Silicon Laboratories Sensor-EXP-EVB User Manual

Sensor EXP EVB UG

Sensor EXP Evaluation Board USER’S GUIDE

1. Introduction

This Sensor-EXP-EVB is a hardware plugin 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 Sensor-EXP-EVB 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 Sensor-EXP-EVB.
You will need to connect the Sensor-EXP-EVB 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. 0.2 5/14 Copyright © 2014 by Silicon Laboratories Sensor EXP EVB UG

Sensor EXP 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 Sensor-EXP 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.

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Figure 1. Simplicity Studio

Sensor EXP EVB UG

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Figure 2. Device Detection

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Sensor EXP EVB UG

Figure 3. Select Demos

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