Sensors & Module

R20DC 125KHz and 13.56MHz 2-in-1 USB Proximity Sensor Smart RFID ID IC Card Reader reading distance up to 8cm, which is widely used for RFID radio frequency identification systems and projects, such as automated parking management, personal identification and production access control.

This RFID card reader can read RFID card serial numbers and output them to your computer according to the specified format, then management software derives many more functions.

Installation Steps :

• Connect with a computer through the USB cable inside
• Open notepad or a word document
• Put the card on the top of the reader
• The document will output card number automatically

Note: No RFID card or Tag are included in the package you have to buy it separately

• USB Plug and Play.
• Operating Frequency: 125KHz and 13.56MHz (2-in-1)
• RFID reader 0-8cm Reading Distance.
• Win8/7/XP/Android Supported.
• S50/S70 Card Supported.
• OTG Phone Connection.
• Built-in buzzer and LED for identification.
• Widely used at apartment, office, supermarket and other places.
• Supporting System: Windows87XP982000 CEMENT, LINUX, Vista

• 1 x R20DC 125KHz and 13.56MHz 2-in-1 Card Reader
• 1 x USB Cable

This RC522 RFID Card Reader Module 13.56MHz is a low-cost MFRC522 based RFID Reader Module is easy to use and can be used in a wide range of applications.

The MFRC522 is a highly integrated reader/writer IC for contactless communication at 13.56 MHz.

RC522 is the highly integrated RFID card reader which works on non-contact 13.56mhz communication, is designed by NXP as low power consumption, low cost and compact size read and write chip, is the best choice in the development of smart meters and portable hand-held devices.

MF RC522 use the advanced modulation system, fully integrated at 13.56MHz with all kinds of positive non-contact communication protocols. Support 14443A compatible answer signal. DSP deal with ISO14443A frames and error correction. Furthermore, it also supports rapid CRYPTO1 encryption to validate Mifare series products. MFRC522 support Mifare series higher speed non-contact communication, duplex communication speed up to 424 kb/s. As a new family member in 13.56MHz RFID family, MF RC522 has many similarities to MF RC5200 and MF RC530 and also has more new features.

This module can fit directly in handheld devices for mass production. The module uses the 3.3V power supply and can communicate directly with any CPU board by connecting through SPI protocol, which ensures reliable work, high reading distance.

• Integrated MF RC522
• 13.56MHz contactless communication card chip
• The low-voltage, low-cost, small size of the non-contact card chip to read and write
• Suitable for Smart meters and portable handheld devices
• Advanced modulation and demodulation concept completely integrated into all types of 13.56MHz passive contactless communication methods and protocols
• 14443A compatible transponder signals
• ISO14443A frames and error detection
• Supports 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
• Low cost, and ideal for user equipment development
• The reader and RF card terminal design meet advanced applications development and production needs
• Can be directly loaded into the various reader molds, very convenient

• 1 x RC522 RFID Card Reader Module 13.56MHz

RFID Reader/Writer RC522 SPI S50 CARD AND KEYCHAIN which works on non-contact 13.56mhz communication, is designed by NXP as low power consumption, low cost, and compact size read and write chip, is the best choice in the development of smart meters and portable hand-held devices.

It uses an advanced modulation system, fully integrated at 13.56MHz with all kinds of positive non-contact communication protocols. Support 14443A compatible answer signal. DSP deals with ISO14443A frames and error correction.

This module can fit directly in handheld devices for mass production. The module uses the 3.3V power supply and can communicate directly with any CPU board by connecting through the SPI protocol, which ensures reliable work, good reading distance.

• Highly integrated analog circuitry to demodulate and decode responses
• Supports ISO/IEC 14443 A/MIFARE
• Typical operating distance in reading/Write mode up to 50 mm
• Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd
• SPI up to 10 Mbit/s
• FIFO buffer handles 64 bytes send and receive
• Flexible interrupt modes
• Power-down by software mode
• Programmable Timer
• 2.5 V to 3.3 V power supply
• CRC coprocessor
• Internal self-test

• 1 x RFID-RC522 Reader/Write Module
• 1 x Standard blank RFID card
• 2 x A Straight & right-angle header strip
• 1 x Special-shaped keychain RFID tag

360° Degree Rotary Encoder Module Brick Sensor is a rotary input device (as in knob) that provides an indication of how much the knob has been rotated AND what direction it is rotating in. It’s a great device for stepper and servo motor control.  You could also use it to control devices like digital potentiometers.

360° rotary Degree encoder, is an incremental electro-mechanical device that converts the angular position or motion of a shaft or axle to digital code. The output of incremental encoders provides information about the motion of the shaft, which is typically further processed in processor/controllers into information such as speed, distance, and position.

Note: This module does not come with a fitting nut or washer , you have to buy it separately (the size required is 6.6mm)

• 1 x 360° Degree Rotary Encoder

Knob in the form of an encoder with a button that allows you to create a simple user interface. The module sends a digital signal on the SIA and SIB pins, depending on the direction of rotation. It works with voltages from 3 V to 5.3 V.

The sensor has a 5 pin connector with digital outputs SIA, SIB and SW to be attached to the pin of the microcontroller, e.g. Arduino.

Operating principle:
Incremental encoder is a kind of rotation sensor for translating the rotary displacement into a sequential of digital pulse signal. The displacement can be gained by counting the number of the pluses outputted in the course of clockwise or anticlockwise rotation. Comparing with the potentiometer, the rotary counter has no limit for counting. So, there is a reset button provided to reset the counter to the initial state, restarting at 0

• It detects the clockwise and counterclockwise rotation
• The number of steps in 360°: 20 steps
• Button in the knob
• Module dimensions: 32 x 15 mm

• 1 x Rotation Sensor
• 1 x 5-pin custom connector jumper wire

The GY-271 is supposed to have an HMC5883L, but some boards have a QMC5883L which has the same basic capability, but is not compatible with the H. The GY-271 QMC5883L 3-axis Electronic Compass Module Magnetic Field Sensor is designed for low field magnetic sensing with a digital interface and it is perfect to give precise heading information. If you get a GY-271 board and observe an I2C address of 0x0C and read back nothing but zeros from the board, then you probably have a QMC5883L chip! 

This compact sensor fits into small projects such as UAVs and robot navigation systems. The sensor converts any magnetic field to a differential voltage output on 3 axes. This voltage shift is the raw digital output value, which can then be used to calculate headings or sense magnetic fields coming from different directions.

A development board that provides a simple interface for the HMC5883L (three-axis magnetic field module).

In our Multirotor category you will find different multirotor components, to check out more multirotor controllers click on the following category,

Multirotor Controller

HMC5883L and QMC5883L module don’t have too much difference. HMC5883L is made by Honeywell. but because the production is about to be stopped, so we use a similar compass module-QMC5883L instead. QMC5883L is made by a Chinese company, they get the production authorization of HMC5883L from Honeywell, and rename it QMC5883L. So QMC5883L and HMC5883L basically are the same, they shares the same hardware design. Just their register is a bit different. We only need to change the software a bit.

• 3-axis magnetic electronic compass.
• Precise heading information.
• Fits into small projects easily.
• I2C communication.

• 1 x GY-271 QMC5883L 3-axis Electronic Compass Module
• 2 x 5 * 1 Male Burg Connectors

The Digital LDR Module is used to detect the presence of light / measuring the intensity of light. The output of the module goes high in the presence of light and it becomes low in the absence of light. The sensitivity of signal detection can be adjusted using the potentiometer.

Use it to detect the light brightness in your environment and decide to switch OFF or ON light? Or maybe to adjust the brightness of the LED of your house?

You can adjust the threshold (sensitivity) of the digital output by tuning the onboard variable resistor (potentiometer). Simple usage as it is the digital output, so you will know is the light present and decide what to do with it.

It comes with an M3 mounting hole for ease of attaching it to an object. Onboard, it provides an LDR, high sensitivity and commonly being used for light detection. The module comes with a power LED and a status LED as an indicator.

LDR Module Photosensitive resistor module most sensitive to environmental light intensity is generally used to detect the ambient brightness and light intensity.

How it Works :

1. Module light conditions or light intensity reach the set threshold, DO port output high when the external ambient light intensity exceeds a set threshold, the module D0 output low;
2. Digital output D0 directly connected to the MCU, and detect high or low TTL, thereby detecting ambient light intensity changes;
3. Digital output module DO  can directly drive the relay module, which can be composed of a photoelectric switch.

Pin Details :

VCC ↔ 3.3V to 5V DC.
GND ↔ Ground.
DO ↔ Digital Output.

• LM393 based design.
• It can detect ambient brightness and light intensity.
• Adjustable sensitivity (via blue digital potentiometer adjustment).
• Output Digital – 0V to 5V, Adjustable trigger level from preset.
• LEDs indicating output and power.

• 1 x Digital LDR Module

This LM393 Photosensitive Light-Dependent Control Sensor LDR Module is using a high-quality LM393 voltage comparator. Easy to install using the sensitive type photosensitive resistance sensor the comparator output signal gives a clean and good waveform.

Driving ability is 15mA with the adjustable potentiometer, it can adjust the brightness of the light. Working voltage is 3. 3V to 5v. Where output is a digital switch output. Since this module is sensitive to the light, usually used for detecting the ambient brightness and light intensity.

You can use this board digital output DO port drive relay module directly(our store on sale these relay modules), and can also use as a photoelectric switch. The analog output ao connects with ad module and it can get more precise light intensity value through the ad-converter.

Interface Pin :

• VCC: Positive power supply
• GND: Ground
• D0: Digital output signal
• A0: Analog Output Signal

• It comes with Mounting Hole Screw
• Easy to install
• Signal output indicator light.
• LDR module 4 PIN
• Able to detect ambient brightness and light intensity Adjustable sensitivity (via blue digital potentiometer adjustment)
• Output: DO digital switch output (0 and 1), AO analog voltage output Compatible with Arduino, Raspberry, and other microcontroller board

• 1 x LM393 Photosensitive Light-Dependent Control Sensor LDR Module

It is a PT334-6C 5mm Phototransistor. PT334-6C is a high speed and high sensitive silicon NPN epitaxial planar phototransistor in a standard 5Φ package. Due to is water clear epoxy the device is sensitive to visible and near-infrared radiation.

• 10 x PT334-6C 5mm Phototransistor

A sound sensor is defined as a module that detects sound waves through their intensity and converts it to electrical signals.

The sound detection sensor module for Arduino detects whether the sound has exceeded a threshold value. Sound is detected via microphone and fed into an LM393 op-amp. The sound level set point is adjusted via an onboard potentiometer. When the sound level exceeds the set point, an LED on the module is illuminated and the output is sent low.

Specifications :

• Operating voltage 3.3V-5V
• Outputs digital switching output (high and low levels 0 and 1
• Operating current (Vcc=5V): 4-8mA
• Microphone sensitivity (1Khz): 52-48dB
• Microphone Impedance: 2.2KΩ
• Microphone Frequency: 16-20Khz
• Microphone S/N ratio: 54dB
• Signal output indication
• Single channel signal output
• Outputs low level and the signal light when there is sound

• 1 x Sound Detection Sensor Module

LM386 is an audio power amplifier with features of low power consumption, adjustable voltage gain, wide voltage power supply, fewer requirements on peripheral components, and minimum total harmonic distortion. LM386 can be applied to consumer products with low voltage requirements. To minimize the number of peripheral components used, the voltage gain should be set to 20.

In the case of working with an MCU:

• VCC ↔ 3.3V ~ 5.3V
• GND ↔ power supply ground
• AOUT ↔ MCU.IO (analog output)
• DOUT ↔ MCU.IO (digital output)

Specifications :

• Operating voltage 3.3V-5V
• Outputs digital switching output (high and low levels 0 and 1
• Operating current (Vcc=5V): 4-8mA
• Microphone sensitivity (1Khz): 52-48dB
• Microphone Impedance: 2.2KΩ
• Microphone Frequency: 16-20Khz
• Microphone S/N ratio: 54dB
• Signal output indication
• Single channel signal output
• Outputs low level and the signal light when there is sound

• Audio amplifier
• Ambient sound detection
• Sound level detection

• Onboard audio power amplifier LM386
• Audio signal gain up to 200
• Adjustable accuracy
• Signal output indicator

• 1 x Sound Sensor
• 1 x 4-pin custom connector jumper wire

This is an Analog Sound Sensor Microphone Module for Arduino. Some Applications like interactive voice switch and loudness level indicator is very suited for this module.

• Detectable sound signal size
• Built-in filter-rectifier circuit, DC signal output
• Good sensitivity, built-in amplifier circuit, adjustable gain
• Voltage signal for sound intensity can be obtained by AD conversion
• Analog voltage signal output, signal amplitude VCC/2
• Compatible for Arduino sensor interface

• 1 x Analog Sound Sensor Microphone Module for Arduino

This Voice microphone is Multi-Channel and is suitable for mobile phones, telephones, tape recorders, voice-activated toys, computers, and other products. The sensitivity is in accordance with the IEC standard, and the sensitivity of “pa” is increased by 20dB, which is the same as the sensitivity of the “Ubar” unit.

• Low noise
• Low power consumption
• Suitable for a wide variety of Electronic products
• Multi-channel
• Frequency Range: 50 – 20KHz
• Microphone sensitivity 56 – 58DB

• 3 x Microphone 9*7mm

This is a Sound Sensor Microphone Module. Some Applications like interactive voice switch and loudness level indicator is very suited for this module.

• There is a mounting screw hole 3mm
• 5v DC power supply
• With analog output
• There are threshold level output flip
• Power indicator light
• The comparator output is light
• High Sensitivity Sound Microphone Sensor Detection Module
• Electric condenser microphone
• Low-level output signal used for sound control light

• 1 x Analog Sound Sensor Microphone Module for Arduino

Sound Detection Module Sensor for Intelligent Vehicle Compatible With Arduino is a Single channel signal output Sensor. The output is effective to the low-level sound signal with good fidelity, When there is sound, outputs low level and signal light.

It can be used for Acoustic control light, give sound and light alarm working with the Photosensitive sensor, and sound control, sound detect. (The Maximum induction distance is 0.5M)

Note: This sensor only recognizes the availability of sound (vibration principle) cannot identify the size of the sound or the specific frequencies of sound.

• Uses LM393, Electret condenser microphone
• Signal output Indication
• Single channel signal output
• The output effective signal is low level
• Can detect the intensity of the sound environment
• With the retaining bolt hole, convenient installation

• 1 x Sound Detection Module Sensor

LM393 Sound Detection Sensor Module for Arduino detects whether the sound has exceeded a threshold value. The sound is detected via a microphone and fed into an LM393 op-amp.

The sound level setpoint is set via an onboard potentiometer. When the sound level exceeds the setpoint, an LED on the module is illuminated and the output is sent low.

Note: This sensor only recognizes the availability of sound (vibration principle) cannot identify the size of the sound or the specific frequencies of sound.

• Signal output indication
• The output is digital
• Single-channel signal output
• With the retaining bolt hole, convenient installation
• Output low level and the signal light when there is sound

• 1 x LM393 Sound Detection Sensor Module

Magic Light Cup Module is a board which has a led and a mercury tilt switch. Using PWM to drive the LEDs on the module you can achieve the effect of light being “magically” transferred from one module to the other when tilting them. In short, it’s 2 components combined, a mercury tilt switch and a led. On tilting the module mercury inside small tube connect the switching point and make switch ON while tilting it to other side move the mercury and it disconnects the circuit and switch get OFF. The module operates on 5V DC supply.

So the magic in the name of this module is because when you tilt the switch, the led will turn on and off. And Of course, it is also possible to connect it to the NodeMCU.

Pin Connection with Arduino : 

• G: GND
• Positive: 5v DC
• S: Arduino pin 8
• L: Arduino pin 9

Pin Connection with Node MCU : 

• Connect G to a GND port of your NodeMCU
• Connect to a 3.3v port of your NodeMCU
• Connect S to a digital port on your NodeMCU (in my example port D3)
• Connect L to a digital port on your NodeMCU (in my example port D5)

• 1 x Magic Cup Light Module

Speak (Voice) Recognition Module V3 compatible with Arduino is a compact and easy-control speaking recognition board.

Speak (Voice) Recognition Module V3 product is a speaker-dependent voice recognition module. It supports up to 80 voice commands in all. Max 7 voice commands could work at the same time. Any sound could be trained as the command. Users need to train the module first before let it recognizing any voice command.

This board has 2 controlling ways: Serial Port (full function), General Input Pins (part of a function). General Output Pins on the board could generate several kinds of waves while the corresponding voice command was recognized.

What are the updated features?

We have Voice Recognition module V2 and it supports 15 commands in all and only 5 commands at the same time. On V2, voice commands are separated into 3 groups while you training it. And only one group (5 commands) could be imported into Recognizer. It means only 5 voice commands are effective at the same time.

On V3, voice commands are stored in one large group like a library. Any 7 voice commands in the library could be imported into recognizer. It means 7 commands are effective at the same time. 

• Support a maximum of 80 voice commands, with each voice 1500ms (one or two words speaking)
• Maximum 7 voice commands effectively at the same time
• Arduino library is supplied
• User-control General Pin Output
• Analog Interface: 3.5 mm mono-channel microphone connector  microphone pin interface

• 1 x Voice Recognition Module V3
• 1 x Microphone

The GY-273 module is based on the Honeywell QMC5883L IC for low-field magnetic sensing with a digital interface for applications such as low cost compassing and magnetometry. The QMC5883L includes state-of-threat, high-resolution QMC118X series magneto-resistive sensors plus an ASIC containing amplification; automatic degaussing strap drivers, offset cancellation, and a 12-bit ADC that enables 1° to 2° compass heading accuracy. The I2C serial bus allows for an easy interface.

The QMC5883L utilizes Honeywell’s Anisotropic Magnetoresistive (AMR)technology that provides advantages over other magnetic sensor technologies. These anisotropic, directional sensors feature precision in-axis sensitivity and linearity.

These sensors’ solid-state construction with very low cross-axis sensitivity is designed to measure both the direction and the magnitude of Earth’s magnetic fields, from milli-gauss to 8 gausses. Honeywell’s Magnetic Sensors are among the most sensitive and reliable low-field sensors in the industry.

Note: Sometimes markings on these boards vary slightly (e.g. Some may be labeled ‘HW-127’ instead of ‘GY-273’ even though they are otherwise identical).

Applications :

• Auto and personal navigation
• UAV systems
• Robotic navigation
• Location-based services (LBS)

• 1-2 degree heading accuracy
• A range of -8 to 8 Gauss
• Communication: IIC communication protocol

• 1 x GY-273 QMC5883L 3 Axis Module Magnetic Field Sensor

The ADXL335 is a small, thin, low-power, complete 3-axis accelerometer with signal conditioned voltage outputs. The ADXL335 Module 3-axis Analog Output Accelerometer measures acceleration with a minimum full-scale range of ±3 g.

It can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration. This breakout board comes with an onboard voltage regulator and works at both 3.3V & 5V (3-5V).

An accelerometer is an electro-mechanical device that will measure acceleration forces. These forces may be static, like the constant force of gravity pulling at your feet, or they could be dynamic – caused by moving or vibrating the accelerometer.

Applications :

• FPV, RC, and Robots systems
• GPS navigation systems
• Impact recognition and logging
• Gaming and virtual reality input devices
• Motion-activated functions
• Intelligent power saving for handheld devices
• Vibration monitoring and compensation
• Free-fall detection
• 6D-orientation detection

• Onboard LDO Voltage regulator
• Can be interfaced with a 3V3 or 5V Microcontroller.
• All necessary Components are populated.
• Ultra-Low Power: 40uA in measurement mode, 0.1uA in standby@ 2.5V
• Tap/Double Tap Detection
• Free-Fall Detection
• Analog output
• Build-in ultra-low noise linear LDO voltage regulator
• Built-in onboard filters, which reduce noise from the motor and other high current electronics
• Power LED
• Designed for 5V logic level

• 1 x ADXL335  3-axis Analog Output Accelerometer Module angular transducer