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DHT11 Temperature and Relative Humidity Sensor Module (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

Out Of Stock
R45.00
Maplin Anemometer for windspeed (maplin anemometer 2A3)
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

Add to Cart
R179.00
Maplin Wind Direction Sensor (Maplin wind vane 2A3)
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
Add to Cart
R342.00
Maplin Rain Gauge (Maplin Rain Gauge 2A3)
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
Add to Cart
R228.00
Waterproof DS18B20 Digital temperature sensor + Extras (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
Out Of Stock
R95.00
AM2302 DHT22 Temperature And Humidity Sensor Module (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

Out Of Stock
R129.96
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