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SparkFun Weather Shield

4 years ago 1003
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Description: The Weather Shield is an easy to use Arduino shield that grants you access to barometric pressure, relative humidity, luminosity and temperature. There are also connections on this shield to optional sensors such as wind speed, direction, rain gauge and GPS for location and super accurate timing.

These Weather Shields utilize the HTU21D humidity, MPL3115A2 barometric pressure, and ALS-PT19 light sensors and relies on the HTU21D and MPL3115A2 Arduino libraries. Each shield comes with two unpopulated RJ11 connector spaces (for optional hook up of rain and wind sensors) and a 6-pin GPS connector (for optional hook up of a GP635T GPS module). Finally, each Weather Shield can operate from 3.3V up to 16V and has built in voltage regulators and signal translators.

Note: The Weather Shield comes as a stand-alone board. Headers, connectors, and additional sensors will need to be purchased separately, check the related items or wish list below!

Note: This shield was designed for the SparkFun Redboard and Arduino Uno and will not work with other boards (like the Arduino Yun, for example) without modification.


Humidity/Temperature Sensor - HTU21D Barometric Pressure - MPL3115A2 Light Sensor - ALS-PT19

For more detail and Documents, Please visit:


Weather Shield


ID Name Designator Footprint Quantity
1 0.1uF C2,C7,C6 C-0603 3
2 Green D3 L-0603 1
3 3.3V MIC5219 U2 SOT23-5 1
4 Blue D1 L-0603 1
5 1uF C1,C8 C-0603 2
6 MPL3115A2 U4 LGA8 1
7 0.1uF C5 0603-CAP 1
8 HTU21D U5 HTU21D 1
9 Serial Select S2 AYZ0202 1
10 10uF C13,C14 EIA3216 2
12 BSS138 Q1,Q2 SOT23-3 2
13 RJ11-WIND JP10-DNP RJ11-6 1
14 RJ11-RAIN JP9-DNP RJ11-6 1
15 BAS16 D9,D10,D7,D8,D5,D6 SOD-323 6
16 External Batt Bckup JP2 1X02 1
17 ALS-PT19 U3 ALS-PT19 1
18 GP-635T J1 GP-635T 1
19 1k R1,R6,R7,R11,R12,R13,R14,R15,R16 3-0603 9
20 4.7k R2,R3,R4,R5,R9,R17 3-0603 6
21 3.9k R8 3-0603 1
22 10k R10 3-0603 1




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