Datasheet

i2c-tools isn't strictly required, but it's a useful package since you can use it to scan for any

I2C or SMBus devices connected to your board. If you know something is connected, but

you don't know it's 7-bit I2C address, this library has a great little tool to help you find it.

python-smbus is required, it adds the I2C support for python!

Don't forget you must add kernel support for I2C by follo wing this

tuto rial! (http://adafru.it/dZY)

You can then detect if the HAT is found on the #1 I2C port with:

This will search /dev/i2c-1 for all address, and if an Adafruit PWM/Servo HAT is properly

connected and it's set to its default address -- meaning none of the 6 address solder

jumpers at the top of the board have been soldered shut -- it should show up at 0x40

(binary 1000000) as follows:

Once both of these packages have been installed, and i2cdetect finds the 0x40 I2C

address, you have everything you need to get started accessing I2C and SMBus devices

in Python.

sudo apt-get install python-smbus

sudo apt-get install i2c-tools

sudo i2cdetect -y 1

https://learn.adafruit.com/adafruit-16-channel-pwm-servo-hat-for-

raspberry-pi

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