Sensors

Sensors
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Infrared Obstacle Avoidance Sensor (IR detecter 1 channel)
The sensor module light is adjustable to the environment, the working voltage is 3.3 V to 5 V.
It has a pair of infrared transmitting and receiving LEDs, when detecting obstacles (reflecting surface), receiving LED detects it.

After the comparator circuit processing, a green indicator will light up, at the same time the signal output interface will output a digital signal (a low level signal), can be adjusted to detection distance through the potentiometer, effective distance range 2 ~ 80 cm, easy to assemble and use. It can be widely used in robot obstacle avoidance, line following and so on in many projects.
Liquid Water level sensor Right Angle Float Switch (Sensor liquid level RA)

The liquid level switch detects the rising level of liquid in a sump or tank. It can be connected to a micro controller. It can then be used to start/stop a pump which then pumps liquid in/out until the level of the liquid has been restored to the point where the pump is switched off again. The switch may be used in a pump station, a sensor, a tank alarm, or other devices.

 

Specification:

Contact Rating: 10W

Switching Voltage: 220V

Switching Current: 0.5A

Breakdown Voltage: 220VDC

Carry Current: 1.0A

Contact Resistance: 100mohm

 

IR - Infrared Receiver (TSOP38238) (infrared receiver)

IR (Infrared) sensor tuned to 38KHz, perfect for receiving commands from a TV remote control. Runs at 3V to 5V so it's great for use on the Raspberry Pi!

To use, connect pin 3 (all the way to the right) to 5V power, pin 2 (middle) to ground and listen on pin 1. It doesn't do any decoding of the signal, just passes the 'raw data' along.

TSOP38238 Technical Features:

  • Carrier Frequency: 38kHz
  • Transmission Range: 45m
  • Directivity: 45°
  • Supply Voltage Min: 2.5V
  • Supply Voltage Max: 5.5V
  • Supply Current: 350µA
  • Opto Case Style: Through Hole
  • Operating Temperature Min: -25°C
  • Operating Temperature Max: 85°C
  • Packaging: Each
  • Operating Temperature Range: -25°C to +85°C
  • SVHC: No SVHC (16-Dec-2013)
  • Supply Voltage Range: 2.5V to 5.5V
  • Manufacturer: VISHAY MINICAST AGC2
PIR Infrared Motion Sensor (HC-SR501) (pir)

PIR sensors, often referred to as, "Passive Infrared" or "IR motion" sensors, enable you to sense motion. Everything emits a small amount of infrared radiation (IR), and the hotter something is, the more radiation it emits. PIR sensors are able to detect a change in average IR levels of their detection zone (e.g. when a human enters a room, that room will increase in temperature slightly) and hence sense motion. 

This one's great, as it can be powered  via the Raspberry Pi's 5V output, and be read directly from the Raspberry Pi's GPIO input (as the sensor has a digital 3.3V output!)

This PIR includes an adjustable delay before firing (approx 0.5 - 200 seconds), has adjustable sensitivity and two M2 mounting holes! It runs on 4.5V-20V power (or 3V by bypassing the regulator with a bit of soldering) and has a digital signal output  (3.3V) high, 0V low. Its sensing range is up to 7 meters in a 100 degree cone.
 
The HC-SR501 Infrared Motion Sensor Features:
  • Input Voltage: 4.5V - 20V
  • Current Draw: <50µA
  • Digital Output: 3.3V (High)
  • Digital Output: 0V (Low)
  • Working Temperature: -15°C to 70°C
  • Delay Time: 0.5 - 200 Seconds
  • Sensing Angle: 100° Cone
  • Range 5m - 7m
  • Dimensions
    • Sensor Lens Diameter: 23mm
    • Length: 24.03mm
    • Width: 32.34mm
    • Height (with lens): 24.66mm
    • Centre screw hole distance: 28mm
    • Screw hole diameter: 2mm (M2)
Tutorials
 
Soil Hygrometer Humidity Detection Moisture Sensor (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

Out Of Stock
R29.90
Pack of 2 Photoresistors 5K to10K Ohm Light Dependent Resistor (2 x photo resistors 5-10k)

Features:

Photosensitive resistance is the resistance of a semiconductor material, the conductivity change when light intensity varies.

Photoresistors are widely used in toys, lamps, cameras and other industries.

Specifications:

Model: GL5516
Maximum voltage: 150V, DC
Maximum wattage: 90mW
Operating temperature:  -30°C ~ 70°C
Spectral peak: 540nm
Bright resistance (10Lux) (KΩ): 5 - 10
Dark resistance: 0.5 MΩ
100λ10: 0.5
Response time: 20ms (Rise), 30ms (Down)
Resistance illumination: 2

Package includes:

2 x Photoresistors -  GL5516

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

8-Channel 3.3V to 5V Voltage Converter Module for Raspberry Pi - Blue (8 ch sensor convert)
Raspberry Pi and jumper cables are not included.

Highlights:

- Mutual conversion between 3V and 5V, It's convenient for PI connected to external 5V sensors or modules

- Supports total of 8 channels

- Range of voltage converted: 1.8V~6VDC

How to Use:
In the case of translating between 3.3V and 5V system:
VCCA connects to 3.3V power supply
VCCB connects to 5V power supply
GND connects to power negative pole respectively, the two power supply should be common-grounded with each other
When Ax has 3.3V input, Bx will get 5V output
When Bx has 5V input, Ax will get 3.3V output
NO direction control required
BMP180 Digital Barometric Pressure Sensor Board Module (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

Sound Detection Sensor (sensor sound detection)

Can be used for Acoustic control light; give sound and light alarm working with Photosensitive sensor
Note:The Maximum induction distance is 0.5M

Features
 
  • Main Chip: LM393, Electret condenser microphone
  • Working Voltage: DC 4-6V
  • Signal output indication
  • Single channel signal output
  • The output effective signal is low level
  • When there is sound,output low level and the signal lights
433Mhz RF Transmitter With Receiver Kit For Arduino MCU Wireless (tx rx board kit)
Description:

This is a 433Mhz RF transmitter with receiver kit for Arduino ARM MCU wireless
Application environment:
Remote control switch, receiver module, motorcycles, automobile anti-theft products, home security products, electric doors, shutter doors, windows, remote control socket, remote control LED, remote audio remote control electric doors, garage door remote control, remote control retractable doors, remote volume gate, pan doors, remote control door opener, door closing device control system, remote control curtains, alarm host, alarm, remote control motorcycle remote control electric cars, remote control MP3.


Specifications:

Receiver module:
Product Model: XD-RF-5V
Operating voltage: DC5V
Quiescent Current: 4MA
Receiving frequency: 433.92MHZ
Receiver sensitivity: -105DB
Size:30x14x7mm

Transmitter:
Product Model: XD-FST
Launch distance :20-200 meters (different voltage, different results)
Operating voltage :3.5-12V
Dimensions: 19 * 19mm
Operating mode: AM
Transfer rate: 4KB / S
Transmitting power: 10mW
Transmitting frequency: 433M
Pinout from left → right: (DATA; VCC; GND)

Package includes:

 1 x Receiver module
 1 x Transmitter
Hall Water Flow Sensor Flowmeter Water Control 2MPa (flow sensor)
Description:

This product is mainly used for water metering
High amplitude ≥ 4.6V
Low amplitude ≤ 0.5V
Electric strength 1250V/min
Insulation resistance ≥ 100MΩ
Hydrostatic pressure testing ≤ 2.0Mpa

Specification:

The lowest rated working voltage: DC4.5 5V-24V
Maximum operating current: 15 mA (DC 5V)
Working voltage range: DC 5~18 v
Load capacity: ≤ 10 mA (DC 5V)
Use temperature: ≤ 80°C
Operating humidity range: 35%~90%RH (no frost)
Allowing pressure: pressure 2.0Mpa
Temperature: -25~+80 °C
External threads: 1/2"
Outer diameter: 20mm
Intake diameter: 9mm
Outlet diameter: 12mm

Application:

Water heaters, water vending machines, flow measurement

Package included:

1x Water flow sensor
PP Liquid Water Level Sensor Horizontal Float Switch Down White (straight float level)

A compact vertically mounted float switch which can be mounted at either the top or bottom of a tank (by the supplied 'O' ring and nut) to either rise or fall for activation (internal magnet) of a sealed reed relay.
The sensor is supplied pre-wired with flying output leads.
Float switch is a used to sense the level of liquid within a tank, used to activate a pump, an indicator, an alarm, or other device.

Description :

Use them with hydroponics, saltwater tanks, freshwater tanks, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating, or what ever your project may be
Contains no mercury
Down float switch

Specifications :

Cable Length: 36cm
Maximum Load: 50 W
Max Switching Voltage: 100V DC
Minimum Voltage: 250V DC
Maximum Switching Current: 0.5 A
Max Load Current: 1.0 A
Max Contact Resistance: 0.4 Ω
Temp Rating: -20~+80℃
Net Weight: 12g
Material: PP

Package includes :

1 x Liquid Float Switch
NFC Smart Card Tag Tags S50 IC 13.56MHz Mifare IC Copier Read Write White Cards (RFID card)

Features :
 
Storage Capacity : 8Kbit,16 partitions, each partition group password
Operating Frequency : 13.56MHZ
Communication Speed : 106Kboud
Reading Distance : 2.5-10CM
Read/Write Time : 1-2MS
Operating Temperature : -20 ℃ to 85 deg c
Number of Erase/Write : > 100,000 times
Saving Data : > 10
Color : White
Material : PVC
Size : Approx. 8.5 x 5.4 x 0.1cm/ 3 x 2 x 0.04"
Application Scope : Access control, Water meters prepaid, campus cards, bus cards, highway tolls, parking lots, community management etc
 
Plackage Includes :
 
1 x NFC Smart Card
13.56MHz RFID Proximity IC Token Tag Key Keyfobs For Access System (RFID tag)
Features :

Small and durable
Waterproof, shockproof, anti-corrosive.
Keyring for easy carrying.

Specifications :


Main Chip : Fudan F08 compatible S50
Colour : Blue,Yellow, Black, Grey, Brown...Please contact us for availability
Size : Approx. 40.5×32×4.2mm
Operating Frequency : 13.56 MHz
Communication speed : 106K Boud
Read and write distance : 2.5 ~ 10cm
Read and write time : 1 ~ 2ms
Operating Temperature : -20 ℃ ~ 85 ℃
Endurance :> 100,000 times
Storage capacity : 8Kbit, 16 partitions, each partition with 2 group passwords

Typical applications :
Enterprise / campus access cards, parking, district management,attendance systems, patrol systems, enterprise systems, access control systems, radio frequency identification field etc.


Package includes :

1 x 13.56MHz RFID Keyfob
AC 125V 1A Mini SPDT Micro Switch Long Hinge Roller (micro switch roller)
Description:

Poles:SPDT
Action Type:Momentary
Contact Type:1NO + 1NC
Material:Plastic, Metal
Rated Load:AC 1A 125V
Lever Size (Approx.):13 x 4mm/0.5" x 0.2"(L*W)
Pin Width:1mm/0.03"
Size: (Approx.)13 x 6 x 13mm/ 0.5" x 0.2" x 0.5"(L*W*T )

Package includes:

  2x AC 125V 1A Mini SPDT Micro Switches

GPIO Breakout Kit (GPIO breakout kit)
We created this bundled breakout kit for easy connection from your Raspberry Pi GPIO to the breadboard.
The bundle is discounted to save you some hard earned cash rather than paying full price for loose components.

Package includes:

1 x BreadBoard 400 tie points
1 x 40-Pin Gray Ribbon Cable (29cm)
1 x GPIO T Board for easy breadboard connection
Add to Cart
R169.00
R223.99
Maplin Anemometer for windspeed (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

Maplin Wind Direction Sensor (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
Maplin Rain Gauge (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
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