Parts and Suppliers - BeagleBone - page 650

Integrated Circuits
The PCA9306 is a small integrated circuit (IC) that converts voltage levels between 3.3 V
and 5 V. You can get it cheaply in large quantities from DigiKey , but it's in a very small,
hard-to-use, surface-mount package. Instead, you can get it from SparkFun on a Breakout
board , which plugs into a breadboard.
The L293D is an H-bridge IC with which you can control large loads (such as motors) in
both directions. SparkFun , Adafruit , and DigiKey all have it in a DIP package that easily
plugs into a breadboard.
The ULN2003 is a 7 darlington NPN transistor IC array used to drive motors one way. You
can get it from DigiKey . A possible substitution is ULN2803 available from SparkFun and
Adafruit .
The TMP102 is an I 2 C-based digital temperature sensor. You can buy them in bulk from
DigiKey , but it's too small for a breadboard. SparkFun sells it on a breakout board that
works well with a breadboard.
The DS18B20 is a one-wire digital temperature sensor that looks like a three-terminal tran-
sistor. Both SparkFun and Adafruit carry it.