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Qwiic pHAT for Raspberry Pi Hookup Guide
learn.sparkfun.com/tutorials/qwiic-phat-for-raspberry-pi-hookup-guide
Introduction
This Qwiic pHAT [v2.0 and v1.0] for Raspberry Pi is based on the Qwiic Hat. The board
adds the quickest and easiest way to utilize SparkFun's Qwiic ecosystem while still using
that Raspberry Pi that you've come to know and love. This Qwiic pHAT connects the I C
bus (GND, 3.3V, SDA, and SCL) on your Raspberry Pi to an array of Qwiic connectors.
Since the Qwiic system allows for daisy chaining (as long as your devices are on
different addresses), you can stack as many sensors as you'd like to create a tower of
sensing power!
Required Setup Tools
As a desktop, these devices are required:
USB Mouse
2
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Summary of content (9 pages)

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Qwiic pHAT for Raspberry Pi Hookup Guide learn.sparkfun.com/tutorials/qwiic-phat-for-raspberry-pi-hookup-guide Introduction This Qwiic pHAT [v2.0 and v1.0] for Raspberry Pi is based on the Qwiic Hat. The board adds the quickest and easiest way to utilize SparkFun's Qwiic ecosystem while still using that Raspberry Pi that you've come to know and love. This Qwiic pHAT connects the I2C bus (GND, 3.3V, SDA, and SCL) on your Raspberry Pi to an array of Qwiic connectors.
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USB Keyboard HDMI monitor/TV/adapted VGA 5V Power Supply Hardware Overview Qwiic pHAT v2.0 I2C Pins The Qwiic pHAT has 4x Qwiic connect ports, all on the same I 2C bus. There are two vertical Qwiic connectors located at the center and two horizontal connectors on the right side. 5V Power If you need to power a device with 5V, we have broken out the Raspberry Pi's 5V and GND pins on the side with a screw terminal. Depending on your project, you can also solder to the PTH pads.
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General Purpose Button Included on the board is a general purpose button connected to GPIO17. You can use the button however you would like but we found it useful to shutdown or reboot a Raspberry Pi with a Python script. Jumpers There are built-in pull-up resistors on board. If necessary, you can cut the traces to disable depending on the number of boards connected to the I2C bus.
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Board Dimensions The board is about 65.00mm x 30.50mm. There are six mounting holes on the board. Two pairs of mounting holes were optimized to easily mount Qwiic devices that have the standard 1.0"x1.0" sized board. Qwiic pHAT v1.0 I2C Pins The Qwiic pHAT has 4x Qwiic connect ports, all on the same I 2C bus. A 3.3V regulator is included to regulate voltage down for any Qwiic boards connected.
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Jumpers There are built-in pull-up resistors on board. If necessary, you can cut the traces to disable depending on the number of boards connected to the I2C bus. Board Dimensions The board is about 65.00mm x 30.50mm. There are six mounting holes on the board.
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Hardware Assembly To get started with your Qwiic pHAT, simply plug it into the headers on the Raspberry Pi with the letters facing you. We'll use the Qwiic pHAT v1.0 in the following images to connect a Qwiic device. Once the pHAT is plugged in, you can start plugging in any Qwiic enabled sensors.
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Standoffs and Mounting Holes Depending on your project, you can mount a qwiic enabled board on the mounting holes using standoffs. Below are two images showing Qwiic devices mounted on each version of the Qwiic pHAT. Qwiic Devices Mounted on v2.0 Qwiic Device Mounted on v1.0 Stackable Headers When placing a Raspberry Pi and the pHat in an enclosure (like the Pi Tin), we noticed that the pHAT was not fully inserted in Pi's header pins.
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Otherwise, the original Qwiic HAT would be better if you need to using the boards in an enclosure. I2C on Raspberry Pi OS and Library Install If you're starting from scratch, with a blank microSD card, you'll want to install Raspbian. If you've already got a working Raspbian system, skip ahead to step 3. 1. Download the NOOBS image. As of this writing, it's at version 2.4.4. 2. Follow the official installation instructions. 3.
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Like the SPI peripheral, I2C is not turned on by default. Again, we can use raspi-config to enable it. 1. 2. 3. 4. 5. Run sudo raspi-config . Use the down arrow to select 5 Interfacing Options Arrow down to P5 I2C . Select yes when it asks you to enable I2C Select OK and then Finish Once you return to terminal, enter this command: >ls /dev/*i2c* The Pi should respond with: /dev/i2c-1 Which represents the user-mode I2C interface.