
If you only plan on using one cape, straight headers will do just fine.
Page 1 of 4

Header 2x23 (PRT-12791)
If you plan to use multiple capes, it is necessary to use stackable headers.
Stackable Header 2x23 (PRT-12790)
Soldering Headers
It is important when soldering the headers that they are held in straight.
Tack two opposite pins and check the alignment before finishing the rest of
the pins. When you are complete allow the cape to cool before inserting.
Removing capes can be quite difficult. Do not try to pull them off in one
motion. Try to rock or slowly apply pressure to the corners. Separating in
this fashion will prevent the pins from being bent.
Page 2 of 4

Let’s take a look at how the prototyping area is laid out.
Proto Area
There is plenty of space on which to prototype. There are two power buses
provided along with ground connections on both sides of the board, all .1"
spaced through holes.
Two LED’s have been provided for quick and easy debugging or general
purpose use.
Simply apply a current to each LED to illuminate. They work with both 3.3v
and 5v inputs.
Now, let’s look at the EEPROM and its features.
Using the EEPROM
Page 3 of 4

The Cape EEPROM is great for storing pin configuration data. The cape
EEPROM is read by the BeagleBone Black during boot. It can then
automatically setup the pins for use. There are several steps to understand
how the EEPROM is used. For now, we will show you the possible settings
available. The cape comes with a blank EEPROM.
The default address for the EEPROM is 0x57. You can change it to
addresses 0x54 - 0x57 with the selection of the two address jumpers. They
are Labled A0 and A1. Changing the address of the Cape is important
when you are using multiple capes.
Address Table
A2A1A07-bit address
100 0x54
101 0x55
110 0x56
111 0x57
Once you have created your next great thing you can register your settings
with the BeagleBone foundation. This registration allows them to upload
your settings to the latest operating system available. This removes the
need for users to setup their board to use your cape.
Resources and Going Further
Now, go forth and build something awesome! Here are some additional
links to get you started using the BeagleBone Black.
Further reading:
• BeagleBone Black Homepage
• Bone Script Library Support
If you have any problems or questions, our technical support department
can help. Please don’t hesitate to contact us. We also love to hear about
your projects!
Page 4 of 4
11
/
16
/
201
5
htt
p
s://learn.s
p
arkfun.com/tutorials/bea
g
lebon
e
-
b
lac
k
-
p
rot
o
-ca
pe
-hooku
p
-
g
uide?
_g
a=1.
3
...