Weather station

Weather station related items
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Soil Hygrometer Humidity Detection Moisture Sensor (2B4 moisture probe)

This is a summary of the soil moisture sensor that can be used to detect moisture, when the soil is dry, the module outputs a high level. Use this sensor to build an automatic watering system.


Operating voltage: 3.3V~5V.
Adjustable sensitivity (blue digital potentiometer adjustment)
Dual output mode,analog output more accurate.
A fixed bolt hole for easy installation.
Power indicator (red) and digital switching output indicator (green).
LM393 comparator chip, stable.
PCB Dimension: 3cm x 1.5cm.
Soil Probe Dimension: 6cm x 2cm.
Cable Length: 21cm.

VCC: 3.3V-5V.
GND: GND.
DO: digital output interface (0 and 1).
AO: analog output interface.


Package Includes:

1 x Soil moisture detector module
1 x Probe
5 x Jumper Cables

R29.90  Inc VAT
DHT11 Temperature and Relative Humidity Sensor Module (2B3 DHT11 temp/humid)

Product information
This module can detect humidity and temperature of the surrounding environment. Outputs a digital signal. Has a mounting hole for easy installation. Includes 3 DuPont wires to interface to microcontroller.

Specifications
Humidity measurement range: 20%~90% RH
Humidity measurement error: ±5% RH
Temperature measurement range: 0~60 Cƒ
Working voltage: 5V
Size: 28 x 12 x 8mm

Package includes
1 x DHT11 Temperature and Relative Humidity Sensor Module

R45.00  Inc VAT
AM2302 DHT22 Temperature And Humidity Sensor Module (2B3 DHT22 temp/humid)

Features:

AM2302 Humicap digital temperature and humidity module is a digital output signal containing a calibrated temperature and humidity combined sensor. It uses dedicated digital module capture technology and temperature and humidity sensor technology to ensure that products has high reliability and excellent long-term stability. Sensor includes a capacitive humidity sensing element and a high-precision temperature measurement device, and with a high-performance 8-bit microcontroller connected. Therefore, the product has excellent quality, fast response, anti-interference ability, low cost and other advantages. Ultra-small size, low power consumption, signal transmission distance up to 20 meters. Making it the best choice for all kinds of applications and even the most demanding applications.

Applications:

HVAC (Heating Ventilation Air Conditioning), dehumidifiers, testing and inspection equipment, consumer goods, automotive, automation, data loggers, home appliances, humidity regulator, medical,weather stations, and other related humidity detection control.

Specification:

Dimensions: 40 x 23mm
Weight: 4g
Voltage: 5V
Port: digital two-way single bus
Temperature range: -40 to 80 °C ± 0.5 °C
Humidity: 20 to 90% RH ± 2% RH
Platform: Arduino, SBC

Package includes:

1 x Sensor Module

R109.00  Inc VAT
The Weather Board w/Grove - Interface board for Weather Instruments for Raspberry Pi / Arduino (3A3 weather board)

Want to build a Weather Station with the board?

Look at these two sources (more on the way):

 

WeatherBoard Specification - http://www.switchdoc.com/wp-content/uploads/2016/07/WeatherBoard_CurrentSpecification.pdf

 

New GroveWeatherPi Tutorial - http://www.switchdoc.com/2016/08/tutorial-part-1-building-a-solar-powered-raspberry-pi-weather-station-groveweatherpi/

 

Weather Board[/caption] The Weather Board is a weather station controller board designed to interface to Arduino and Raspberry Pi computers.  It is an interface board developed by SwitchDoc Labs to allow the user to easily build a fully functioned Weather Station while allowing customization of functions. The Weather Board is derived from Project Curacao and the WeatherPiArduino.  Generation 1 of this board was deployed and tested in Curacao before Generation 2 was released to production.  The full WeatherPiArduino article was published in Raspberry Pi Geek magazine in September, 2014 and a follow up article has been published in April, 2015 (including the new lightning detector).  The Weather Board comes with a SwitchDoc Labs DS3231/EEPROM board. Combine the Weather Board with a SunAir or SunAirPlus board to create a solar powered weather station.

 Block Diagram



Jumper and pug locations

Downloads for the Weather Board

New!    The new Weather Board software auto detects your weather devices and can be configured for the MOD-1016G Lightning Detector and SunAirPlus for Solar Power.

  • Arduino Software is here.
  • Arduino Software for the WeatherRack and the Weather Board is here.
  • Raspberry Pi Software is here.
  • WeatherRack Software can be found here.
  • You can download the Full Weather Board Specification here .   The specification contains wiring lists for connecting the Weather Board to the Raspberry Pi and the Arduino family of products.

Interfaces on Weather Board

  • I2C for Raspberry Pi and Arduino (Board works at 3.3V and 5V)
  • RJ11 Plugs installed for SwitchDoc Labs WeatherRack, etc.
  • Wind Vane, Rain Bucket, Anemometer computer connections for Raspberry Pi and Arduino
  • Grove Connections for all interfaces

I2C devices Included with the Weather Board

Plug in I2C Interfaces provided

  • Embedded Adventures I2C Lightning Detector MOD-1016 board
  • Adafruit HTU21D-F Temperature/Humidity breakout board
  • Adafruit 32KB FRAM I2C breakout board
  • Adafruit ADS1015 4 Channel A/D I2C board

I2C Device Specifications

BMP280 (Barometer / Temperature) DS3231 (Real Time Clock) AT24C32 (EEPROM) ADS1015 (12 bit ADC) AS3935 (MOD-1016 - Lightning Detector) HTU21D-F (Humidity) FRAM (32KB Fast Non-Volatile Storage)

Want to build a control panel for the Weather Board?  Look at this post and the picture below:

 The SDL_Weather_80422 class library is designed to provide all the functions of the SwitchDoc WeatherRack, ArgentData Weather Sensors,  SparkFun Weather Meters SEN-08942 in one C++ class. The library is easy to use and hides the complexity of the interface to the sensors.  The C++ class has two Interrupt Service Routines (ISR), one each for the anemometer and the rain bucket.  The wind vane is connected to an Analog to Digital Converter (ADC) input pin on the Arduino.  Note that the C++ class is designed to be a singleton, in other words, you only can interface one sensor package without some additional work (mostly involving Interrupts).  The article in Raspberry Pi Geek magazine discusses this in detail. There are two main modes for the class.

SDL_MODE_SAMPLE

SDL_MODE_SAMPLE mode means return immediately after asking for the wind speed. The wind speed is averaged at sampleTime or since you last asked, whichever is longer. If the sample time has not passed since the last call, the class returns the last calculated wind speed. That means that you will never see changes faster than the specified sample time. This allows you to not wait for the wind speed, you can just grab the last valid reading.

SDL_MODE_DELAY

SDL_MODE_DELAY mode means to wait for the set sample time to expire and return the average wind speed at the expiration. You would use this if you want to make sure you have the latest value and your program architecture allows you to pause for the sample time before continuing. Which mode you use depends on the specific software architecture of your Arduino application. Typically, I use SDL_MODE_SAMPLE because I can tolerate not having a current value of wind speed. The example code for the SDL_Weather_80422 library is shown below:

R529.00  Inc VAT
Waterproof DS18B20 Digital temperature sensor + Resistor (2B3 Waterproof DS18B20 temp)

This is a pre-wired and waterproofed version of the DS18B20 sensor. Handy for when you need to measure something far away, or in wet conditions. While the sensor is good up to 125°C the cable is jacketed in PVC so we suggest keeping it under 100°C. Because they are digital, you don't get any signal degradation even over long distances! These 1-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. They work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0-5.0V systems.

The only downside is they use the Dallas 1-Wire protocol, which is somewhat complex, and requires a bunch of code to parse out the communication. If you want something really simple, and you have an analog input pin, the TMP36 is trivial to get going.

We toss in a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor.
 

Technical Details

Cable specs:

  • Stainless steel tube 6mm diameter by 30mm long
  • Cable is 36" long / 91cm, 4mm diameter
  • Contains DS18B20 temperature sensor
  • If your sensor has four wires - Red connects to 3-5V, Black connects to ground and White is data. The copper wire is soldered to the wire shielding
  • If your sensor has three wires - Red connects to 3-5V, Blue/Black connects to ground and Yellow/White is data

DS18B20 Technical specs:

  • Usable temperature range: -55 to 125°C (-67°F to +257°F)
  • 9 to 12 bit selectable resolution
  • Uses 1-Wire interface- requires only one digital pin for communication
  • Unique 64 bit ID burned into chip
  • Multiple sensors can share one pin
  • ±0.5°C Accuracy from -10°C to +85°C
  • Temperature-limit alarm system
  • Query time is less than 750ms
  • Usable with 3.0V to 5.5V power/data
R75.00  Inc VAT
BMP180 Digital Barometric Pressure Sensor Board Module (2B3 Barometric sensor)

Product information
This digital barometer has some interesting applications. By measuring the absolute pressure of the environment and converting this into altitude. you will have a reliable sensor for determining the height of your robot, plane or projectile. This sensor is capable of achieving an accuracy of 1m, with noise of only 17cm in ultra-high resolution. The device will operate at only 0.3uA meaning low current draw for battery powered applications.

Specifications
1.8V to 3.6V Supply Voltage
Low power consumption - 0.5uA at 1Hz
I2C interface
Max I2C Speed: 3.5 MHz
Very low noise - up to 0.02hPa (17cm)
Fully calibrated
Pressure Range: 300hPa to 1100hPa (+9000m to -500m)
Weight: 1.18g
Size: 21mm x 18mm

Package includes
1 x BMP180 Digital Barometric Pressure Sensor Board Module
1 x Male to Male 4 pin header

R49.00  Inc VAT
-55 to 125 Degree Red LED Digital Temperature Meter Sensor (temp display & probe)

  This item could be used in many harsh applications such as refrigerators, air-conditioners, aquariums and so on.
With DC7-30V power range, you could power it with 12V DC easily. When out of range, the meter will display E2.
This Thermometer can only display the temperature in ℃.

Specifications :

Power Supply Voltage : DC7-30V(with anti-reverse protection)
Measuring Temperature : -55℃ to 125℃
Units of Measurement : ℃
Display Color : Red
Display : Three 0.56 Inch LED digital tube
Refresh Rate : About 300mS/ times
Minimum Input : -55℃
Maximum Input : 125℃
Accuracy : About 0.2℃
Overload : Please do not attempt to measure higher than 150℃
Operating Temperature : -40℃-85℃
Sensor : DS18B20, stainless steel sheath package, waterproof, anti-corrosion, high temperatures
Size: Approx. 47mmx28mmx25mm
Length of Sensor : 1m
Probe Dimensions : Approx. 25 x 6 mm (LxD)

Package includes :

1 x -55 ~125 Degree LED Thermometer Meter with probe
R199.00  Inc VAT
Maplin Anemometer for windspeed (3A2 maplin anemometer)
Maplin Anemometer as used in the Raspberry Pi foundation weather station project to measure windspeed.
Hack this component to form part of your weather station.

View the project details here

And some more help here

Article specific to the anemometer only
R109.00  Inc VAT
Maplin Wind Direction Sensor (3A2 Maplin wind vane)
Maplin wind vane as used in the Raspberry Pi foundation weather station project to measure wind direction.
Hack this component to form part of your weather station.

View the project details here

And some more help here

Article specific to the wind vane only
R399.00  Inc VAT
Maplin Rain Gauge (3A2 Maplin Rain Gauge)
Maplin rain gauge as used in the Raspberry Pi foundation weather station project to measure rainfall.
Hack this component to form part of your weather station.

View the project details here

And some more help here

Article specific to the rain gauge only
R199.00  Inc VAT
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