Sense HAT (B)

Sense HAT (B) Sense HAT (B) for Raspberry Pi, Onboard Multi Powerful Sensors, Supports External Sensors

Information Categories: Expansions, Raspberry Pi Brand: Waveshare

Description Features --- Interfaces I2CAD

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Introduction

Sense HAT (B) for Raspberry Pi, Onboard Multi Powerful Sensors, Supports External Sensors. Can be plugged to Raspberry Pi directly.

Feature

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
• Onboard ICM20948 (3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetometer), detects movement, orientation, and magnetic
• Onboard SHTC3 digital temperature and humidity sensor, allows monitoring the environment
• Onboard LPS22HB barometric pressure sensor, allows monitoring the environment
• Onboard TCS34725 color sensor, identifies the color of nearby object
• Onboard ADS1015 ADC, 4-ch 12-bit precision, AD expansion to support more external sensors
• Brings I2C control pins, for connecting other host boards like STM32
• Comes with development resources and manual (examples for Raspberry Pi/STM32)

Specification

Specification of Sense HAT (B)

Working voltage	3.3V
Interface	I2C
Dimension	65mm x 30.5mm
Accelerometer	Resolution: 16-bit
	Ranging:±2/±4/±8/±16g
Gyoscope	Resolution: 16-bits
	Ranging:±250/±500/±1000/±2000°/sec
Magnetometer	Resolution: 16-bits
	Ranging:±4900µT
Barometer	Resolution:24-bits (Pressure), 16-bits(Temperature)
	Accuracy (ordinary temperature): ±0.025hPa
	Speed: 1 Hz - 75 Hz
Temperature & Humidity	Accuracy (humidity):±2% rH
	Ranging(humidity): 0% ~ 100% rH
	Accuracy(temperature): ±0.2°C
	Ranging(temperature): -30 ~ 100°C
Color sensor	Resolution: 4-channels RGBC, 16-bits per channel
ADC	Resolution: 12-bits

User Guides

Download examples

Download demo code from Demo codes. Unzip it and get the codes as below:

• ADS1015: ADC examples (STM32, BCM2835(Pi), WiringPi(Pi) and Python(Pi) four examples)   Device address:0x48
• ICM-20948： 9 axis sensor examples (STM32, BCM2835(Pi), WiringPi(Pi) and Python(Pi) four examples)   Device address:0x68
• LPS22HB: Barometric pressure sensor examples (STM32, BCM2835(Pi), WiringPi(Pi) and Python(Pi) four examples)   Device address:0x5C
• SHTC3: Temprature & Humidity sensor examples (STM32, BCM2835(Pi, WiringPi(Pi) and Python(Pi) four examples)   Device address:0x70
• TC34725: Color sensor example (STM32, BCM2835(Pi), WiringPi(Pi) and Python(Pi) four examples   Device address:0x29

Raspberry Pi examples

You should copy raspberrypi example to Raspberry Pi firstly. There are more than one examples, you can rename the folder and put them to one raspberrypi folder for easy using. You need to copy the examples to /boot of Raspberry Pi and then copy them to /home/pi

Libraries installation

Before you run examples, you should install related libraries.

• BCM2835 library:

wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.60.tar.gz sudo tar zxvf bcm2835-1.60.tar.gz cd bcm2835-1.xx sudo ./configure make sudo make check sudo make install

Note: You can also go to http://www.airspayce.com/mikem/bcm2835/index.html for newest libraries.

• wiringPi libraries

sudo apt-get install git sudo git clone git://git.drogon.net/wiringPi cd wiringPi sudo ./build

• Python libraries

sudo apt-get install python-pip sudo pip install RPi.GPIO sudo pip install spidev sudo apt-get install python-imaging sudo apt-get install python-smbus

Enable I2C interface

Before running examples, you also need to enable I2C.

Open terminal, run command sudo raspi-config to enter configuration menu

Choose Interfacing Options -> I2C -> Yes

Hardware connection

To connect the Sense HAT (B) to Raspberry Pi, you can directly add it on the 40PIN GPIO or wire it pin by pin.

Sense HAT (B)	Raspberry Pi
	Board	BCM2835
VCC	3.3V	3.3V
GND	GND	GND
SDA	3	P2
SCL	5	P3

1. ICM20948 examples

• bcm2835 example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/ICM-20948/wiringPi/bcm2835 sudo make sudo ./ICM20948_D

• WiringPi example

Open terminal of Raspbian, run example by command: cd ~/Sense HAT (B)/ICM-20948/Raspberry Pi/wiringPi sudo make sudo ./ICM20948_D

• python example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/LPS22HB/Raspberry Pi/python sudo python ICM20948.py

• Expected result:

To stop example, you can press Ctrl + C

2.LPS22HBTR example

Note: the temperature detection of air pressure sensor is only used as compensation. For accurate temperature detection, please observe the value of shtc3 temperature and humidity sensor.

• bcm2835 example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/LPS22HB/wiringPi/bcm2835 sudo make sudo ./LPS22HB

• WiringPi example

Open terminal of Raspbian, run example by command: cd ~/Sense HAT (B)/LPS22HB/Raspberry Pi/wiringPi sudo make sudo ./LPS22HB

• python example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/LPS22HB/Raspberry Pi/python sudo python LPS22HB.py

• Expected result:

To stop example, you can press Ctrl + C

3.SHTC3 example

Note: the raspberry PI's own heat will affect the actual measured temperature. The board has an I2C interface. If accurate ambient temperature is needed, the raspberry PI can be connected to the module at a distance and then tested by wire.

• bcm2835 example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/SHTC3/wiringPi/bcm2835 sudo make sudo ./SHTC3

• WiringPi example

Open terminal of Raspbian, run example by command: cd ~/Sense HAT (B)/SHTC3/Raspberry Pi/wiringPi sudo make sudo ./SHTC3

• Expected result:

To stop example, you can press Ctrl + C

4. TC34725 example

• bcm2835 example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/TC34725/wiringPi/bcm2835 sudo make sudo ./TC34725

• WiringPi example

Open terminal of Raspbian, run example by command: cd ~/Sense HAT (B)/TC34725/Raspberry Pi/wiringPi sudo make sudo ./TC34725

• python example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/TC34725/Raspberry Pi/python sudo python TC34725.py

• Expected result:

To stop example, you can press Ctrl + C

5. ADS1015 example

• bcm2835 example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/ADS1015/wiringPi/bcm2835 sudo make sudo ./ADS1015

• WiringPi example

Open terminal of Raspbian, run example by command: cd ~/Sense HAT (B)/ADS1015/Raspberry Pi/wiringPi sudo make sudo ./ADS1015

• python example

Open terminal of Raspbian, Compile codes and run example by command: cd ~/Sense HAT (B)/ADS1015/Raspberry Pi/python sudo python ADS1015.py

• Expected result:

To stop example, you can press Ctrl + C

STM32 examples

The STM32 examples are written based on STM32F103RBT6, it will print measuring result to UART 1.

Hardware connection

Sense HAT (B)	STM32
VCC	5V/3.3V
GND	GND
SDA	PB11
SCL	PB10

1. ICM20948 examples

1. Open the project 2. Compiling and download the project 3. Open serial SSCOM software, result are printed as below

2. LPS22HBTR examples

1. Open the project 2. Compiling and download the project 3. Open serial SSCOM software, result are printed as below

3. SHTC3 examples

1. Open the project 2. Compiling and download the project 3. LED 2 lights on if sensor work normally and LED lights on when humidity is larger than 80%

4. TC34725 examples

1. Open the project 2. Compiling and download the project 3. Open serial SSCOM software, result are printed as below

5. ADS1015 examples

1. Open the project 2. Compiling and download the project 3. Open serial SSCOM software, result are printed as below

Resources

• Schematic

Demo code

• Code

Datasheet

• ADS1015
• ICM-20948
• LPS22HBTR
• LSF0204
• SHTC3
• TCS34725

Support

Contact us Working hours: 09:00-18:00 (UTC+8 Monday to Saturday)