Silicon Laboratories Sensor-EXP-EVB User Manual
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Silicon Laboratories Sensor-EXP-EVB User Manual

Silicon Laboratories Sensor-EXP-EVB User Manual

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Sensor EXP Evaluation Board U
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
Sensor EXP EVB UG
Copyright © 2014 by Silicon Laboratories
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Sensor EXP EVB UG

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Summary of Contents for Silicon Laboratories Sensor-EXP-EVB

  • Page 1 UIDE 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.

  • Page 2: Weather Station Demo

    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.
  • Page 3 Sensor EXP EVB UG   Figure 2. Device Detection Rev. 0.2...
  • Page 4 Sensor EXP EVB UG Figure 3. Select Demos Rev. 0.2...
  • Page 5 Sensor EXP EVB UG   Figure 4. Demo Selection Rev. 0.2...
  • Page 6 To initiate a proximity event, hold your hand (with fingers closed) over the Sensor-EXP-EVB. Once the proximity event has been detected, gesture detection is enabled. The gesture control state is fairly high-power compared to the idle state, so the code will automatically terminate gesture detection after one minute of inactivity.

  • Page 7: Block Diagram

    Sensor EXP EVB UG 3. Block Diagram VMCU (Battery) All other lines Battery to INTERFACE LEDs converter Si1147 UV Proximity sensor Si7013 Humidity and Temperature sensor Figure 6. Sensor EXP Component Layout Rev. 0.2...

  • Page 8: Exp Hardware Layout

    Sensor EXP EVB UG 4. EXP Hardware Layout 4.1. Sensor-EXP-Evaluation Board Si1147 UV and proximity sensor IR LEDs Si7013 Humidity and I2C ribbon connector Temperature sensor EXP connector for EFM32 STK Figure 7. Assembled Demo Platform Rev. 0.2...
  • Page 9 Sensor EXP EVB UG 4.2. Sensor-EXP-EVB Connected to Zero Gecko STK Figure 8. Sensor-EXP-EVB Connected to Zero Gecko STK Hover hand to create a proximity event (Figure 9). Figure 9. Hover Gesture Swipe hand right or left to change display (Figure 10). Swipe up and down to change temperature display units.

  • Page 10: Schematics, Assembly Drawings And Bom

    EFM32 STK board. This connector is not currently compatible with Wonder, Giant, or Leopard Gecko STKs. However, with hardware modifications, the sensor-EXP-EVB can be used with these STKs as well. On the right hand side of the board there is another connector to allow connection to another plugin card. J6 is a flat ribbon cable connector to connect other devices such as additional sensors to the I C bus.

  • Page 11: Document Change List

    Sensor EXP EVB UG OCUMENT HANGE Revision 0.1 to Revision 0.2  Added Tiny Gecko.  Updated Figure 7 on page 8.  Updated Figure 8 on page 9.  Updated Figure 9 on page 9.  Updated Figure 10 on page 9. Rev.
  • Page 12 The products are not designed or authorized to be used within any Life Support System without the specific written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death.

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