Sensors

Sensors
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IR - Infrared Receiver (TSOP38238) (2B3 TSOP 38238 infrared receiver)

Description:

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.

Specifications:

  • 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

Contents:

  • 1x Infrared Receiver

Resources:


R19.17  Inc VAT
Mini Joystick Module (Mini Joystick Module 4B2)
Description:

This is PSgame joystick module.
Lots of control projects need joysticks. This module provides an affordable solution to that. Simply connect to two analog inputs, the robot is at your commands with X,Y control. It also has a switch that is connected to a digital pin. This joystick module can be easily connect to a micro controller via normal GPIO with jumper cables.
No soldering required, Reusable for prototyping or design applications of electronic circuits, modify or revise the circuits easily.
Accept resistors,transistors, diodes, LEDS, capacitors and other types of electronic components.
An invaluable tool for experimenting with circuit designs.
Directional movements are simply two potentiometers - one for each axis
Compatible with Arduino interface
Brand: KEYES
Model: KY-023

Specifications:

Three axis (X,Y,Z and button)
Size:37x25x32mm
Weight: 15 g
Tie-point 700
ABS plastic material
Completely reusable
Phosphor bronze nickel plated spring clips
Accepts a variety of wire sizes(29-20 AWG)

Package includes:

1 x PS2 joystick module

Getting started
R24.90  Inc VAT
PIR Infrared Motion Sensor (HC-SR501) (2B3 pir sensor big)

Description:

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.

Specifications:

  • 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)

Contents:

  • 1x HC-SR501 Motion Sensor

Resources:

R26.90  Inc VAT
Waterproof DS18B20 Digital temperature sensor + Resistor (2B3 Waterproof DS18B20 temp)

Description:

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.

Specifications:

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

Contents:

  • 1 x DS18B20 Digital temperature sensor
  • 1 x 4.7k resistor

Resources:

 

R39.90  Inc VAT
5518 Pack of 2 Photoresistors 5K to10K Ohm Light Dependent Resistor (C8 LDR 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

Read the Docs

R5.90  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

How to setup a DHT11 with your Raspberry Pi

R39.90  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.

Getting started
R9.90  Inc VAT
8-Channel 3.3V to 5V Voltage Converter Module for Raspberry Pi - Blue (2B4 8ch blue convert sensor)
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
R39.90  Inc VAT
37-in-1 Sensor Module Kit (C22 37-in-1 sensor kit)

Use this kit as inputs for sensing and outputs for reporting in your projects.

We found a nice tutorial that covers most of the sensors here

Packing List

1 x XY JoyStick
1 x Relay
1 x Big Sound
1 x Small Microphone
1 x Tracking
1 x Avoid
1 x Flame
1 x Linear Hall
1 x Touch
1 x Digital Temperature
1 x Buzzer
1 x Passive Buzzer
1 x RGB LED
1 x SMD RGB
1 x 2-Color LED
1 x 2-Color
1 x Reed Switch
1 x Mini Reed
1 x Heartbeat
1 x 7 Color Flash
1 x Laser
1 x Button
1 x Shock
1 x Rotary Encoders
2 x Magic Cup
1 x Tilt Switch
1 x Ball Switch
1 x Photo resistor
1 x Temp and Humidity
1 x Analog Hall
1 x Hall Magnetic
1 x TEMP
1 x Analog Temp
1 x IR Emission
1 x IR Receiver
1 x Tap module
1 x Light Blocking

We found this article explaining what the sensors are used for: http://www.instructables.com/id/Arduino-37-in-1-Sensors-Kit-Explained/?ALLSTEPS
Use this kit as inputs for sensing and outputs for reporting in your projects.
R299.90  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

Using the BMP180 with Raspberry Pi

R49.90  Inc VAT
Sound Detection Sensor LM393 Chip (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
Find help with this sensor at https://www.instructables.com/id/Sound-Sensor-Raspberry-Pi/
R34.90  Inc VAT
Liquid Water level sensor Side Mounted Float Switch (2A2 liquid level side mounted)

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


Resources:

Python library
Introduction to Buttons and Switches
Types of buttons and switches

 

R29.90  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 :

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


Resources:

Python library
Introduction to Buttons and Switches
Types of buttons and switches

R28.90  Inc VAT
MS Weather Station Anemometer for windspeed (1B6 MS anemometer)
MS 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
R399.90  Inc VAT
MS Weather Station Wind Direction Sensor (1B6 MS wind vane)
MS 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
R399.90  Inc VAT
MS Weather Station Rain Gauge (1B6 MS Rain Gauge)
MS 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
R259.90  Inc VAT
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;

Usage

Package Includes:

1 x DC 5V Waterproof Ultrasonic Module Distance Measuring Transducer Sensor
R229.90  Inc VAT
5V Infrared Line Tracking Sensor Module (2B3 line track sensor)
Features:

Size: 3.5 x 1cm
Power supply: 5V DC
Detector distance: 10mm
Build-in Tcrt5000 Sensor NSOR
Applicable to a variety of platforms including Arduino / AVR / ARM /PIC

Package includes:

1 x Tracking Sensor Module

Build A Line-following robot
R29.26  Inc VAT
Recessed Door Window Contacts Reed Security Alarm Switch with Screws (2B6 reed switch recessed)
There are two types of reed switches : "normally open" reed switches and "normally closed" reed switches.
The metal reeds on a normally open switch stay open when there is no magnet near the switch.
In the presence of a magnetic field, the contacts of a normally-open reed switch will close.
A normally-closed reed switch is closed when it is not near a magnet; as a magnet is brought close to it, a normally-closed switch will open.

These are the normally open type

Specifications :

Color : white
Material : ABS
Dimensions : 27(mm) X 14(mm) X 8(mm)
Switch pattern : N/O normally open, alarm-on-broken line
Contact capacity : Maximum switch current : 0.5Amp
Voltage : Max 200 VDC
Rated power : 10W
Actuation distance : 20-25mm
Wire lead : 22 Awg, About 350mm long
Mounting method : SMD (by screws or double-sided tape)
Recommendations in application : alarms and electronic projects

Package Includes :                                                                                                                                                                                                    

1 x Reed switch set
Necessary screws for installation
R44.90  Inc VAT
SparkFun Logic Level Converter Bi-Directional (3A4 Sparkfun logic level converter )

If you’ve ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. The SparkFun bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time.

This level converter also works with 2.8V and 1.8V devices. What really separates this Logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel. Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side.

The level converter is very easy to use. The board needs to be powered from the two voltages sources (high voltage and low voltage) that your system is using. High voltage (5V for example) to the ‘HV’ pin, low voltage (3.3V for example) to ‘LV’, and ground from the system to the ‘GND’ pin.

Dimensions: 0.63 x 0.52" (16.05 x 13.33mm)

Documents:

R57.90  Inc VAT
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