Sensors

Sensors
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8 channels bidirectional voltage translation between different logic level, translate between Ax and Bx automatically.
R34.90  Inc VAT
WS Pioneer600 Raspberry Pi Expansion Board (WS Pioneer 600 board)

Note : the Pi, cables and sensors are NOT included.

Pioneer600 Features

  • Supports Raspberry Pi A+/B+/2B/3B/3B+
  • <Standard I/O> dual LED, joystick, buzzer, the basic components
  • <USB TO UART> CP2102, control the Pi through serial terminal
  • <Display> 0.96inch OLED, big world in the little screen
  • <RTC> DS3231, high precision, backup battery holder is also available
  • <AD/DA> PCF8591, 8-bit resolution, screw terminal IO interface
  • <GPIO Expansion> PCF8574, more GPIO, more possibility
  • <IR Control> LFN0038K, Raspberry Pi remote control comes true
  • <Pressure Sensor> BMP280, measuring air pressure and temperature
  • <1-WIRE> for connecting 1-WIRE devices, DS18B20 is included
  • <Sensor Interface> for connecting various sensors

What's on the Pioneer600

  1. Raspberry Pi GPIO interface : for connecting Raspberry Pi
  2. USB TO UART : control the Pi through serial terminal
  3. AD/DA IO interface : screw terminal
  4. 1-WIRE interface : for connecting 1-WIRE devices like DS18B20
  5. Sensor interface : for connecting various sensors
  6. 0.96inch OLED : SSD1306 driver, 128×64 resolution, SPI interface
  7. Buzzer
  8. CP2102 : USB TO UART converter
  9. PCF8591 : 8-bit AD/DA converter, I2C interface
  10. BMP280 : pressure sensor, I2C interface
  11. PCF8574 : I/O expansion chip, I2C interface
  12. DS3231 : high precision RTC chip, I2C interface
  13. Power indicator
  14. User LED
  15. Joystick
  16. LFN0038K IR receiver

Examples

PeripheralInterfacePythonWiringPiBCM2835 C LibrarySysFs
LEDI/O
KEYI/O 
IRMI/O 
UARTUART  
DS18B20ONE-WIRE  
PCF8574I2C
PCF8591I2C 
DS3231I2C 
BMP280I2C 
OLEDSPI 

Development Resources

  • User manual
  • Schematic
  • Demo codes : python and C (WringPi/BCM2835 C Library/SysFs)
  • Raspberry Pi tutorials
  • Raspbian (configured system image)

Wiki : www.waveshare.com/wiki/Pioneer600

R339.90  Inc VAT
WS Logic Level Converter green 8 channel (3A2 WS logic level convert green)

Features

  • 8 channels bidirectional voltage translation between different logic level, translate between Ax and Bx automatically
  • 4 pairs of power supply interfaces, supports more situations
  • Use tantalum capacitors for power filter, provides more stability
  • Voltage level: 1.8V-6V
  • Dimension: 31.6mm x 25.4mm

How to Use

In the case of translating between 3.3V and 5V system:

  • VCCA/VA connects to 3.3V power supply
  • VCCB/VB 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 TTL 3.3V input, Bx will get TTL 5V output
  • When Bx has TTL 5V input, Ax will get TTL 3.3V output
  • NO direction control required

Development Resources

Wiki : www.waveshare.com/wiki/Logic_Level_Converter

8 channels bidirectional voltage translation between different logic level, translate between Ax and Bx automatically.
R34.90  Inc VAT
HX711 Module 20kg Aluminum Alloy Scale Weighing Sensor Load Cell (2B5 20kg scale sensor)
Comprehensive error: 0.05% F.S
Rated output temperature drift: ≤ 0.15% F.S / 10 ℃
Output Sensitivity: 1.0 ± 0.1 mV / V
Zero drift: 0.05% F.S (1 minute)
Zero point temperature drift: 0.2% F.S / 10 ° C
Zero output: ± 0.1 mV / V
Input impedance: 1000 ± 50Ω
Output impedance: 1000 ± 50Ω
Overload capacity: 150% F.S
Recommended excitation voltage: 5-10V
Operating temperature range: -10 ~ +50 ℃
Application: for high-precision small-scale weighing for micro-automatic testing equipment, micro-weighing equipment, pushing and pulling equipment, pull pressure test
Red: E +
Black: E-
White: A-
Green: A +


Package includes:

1 x Weighing Sensor Load Cell
1 x HX711 Module
R132.90  Inc VAT
3m K Type 0~600 Degree Thermocouple 100mm Probe Sensor (2B5 3m K Type temp probe)
Specifications : 

Operating Temperature : 0 - 600℃
Probe Material : Stainless Steel
Probe Diameter : 5mm /0.196inch
Threads Size : 3/8" NPT
Probe Length : 100mm / 3.937inch
Cable Length : 3m
Cable External Shielding : Stainless Steel Braiding
Cable Internal Insulation : Fiberglass
Connector : Spade Type

Package includes :

1 x K Type Thermocouple
R109.90  Inc VAT
MAX31855 MAX6675 SPI K Thermocouple Temperature Sensor Module Board (2B5 K Thermocouple Temp board)
Features:
 
1. Thermocouples are very sensitive, requiring a good amplifier with a cold compensation reference.
2. This product does everything for you and can be easily interfaced with any microcontroller even one without an analog input.
3. This breakout board hosts the chip itself, a 3.3V regulator with 10uF bypass capacitors and level shifting circuitry.
4. Comes with a 2 pin terminal block (for connecting to the thermocouple) and pin header.
 
Description:
 
1. Measurement temperature range: -200°C to +1350°C
2. SPI interfaces, high-speed transmission
3. The input voltage is 3-5V DC
4. Direct digital output temperature value, no amplifiers, no ADC
5. 14-bit resolution, 0.25 degree temperature accuracy
 
Note:
 
1. Works with any K type thermocouple
2. K thermocouples have about ±2°C to ±6°C accuracy
3. Internal temperature reading
4. 3 to 5v power supply and logic level compliant
5. SPI data output requires any 3 digital I/O pins
 
Packing includes:
 
1 x Thermocouple Breakout Board
R99.90  Inc VAT
MLX90614ESF AAA Non Contact Human Body Infrared IR Temperature Sensor (Infra red temp sensor)
The MLX90615 is an Infra Red thermometer for non contact temperature measurements. Both the IR sensitive
thermopile detector chip and the signal conditioning chip are integrated in the same TO-46 can package.
Thanks to its low noise amplifier, 16-bit ADC and powerful DSP unit, a high accuracy and resolution of the
thermometer is achieved. The thermometer is factory calibrated with the digital SMBus compatible

Features
  1.  Small size, low cost
  2.  Easy to integrate
  3.  Factory calibrated in wide temperature range: -40…85°C for sensor temperature and -40…115°C for object temperature
  4.  High accuracy of 0.5°C over wide temperature range (0...+50°C for both TA and TO )
  5.  High (medical) accuracy calibration
  6.  Measurement resolution of 0.02°C
  7.  SMBus compatible digital interface
  8.  Power saving mode
  9.  Customizable PWM output for continuous reading
  10.  Embedded emissivity compensation
  11.  3V supply voltage

Datasheets available at https://github.com/arduinolearning/Datasheets/blob/master/MLX90614.pdf
R249.90  Inc VAT
Zinc Alloy Alarm Garage Window/Rolling Door Reed Switch (2B1 Garage reed switch)
Features: 
 
1. High quality
2. Simple installation
3. The metals electroplates outer shell, double-loop circuit design, performance stable.
4. Circuit is open when magnet is near the switch.
5. Special use for metal doors, anti-magnetic interference design.
 
Specifications:
 
Housing material: Zinc Alloy
Rated Voltage: 100V
Operating Distance: 50-70mm
Contact Type: Normally Closed
Size: 10.6 x 3.8 x 1cm/ 4.2" x 0.15" x 0.4" (L x W x T)
Cord Length: approx.45cm/ 17.7"
 
Package includes: 
 
1 x Door Magnetic Switch Alarm
4 x Screws
R169.90  Inc VAT
3.3-5V 3-Wire Vibration Sensor Module (3 wire vibration sensor)
Features:
 
Comparative output, clean signal, good waveform, strong driving ability, more than 15mA.
Working voltage: 3.3V to 5V
Output form: digital switch output (0 and 1)
Equipped with fixed screw hole, easy to install
PCB board size: 32mm x 14mm
Uses the LM393 wide voltage comparator

When the VCC and GND are connected, the power indicator will light up.

Put the module on the desktop, adjust the blue potentiometer on the board until the on-board switch indicator lights up, and then slightly turn back the potentiometer untill the indicator light turns off. Hit the desktop with your hand so the vibration shocks the sensor, the indicator light will go on. Vibration stops, indicator light will turn off.


Module connection details:
 
1. VCC: connect power positive
2. GND: connect power negative
3. DO: digital signal output
 
Application:
 
It is used for all kinds of vibration triggering, theft alarm, intelligent car, electronic building block.....
Please note that the trigger time is short when small vibration is induced, not enough to drive the relay.
 
Package includes:
 
1 x Vibration sensor module
R11.90  Inc VAT
HX711 24bit AD Module + 1kg Aluminum Alloy Scale Weighing Sensor Load Cell Kit (1kg scale load cell)
Features:

Size: 33mm x20mm / 1.29 "x0.78"
Range: 1kg
Operating temperature: -20℃ ~ +85
Ambient Humidity: 10% -80RH
Voltage range: 2.6 ~ 5.5V

Weight: 32g

Package includes:

1 x Weighing Sensor
1 x HX711 Module
R124.90  Inc VAT
WS Barcode Scanner Module, 1D/2D Codes Reader (3B4 barcode scanner)

Overview

This is a small 1D/2D codes reader, by using the intelligent image recognition algorithm, it will decode the barcode or 2D code on paper or screen, fast and accurately.

Through the onboard USB and UART interface, it can be directly plugged into a computer, or be easily integrated to kinds of devices due to its small form factor.

Features

  • Easy to use, requires no knowledges of image recognition
  • Decodes various common 1D/2D codes such as Barcode, QR code etc.
  • Onboard micro USB and UART serial port, allows to connect with computers or embedded devices
  • Configurable via scanning 'configuration code'
  • Onboard light source, works in the dark

Specifications

  • Operating voltage: 5V
  • Operating current: 135mA (scanning), 58mA (standby), 2mA (sleep)
  • Operating temperature: 0°C~60°C
  • Operating humidity: 5%~95% (Non-condensing)
  • Communication interface: UART, USB
  • Decodes 1D codes: Codebar, Code 11, Code 39/Code 93, UPC/EAN, Code 128/EAN128, Interleaved 2 of 5, Matrix 2 of 5, MSI Code, Industrial 2 of 5, GS1 Databar(RSS)
  • Decodes 2D codes: QR code, Data Matrix, PDF417
  • Light source: white
  • Scan angels: roll 360°, skew ±65°, pitch ±60°
  • Field of view: 28° (horizontal), 21.5° (vertical)
  • Dimension: 53.3mm x 21.4mm

Development Resources

Wiki : www.waveshare.com/wiki/Barcode_Scanner_Module

R599.90  Inc VAT
125KHz Serial UART RF ID Card Reader (2A6 125KHz Serial card reader)
This is a radio frequency ID card reader module that can read the ID card's serial numbers. It can help to design intelligent access control systems. When the module sensed ID card, it will convert the card number into a 9-digit hexadecimal number, each digit of which will be converted into ASCII code. Then it adds a starting byte and 5 other bytes, so a total of 15 bytes output to the serial port. You can convert it into a decimal number that is the serial number engraved on the ID card.

Features:
- Support Card Type: Read-only ID cards (such as EM4100, EM4001, etc.)
- Working voltage: 4.5~5.5VDC
- Working current: 40mA (max)
- Working frequency: 125KHz
- Reading distance: 2~5cm
- Logic Interface: UART TTL serial port
- Communication format: 8N1
- Baud rate: 9600
- Induction coil: pluggable
- Coil size: 35X40mm
- Coil lead length: 15cm
- Great for DIY
- Applications: Access control systems, Attendance system
R84.90  Inc VAT
CJMCU-280E BME280 High Precision Atmospheric Pressure Sensor (2B4 CJMCU-280E BME280 pressure)
Features:

Relative humidity range: 0 ~ 100%
The temperature range: -40°C ~ +85°C
Humidity measurement response time: 1S
Hysteresis: 2% relative humidity
Pressure range: 300 ~ 1100 hPa
Absolute pressure accuracy: absolute ± 1hPa (after soldering)
Absolute temperature accuracy: ±0.5°C (at 25°C)

Communication interface: I2C, SPI

Package includes:

1 x Sensor
R145.90  Inc VAT
30A-1V Split-Core SCT013 AC Current Sensor (3A6 30A split core current sensor)
This is split-core current transformer is an AC current sensor. It is used for current measurement, monitor and protection for AC motors, lighting equipment, air compressors, home automation etc.
Features:
- Opening size: 13x13mm
- Rated input current (RMS): 10% - 120% of that is 3A - 36A
- Output voltage(RMS): linear output. When the input current is 30A, the output voltage is 1V
- Linearity: ± 3%
- Output connectors: 3.5mm standard three-pin plug
- Lead length: 1 m

This sensor is perfect for use with our Raspberry Pi RPICT3T1 current and temperature sensor board.
R159.90  Inc VAT
10A-1V Split-Core SCT013 AC Current Sensor (3A6 10A split core current sensor)
This is asplit-core current transformer which is used as an AC current sensor. It is popularly used for current measurement, monitoring and protection for AC motors, lighting equipment, air compressors, home automation etc.
Features:
- Opening size: 13 x 13mm
- Rated input current (RMS): 10% - 120% of that is 1A~12A
- Output voltage(RMS): linear output. when the input current is 10A, the output voltage is 1V
- Linearity: ± 3%
- Output connectors: 3.5mm standard three-pin plug
- Lead length: 1m
R159.90  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
R9.99  Inc VAT
4 Channel Infrared Line Tracking Sensor Module (AW 2B4 4 Channel Infrared Line kit)
Features:

Smart car or a robot line following (including black and white lines).
Smart car to avoid obstacle and cliff, anti-drop.
Can be applied to other automation applications.

Specifications:

Working voltage: DC 3.3V-5V
Working current: try to use more than 1A power supply
Working temperature: -10°C to +50°C
Mounting: M3 screw holes
Detection range: 1mm to 60cm adjustable, the closer the performance more stable, white reflects the farthest distance.
Output interface: 6 wire interface (1234 to 4 signal output ends, + positive power, - for the negative power is ground)
The output signal: TTL level (can be directly connected to I/0 microcontroller, infrared light reflected back to the sensor induction, red indicator light, output low level; no infrared light, the indicator light does not shine, the output is high.)

Package includes:

1 x Tracking Module (Board + 4 sensors)
1 x Female to Female Dupont jumpers
R59.90  Inc VAT
9Pcs MQ2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 Sensor Module kit (C1gas sensor kit)
Features:

MQ-2:
Detection concentration: 300-1000ppm(combustible gas).

MQ-3:
Used in motor vehicles and other no drunken drivers homework personnel on-site testing, also used in other places of ethanol vapor detection.

Feature:
Size: 32 x 22 x 27mm
Main chip: LM393, ZYMQ - 3 gas sensors
Working voltage: DC 5V
1, With a signal output instructions.
2, Two-way signal output (TTL level output and analog output)
3, TTL output signal for low level effectively.(when the low output electric signal lights at ordinary times, can be directly by single chip microcomputer)
4, Analog 0 - 5V voltage, the higher the concentration, the higher the voltage.
5, To ethanol steam has a high sensitivity and good selectivity.
6, In June and has long service life and reliable stability.
7, Rapid response recovery features.


MQ-4:

1, Using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2, With a DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module)
4, The analog output voltage, the higher the concentration the higher the voltage.
5, Methane, natural gas has better detection sensitivity.
6, There are four screw holes for easy positioning;
7, Product Dimensions: 32 (L) * 20 (W) * 22 (H)
8, With a long service life and reliable stability
9, Rapid response and recovery characteristics
 
Electrical properties:
Input voltage: DC5V power (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output :0.1-0 .3 V (relatively clean), the highest concentration of voltage around 4V

MQ-5:

Suitable for home or industrial on LPG, natural gas, coal gas monitoring devices. Excellent resistance to alcohol, smoke interference.

Module Features:
1, Using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2, With a DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module)
4, The analog output voltage, the higher the concentration the higher the voltage.
5, For gas, natural gas has better detection sensitivity.
6, There are four screw holes for easy positioning;
7, Product Dimensions: 32* 20 * 22
8, With a long service life and reliable stability
9, Rapid response and recovery characteristics
 
Electrical properties:
Input voltage: DC5V power (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output :0.1-0 .3 V (relatively clean), the highest concentration of voltage around 4V

MQ-6:

Suitable for domestic or industrial on LPG (liquefied petroleum gas), butane, propane, LNG (liquefied natural gas) detection devices. Excellent resistance to ethanol vapor, smoke interference.

Module Features:
1, Using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2, With a DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module)
4, 0 ~ 5V analog output voltage, the higher the concentration the higher the voltage.
5, The propane, butane, LPG, LNG has a good detection sensitivity.
6, There are four screw holes for easy positioning;
7, Product Dimensions: 32 (L) * 20 (W) * 22 (H)
8, With a long service life and reliable stability
9, Rapid response and recovery characteristics
 
Electrical properties:
Input voltage: DC5V power (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output :0.1-0 .3 V (relatively clean), the highest concentration of voltage around 4V

MQ-7:

For home, carbon monoxide detection device environment. Suitable for carbon monoxide and gas detection.

Module Features:
Detection of concentration: 10-1000ppmCO
Loop voltage Vc: <=10V DC
Heater voltage Vh: 5.0V ±0.2V  ACorDC(high)
Load resistance: adjustable.
Heater  resistance RH: 31ohm ± 3 ohm(room temperature)
Heater power consumption PH: <=350mW

Standard test conditions:
Temperature: 20 degree ± 2 degree
Humidity: 65% ± 5% RH
Standard test circuit: Vc: 5.0V ± 0.1V; Vh(high):5.0V±0.1V
                                   Vh(low):1.5V±0.1V

1, The analog output voltage, the higher the concentration the higher the voltage.
2, The carbon monoxide detection with better sensitivity.
3, There are four screw holes for easy positioning;
4, Product Dimensions: 32 (L) * 20 (W) * 22 (H)
5, With a long service life and reliable stability
6, Rapid response and recovery characteristics
 
Electrical properties:
Input voltage: DC5V power (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output :0.1-0 .3 V (relatively clean), the highest concentration of voltage around 4V

MQ-8:

Suitable for domestic or industrial hydrogen leak on a monitoring device. Are not subject to ethanol vapor, soot, carbon monoxide and other gases interference.

MQ-9:

For home or factory gas leak detection device, suitable for carbon monoxide, combustible gas monitoring device.

Can test carbon monoxide: 10 to 1000ppm CO
Combustible gas range: 100 to 10000ppm

Module Features:
Loop voltage Vc: <=10V DC
Heater voltage Vh: 5.0V ±0.2V  ACorDC
Heater resistance: 31 ohm ± 3 ohm(room temperature).
Heater power consumption PH: <=900mW
Standard test conditions:
Temperature: 20 degree ± 2 degree
Humidity: 65% ± 5% RH
Standard test circuit: Vc: 5.0V ± 0.1V
                                   Vh:5.0V±0.1V
Warm up time: more than 48 hours.

MQ-135:

MQ135 gas sensor is sensitive material used in clean air, low conductivity tin dioxide (SnO2). When the sensor is kept in their environment
The contaminated gas, the conductivity of the sensor with the air pollution gas concentration increases. Using a simple circuit can be changes in the conductivity
Of the concentration of the gas is converted to the corresponding output signal.
MQ135 sensor for ammonia, sulfide, benzene vapor high sensitivity, smoke and other harmful monitor is also very satisfactory. This sensor can detect a
Measuring a variety of harmful gases, is a low-cost sensors for a variety of applications.

Module Applications:
For home, environmental harmful gas detection device, suitable for ammonia, aromatic compounds, sulfur, benzene vapor, smoke and other gases harmful gas detection, gas sensors tested concentration range: 10 to 1000ppm.

Module Features:
Loop voltage Vc: <=24V DC
Heater voltage Vh: 5.0V ±0.2V  ACorDC
Load resistance: Adjustable
Heater resistance: 31 ohm ± 3 ohm(room temperature).
Heater power consumption PH: <=900mW
Sensitive body surface resistance Rs:2K ohm - 20K ohm(in 100ppm NH3)
sensitivity S: Rs(in air)/ Rs(100ppmNH3)>=5
Standard test conditions:
Temperature: 20 degree ± 2 degree
Humidity: 65% ± 5% RH
Standard test circuit: Vc: 5.0V ± 0.1V
                                      Vh:5.0V±0.1V
Warm up time: More than 48 hours.

Package includes:

1 x MQ2
1 x MQ-3
1 x MQ-4
1 x MQ-5
1 x MQ-6
1 x MQ-7
1 x MQ-8
1 x MQ-9
1 x MQ-135
1 x 20pcs 20cm male to female jumper cable
1 x 20pcs 20cm female to female jumper cable
R362.15  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
R75.66  Inc VAT
Soil Hygrometer Humidity Detection Moisture Sensor (2B4 moisture probe hygrometer)

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

R30.16  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

R59.90  Inc VAT
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