Hu m id it y /Te m p /O pti cal E VB UG
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U MI D I T Y
/ T
EMPERATURE
/O
PTICAL
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ENSOR
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X PA N S I O N
B
OARD
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1. Introduction
The SLSTK3201A Zero Gecko Starter Kit includes a Humidity/Temp/Optical Expansion Board (BRD8001A) and a
EFM32ZG-STK3200 Zero Gecko STK. This document describes the Humidity/Temp/Optical Expansion Board and
a weather station demo based on it.
The Humidity/Temp/Optical Expansion Board is a hardware plug-in card for the EFM32 starter kits (STKs). It
contains the Si7013 humidity and temperature sensor as well as the Si1147 UV and proximity sensor. A weather
station software demo is available to download to the Zero or Tiny Gecko STK through simplicity studio. When
downloaded to the EFM32ZG-STK3200 Zero Gecko STK or the EFM32TG-STK3300 Tiny Gecko STK, the demo
displays humidity, temperature, and UV index and performs gesture detection. Right or left gestures move the
display type and, on the temperature screen, up or down gestures move the display between °C or °F.
1.1. Features
Si7013
Humidity and Temperature sensor
Si1147 proximity sensor
3 IR LEDs for gesture detection
20-pin expansion header
Battery operation with long battery life
1.2. Getting Started
The first step to get started with your new Humidity/Temp/Optical Expansion board is to go to
www.silabs.com/
simplicity-studio.
The simplicity studio software package contains all the tools, drivers, software examples and documentation
needed to use the Humidity/Temp/Optical Expansion board.
You will need to connect the Humidity/Temp/Optical Expansion board to the EFM32ZG-STK3200 Zero Gecko STK
or the EFM32TG-STK3300 Tiny Gecko STK. The demo code can be loaded using the USB cable and J-Link debug
interface.
Rev. 0.1 6/14
Copyright © 2014 by Silicon Laboratories
Humidity/Temp/Optical EVB UG
Humidity/Temp/Optical EVB UG
2. Weather Station Demo
2.1. Loading the Demo
Connect the USB cable to the STK and launch Simplicity Studio. Click on “Detect connected device” then click on
the Demos button (top right) and select the weather station demo from the list. Make sure the Bat/Dbg switch on
the STK is set to DBG and click Start to download the demo. The following figures show the Zero Gecko STK
screens.
Figure 1. Simplicity Studio
2
Rev. 0.1
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