Sensors

Sensors
Sort By:  
R29.00  Inc VAT
R169.00  Inc VAT
R179.00
PIR Infrared Motion Sensor (HC-SR501) (2B3 pir sensor)

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
 
R29.00  Inc VAT
HC-SR04 Ultrasonic Sensor Distance Measuring Module (2b3 sensor ultrasonic blue)
- Model: HC-SR04
- Color: Blue + Silver
- Working voltage : 5V(DC)
- Static current: Less than 2mA.
- Output signal: Electric frequency signal, high level 5V, low level 0V.
- Sensor angle: Not more than 15 degrees.
- Detection distance: 2cm~450cm.
- High precision: Up to 3mm
- Mode of connection: VCC / trig(T) / echo(R) / GND
- Module Working Principle:
- Adopt IO trigger through supplying at least 10us sequence of high level signal
- The module automatically send eight 40khz square wave and automatically detect whether it receive the returning pulse signal

A good tutorial available at ModMyPi.
http://www.modmypi.com/blog/hc-sr04-ultrasonic-range-sensor-on-the-raspberry-pi

R35.00  Inc VAT
3-Pin Power Control Micro Switches(pack of 2 units) (1A5 micro switch)
Color Black + white + siliver
Material Plastic + copper + iron
Features Current: 0.1A; Voltage: DC 30V
Application Great for DIY projects and robotics. Use for collision detection in robotics
Packing List 2 x Micro switches

R10.00  Inc VAT
TCRT5000 Reflective Infrared Sensor Photoelectric Switches (1A5 infrared switch)
ColorBlack + blue
MaterialPlastic + iron
SpecificationDetecting range: 0.591" (15mm); Detecting method: Reflective; Collector Emitter Voltage: 70V; Collector Current: 100mA; Forward Current: 60mA; Output type: Phototransistor; Working temperature: -25~85'C
FeaturesCompact construction, sense the presence of an object by using the reflective IR beam from the object
ApplicationPerfect for line tracking robot car DIY project
Packing List1 unit
R25.00  Inc VAT
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
Pack of 2 Photoresistors 5K to10K Ohm Light Dependent Resistor (1A5 2xphoto 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

R5.99  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
Infrared Obstacle Avoidance Sensor (2B3 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.
R19.00  Inc VAT
8-Channel 3.3V to 5V Voltage Converter Module for Raspberry Pi - Blue (3A4 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
R89.00  Inc VAT
Sound Detection Sensor (2B3 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
R29.00  Inc VAT
Liquid Water level sensor Right Angle Float Switch (2A2 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

 

R75.00  Inc VAT
433Mhz RF Transmitter With Receiver Kit For Arduino MCU Wireless (2A3 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
R35.00  Inc VAT
PP Liquid Water Level Sensor Vertical Float Switch Down White (2A2 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
R59.00  Inc VAT
RC522 Chip IC Card Induction Module RFID Reader (RFID reader)

Description:

RC522 chip:
MF RC522 is applied to the highly integrated read and write 13.56MHz contactless communication card chip, NXP launched by the company for the "table" application of a low-voltage, low-cost, small size of the non-contact card chip to read and write, smart meters and portable handheld devices developed better choice. The MF RC522 use of advanced modulation and demodulation concept completely integrated in all types of 13.56MHz passive contactless communication methods and protocols. 14443A compatible transponder signals. The digital part of to handle the ISO14443A frames and error detection. In addition, support rapid CRYPTO1 encryption algorithm, terminology validation MIFARE products. MFRC522 support MIFARE series of high-speed non-contact communication, two-way data transmission rate up to 424kbit/s. As new members of the 13.56MHz reader card series of highly integrated chip family, MF RC522 MF RC500 MF RC530 There are a lot of similarities, but also have many of the characteristics and differences. Communication between it and the host SPI mode helps to reduce the connection narrow PCB board volume, reduce costs.

RFID module:
The MF522-AN module uses the the original Philips MFRC522 chip design circuit card reader, easy to use, low cost, and applies to the user equipment development, the reader and the development of advanced applications, the need for the user RF card terminal design/production. This module can be directly loaded into the various reader molds. Utilizes a voltage of 3.3V, through the SPI interface simple few lines directly with any user CPU motherboard connected communication can ensure that the module is stable and reliable work, distance card reader

Specifications:

Electrical parameters:
Operating current :13-26mA/DC 3.3V
Idle current :10-13mA/DC 3.3V
Sleep current: <80uA
Peak current: <30mA
Operating Frequency: 13.56MHz
Supported card types: mifare1 S50, mifare1 S70 MIFARE Ultralight, mifare Pro, MIFARE DESFire
Product physical characteristics: size: 40mm×60mm
Environmental Operating temperature: -20 to +80°C
Environmental Storage Temperature: -40 to +85°C
Relative humidity: relative humidity 5%-95%

Module interfaces SPI Parameter:
Data transfer rate: maximum 10Mbit/s

Package includes:

1 x RFID-RC522 module
1 x Standard S50 blank card (Non-contact IC card)
1 x S50 special-shaped card (key ring shape)
1 x Straight and 1 x angled male to male header(Soldering required)
R85.00  Inc VAT
NFC Smart Card Tag Tags S50 IC 13.56MHz Mifare IC Copier Read Write White Cards (2A2 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
R9.90  Inc VAT
13.56MHz RFID Proximity IC Token Tag Key Keyfobs For Access System (RFID tag 2A2)
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
R29.53  Inc VAT
AC 125V 1A Mini SPDT Micro Switch Hinge Roller(2 units) (1A5 micro switch roller(2))
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

R15.73  Inc VAT
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
R169.00  Inc VAT
R179.00
DC 5V Waterproof Ultrasonic Module Distance Measuring Transducer Sensor (2B3 waterproof ultrasonic)
Specifications:

Operating voltage: DC 5V
Total current work: 40mA
Acoustic emission frequency: 40khz
Maximumdistance: 4.5m
Blind: 25cm

Wiring:
+ 5V (positive power supply)
Trig (control side) RX
Echo (the receiver) TX
GND (negative)

Resolution: about 0.5cm
Angle: 70 degrees
Working temperature: -10 ~ 70 ℃
Storage temperature: -20 ~ 80 ℃

Product Features:

- small size, easy to use;
- low voltage, low power consumption;
- high accuracy;
- strong anti-jamming;
- integrated with wire enclosed waterproof probe, suitable for wet, harsh measuring conditions.

Application:

1 Horizontal distance;
2 obstacle avoidance, automatic control;
3 traffic control;
4 security, industrial control;
5 artificial intelligence, and research

Basic working principle:
(1) using IO port TRIG trigger location, to the high level signal of at least 10us;
(2) module automatically sends 8 40KHz pulse, automatic detecting whether a signal returns;
(3) on signal return, a high level is output through the IO port ECHO, the time duration of the high level is ultrasonic from launch to return. The test distance = (high level time * speed of sound (340M/S)) /2;

Package Includes:

1 x DC 5V Waterproof Ultrasonic Module Distance Measuring Transducer Sensor
R259.00  Inc VAT
SW-420 NC Type Vibration Switch Sensor Module (2B3 SW-420 vibration sensor)
Description:

If the module does not vibrate, the vibration switch circuit is closed - low output, the green indicator light is on.
On vibration the switch momentary disconnects, output is driven high, the green light goes off.
The module can be directly connected to a microcontroller, which will detect high or low levels, thereby detecting whether the module's environment is vibrating, can play a role in an alarm.

Features:

SW-420 normally closed type vibration sensor
Comparator output, clean signal, good waveform, strong driving ability, >15mA
Working voltage 3.3V ~ 5V
Output format: digital switching output (0 and 1)
Using a wide voltage LM393 comparator
Mounting holes for easy installation
Small PCB size: 3.2 x 1.4cm

Note:

Power direction cannot be reversed otherwise it is possible to burn the chip
Signal LED light is output Low, signal LED OFF output is High

Application:

Smart car, Earthquake alarm, Motorcycle Alarm, Theft alarm

Package includes:

1 x Vibration sensor module
R39.00  Inc VAT
Per Page      1 - 20 of 47