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Low Power MAX30102 Heart Rate Oxygen Pulse Breakout for Arduino Replace MAx30100
 

Low Power MAX30102 Heart Rate Oxygen Pulse Breakout for Arduino Replace MAx30100
 

Product parameters:

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2016 New 8W USB Input DC-DC 5V to 12V Converter Step Up Module Power Supply Boost Module
 
 
 

 
 
MQ-2 sensor Description:
MQ-2 gas sensor sensitive material used in the clean air low conductivity tin oxide (SnO2). When there is the environment in which the combustible gas sensor, conductivity sensor with increasing concentration of combustible gases in air increases. Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-2 gas sensor high on gas, propane, hydrogen sensitivity of detection of natural gas and other flammable vapors are also very good. This sensor can detect a variety of flammable gas, is a low-cost sensors for a variety of applications.
 
 
Module Applications:
Gas may be used in homes and factories leakage monitoring device suitable for the detection of gas, butane , propane , methane , smoke , etc. ;
Module Features :
1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2 , the switching signal having a DO (TTL) output and analog output AO ;
3, TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
4 , analog output voltage with the higher concentration of higher voltage.
5, a gas, natural gas, city gas , smoke better sensitivity.
6 , there are four screw holes for easy positioning ;
7 Product dimensions : 32 (L) * 20 (W) * 22 (H)
8 , has a long life and reliable stability
9 , rapid response and recovery characteristics
 
Electrical properties:
Input voltage : DC5V Power consumption ( current ): 150mA
DO output : TTL digital 0 and 1 ( 0.1 and 5V)
AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V
Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .
 
 
 
 
 

Highlights:
This module is definitely using imported chip, performance is very good, as long as you have a 3V ~ 5V battery (lithium batteries, nickel hydrogen batteries, etc.) can be easily obtained ± 12V voltage.
Ultra-small size, easy to install.
Input voltage range: 2.8V ~ 5.5V
Output voltage: ± 12V (V : 12V, V-: -12V)
Output Current: 12V stable output current capability of 50ma, -12V stable output current capability 30ma, almost meet all ADC, DAC and amplifier applications.
Size: 2.4 * 1.2cm
Applications:
This module can be used as ADC, DAC or amplifier, dual power supply.
Note:
Due to a share of the diode voltage, 12V the actual output higher than the theoretical 0.4-0.6V.
This module is a small current, do not take high-power load.

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GY-45 MMA8452 Modules Digital Triaxial Accelerometer High-precision Inclination Module

 
APPLICATIONS:
 
Car navigation voice broadcast;
Road transport inspectors, toll stations voice prompts;
Railway station, bus safety inspection voice prompts;
Electricity, communications, financial business hall voice prompts;
Vehicle into and out of the channel verify that the voice prompts;
The public security border control channel voice prompts;
Multi-channel voice alarm or equipment operating guide voice;
The electric tourist car safe driving voice notices;
Electromechanical equipment failure alarm;
Fire alarm voice prompts;
The automatic broadcast equipment, regular broadcast.
 
SPECIFICATION:
 
Supported sampling rates (kHz): 8/11.025/12/16/22.05/24/32/44.1/48
24 -bit DAC output, support for dynamic range 90dB , SNR support 85dB
Fully supports FAT16 , FAT32 file system, maximum support 32G of the TF card, support 32G of U disk, 64M bytes NORFLASH
A variety of control modes, I/O control mode, serial mode, AD button control mode
Advertising sound waiting function, the music can be suspended. when advertising is over in the music continue to play
Audio data sorted by folder, supports up to 100 folders, every folder can hold up to 255 songs
30 level adjustable volume, 6 -level EQ adjustable

QC3.0 QC2.0 USB DC-DC Buck Converter Charging Step Down Module 6-32V 9V 12V 24V to Fast Quick Charger Circuit Board 3V 5V 12V

1.Intelligent electricity quantity display board;slightly push trigger switch,it will auto power off after 3 seconds display
2.Static power consumption 2.3MA,and it can be disregarded
3.Plug-in indicator light color:25% red,other 3 pcs are green
4.Application Fields:battery electricity quantity detecting;only needs to connect seperately battery's positive and negative with electricity quantity board's positive and negative;slightly push trigger switch,then it can be able to detect current electricity quantity.4 LEDs will divide battery comprehensive capacity into 4 phases;slightly push the switch,electricity quantity will be shown
 
1S:Display indication:25% first light is on(voltage:3.4V);50% second light is on (voltage:3.6V);75% third light is on (voltage:3.8V);100% fourth light is on (voltage:4V)
5.Size:44*9*7.5mm
2S:         Display indication:25% first light is on(voltage:6.6V);50% second light is on (voltage:7V);75% third light is on (voltage:7.5V);100% fourth light is on (voltage:8V)  
3S: Display indication:25% first light is on(voltage:10.4V);50% second light is on (voltage:11V);75% third light is on (voltage:11.5V);100% fourth light is on (voltage:12.4V)    
4S:    Display indication:25% first light is on(voltage:13.8V);50% second light is on (voltage:14.5V);75% third light is on (voltage:15V);100% fourth light is on (voltage:16.2V)    

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Raspberry Pi Zero Acrylic Clear Case  Shell Acrylic Enclosure Box for RPI Zero
 

 
Features:
Sensor uses HX1838, high sensitivity.
Operating voltage 5V.
Output form: Digital output.
VCC: 3.3V-5V external voltage (can be directly connected to the 5v micro-controller and 3.3v micro-controller).
GND: external GND.
IN: external micro-controller I/O port, I/O port has been designed 10K pull-up resistor.
Kit theory test distance of about 5-8 meters, but the practical application depends on the ambient factors you use, as well as the middle barrier (such as diaphragm, glass, obstructions or other material blocking), receiving head with HX1838 with power work instructions lights, receive 38K frequency any remote coding data.
Receiver Side Schematic You can see the Pictures.
Fully tested to work with the Raspberry Pi
Raspberry Pi Board Not Included!
Package includes:
1 x Brand New Raspberry Pi Infrared Remote Control IR Receiver Module DIY Kit HX1838
 

Smart Electronics Uno R3 Case Enclosure Transparent Acrylic Box Compatible with UNO R3
 
 
 
 

1 optical coupling isolation module
5.0 pitch screw terminal is convenient for wiring
The default input optocoupler terminal voltage is 5V. In addition, 12V -30V voltage input can be ordered to contact the shopkeeper
(If there is no indication and no wangwang contact, according to the default delivery).
This board role
1 MCU output level to drive the motor motor and other perceptual devices to do isolation function anti-interference protection MCU part of the circuit.
2 MCU output level is low, the driven module driving voltage is high for level matching such as some PLC input to 24V voltage can be used to convert this module
3 Used for inverter, can invert the input signal output
For example, if the output signal level of a sensor is 12V and the voltage of a single chip microcomputer is 5V, this module can be used for isolation and detection.
5 current amplification, such as MCU output current is too small to drive some circuits, you can use this module for amplification
.
EL817 features:
Isolation voltage is greater than 3000V
Maximum input current 50MA
Operating current >1MA
Maximum output current 50MA (required input current in 15-20mA)
Working temperature -55~110 degrees.
Maximum application signal frequency: 5KHz

1 optical coupling isolation module
5.0 pitch screw terminal is convenient for wiring
The default input optocoupler terminal voltage is 5V. In addition, 12V -30V voltage input can be ordered to contact the shopkeeper
(If there is no indication and no wangwang contact, according to the default delivery).
This board role
1 MCU output level to drive the motor motor and other perceptual devices to do isolation function anti-interference protection MCU part of the circuit.
2 MCU output level is low, the driven module driving voltage is high for level matching such as some PLC input to 24V voltage can be used to convert this module
3 Used for inverter, can invert the input signal output
For example, if the output signal level of a sensor is 12V and the voltage of a single chip microcomputer is 5V, this module can be used for isolation and detection.
5 current amplification, such as MCU output current is too small to drive some circuits, you can use this module for amplification
.
EL817 features:
Isolation voltage is greater than 3000V
Maximum input current 50MA
Operating current >1MA
Maximum output current 50MA (required input current in 15-20mA)
Working temperature -55~110 degrees.
Maximum application signal frequency: 5KHz

1 optical coupling isolation module
5.0 pitch screw terminal is convenient for wiring
The default input optocoupler terminal voltage is 5V. In addition, 12V -30V voltage input can be ordered to contact the shopkeeper
(If there is no indication and no wangwang contact, according to the default delivery).
This board role
1 MCU output level to drive the motor motor and other perceptual devices to do isolation function anti-interference protection MCU part of the circuit.
2 MCU output level is low, the driven module driving voltage is high for level matching such as some PLC input to 24V voltage can be used to convert this module
3 Used for inverter, can invert the input signal output
For example, if the output signal level of a sensor is 12V and the voltage of a single chip microcomputer is 5V, this module can be used for isolation and detection.
5 current amplification, such as MCU output current is too small to drive some circuits, you can use this module for amplification
.
EL817 features:
Isolation voltage is greater than 3000V
Maximum input current 50MA
Operating current >1MA
Maximum output current 50MA (required input current in 15-20mA)
Working temperature -55~110 degrees.
Maximum application signal frequency: 5KHz

1 optical coupling isolation module
5.0 pitch screw terminal is convenient for wiring
The default input optocoupler terminal voltage is 5V. In addition, 12V -30V voltage input can be ordered to contact the shopkeeper
(If there is no indication and no wangwang contact, according to the default delivery).
This board role
1 MCU output level to drive the motor motor and other perceptual devices to do isolation function anti-interference protection MCU part of the circuit.
2 MCU output level is low, the driven module driving voltage is high for level matching such as some PLC input to 24V voltage can be used to convert this module
3 Used for inverter, can invert the input signal output
For example, if the output signal level of a sensor is 12V and the voltage of a single chip microcomputer is 5V, this module can be used for isolation and detection.
5 current amplification, such as MCU output current is too small to drive some circuits, you can use this module for amplification
.
EL817 features:
Isolation voltage is greater than 3000V
Maximum input current 50MA
Operating current >1MA
Maximum output current 50MA (required input current in 15-20mA)
Working temperature -55~110 degrees.
Maximum application signal frequency: 5KHz

1 optical coupling isolation module
5.0 pitch screw terminal is convenient for wiring
The default input optocoupler terminal voltage is 5V. In addition, 12V -30V voltage input can be ordered to contact the shopkeeper
(If there is no indication and no wangwang contact, according to the default delivery).
This board role
1 MCU output level to drive the motor motor and other perceptual devices to do isolation function anti-interference protection MCU part of the circuit.
2 MCU output level is low, the driven module driving voltage is high for level matching such as some PLC input to 24V voltage can be used to convert this module
3 Used for inverter, can invert the input signal output
For example, if the output signal level of a sensor is 12V and the voltage of a single chip microcomputer is 5V, this module can be used for isolation and detection.
5 current amplification, such as MCU output current is too small to drive some circuits, you can use this module for amplification
.
EL817 features:
Isolation voltage is greater than 3000V
Maximum input current 50MA
Operating current >1MA
Maximum output current 50MA (required input current in 15-20mA)
Working temperature -55~110 degrees.
Maximum application signal frequency: 5KHz

1 optical coupling isolation module
5.0 pitch screw terminal is convenient for wiring
The default input optocoupler terminal voltage is 5V. In addition, 12V -30V voltage input can be ordered to contact the shopkeeper
(If there is no indication and no wangwang contact, according to the default delivery).
This board role
1 MCU output level to drive the motor motor and other perceptual devices to do isolation function anti-interference protection MCU part of the circuit.
2 MCU output level is low, the driven module driving voltage is high for level matching such as some PLC input to 24V voltage can be used to convert this module
3 Used for inverter, can invert the input signal output
For example, if the output signal level of a sensor is 12V and the voltage of a single chip microcomputer is 5V, this module can be used for isolation and detection.
5 current amplification, such as MCU output current is too small to drive some circuits, you can use this module for amplification
.
EL817 features:
Isolation voltage is greater than 3000V
Maximum input current 50MA
Operating current >1MA
Maximum output current 50MA (required input current in 15-20mA)
Working temperature -55~110 degrees.
Maximum application signal frequency: 5KHz

5X7CM Double Side Prototype PCB Breadboard Universal Board For Arduino UNO R3 ESP8266 WIFI ESP-12F ESP-12E ESP32S ESP32 50x70mm
 
 
 
 
 
 
 
 
 
 
 
 

3 d printer Makerbot accessories MK7 / MK8 heat sink 40 * 40 * 11
 
 
Center hole goods size : 12 mm
 
Screw mounting holes 3 mm
 
Mounting holes from 31 mm
 
Fin length 40 mm width 40 mm 11 mm thick

 
TLP281 4 CH 4-Channel Opto-isolator IC Module For Arduino Expansion Board High And Low Level Optocoupler Isolation 4 Channel

Product features:
8 channels logic high voltage and low voltage logic two-way transformation, realize the Ax and Bx bidirectional transfers.
Conversion level range: 1.8 V to 6 V
Module size: 28 mm X 27.5 mm
Instructions: (to 3.3 V, 5 V to each other)
VCCA 3.3 V power supply
VCCB connect 5 v power supply
GND connect power cathode, two power supply
Ax input 3.3 V TTL level, Bx will output 5 V TTL level
Bx type 5 V TTL level, Ax the output 3.3 V TTL level
 
 
 

CJMCU-TEMT6000
An ambient light sensor simulation light intensity module Visible light sensor
TEMT6000 sensor maximum sensitivity of 570 nm, it has a plus or minus 60 ° wide half Angle of sensitivity.Although the device is sensitive to ambient light, but it inhibits infrared (IR) spectra, which can provide a similar higher visible spectrum response of the "eye".

 
Highlights:
By adjusting the potentiometer can set the length of time
MicroUSB 5.0V power supply with an input port, easy to use
5 ~ 30V wide supply voltage
External signal trigger and key trigger in two ways
With a relay indicator
Anti-interference ability, the relay at various interference will not misoperation, suitable for industrial control
Features:
1. Working voltage: wide voltage 5 ~ 30V, two power supply interface
2. Operating mode: the initial state, module outputs: normally open (NO) and the common terminal (COM) is disconnected, normally closed (NC) and the common terminal (COM) connected
Providing a low pulse signal, or touch trigger key, relay and indicator lights, the output of the state: normally open (NO) and Common (COM) connected, normally closed (NC) and the common terminal (COM) is disconnected. After 0-24 seconds (this time can be adjusted according to your needs) relay off, back to the state before the trigger
3. The length of timing adjustment by potentiometer, default 0-24 seconds. If you need more time, you can replace the larger capacitor (C2) or potentiometer. Delay time T = 1.1RC. For example: 22uf capacitor and resistor 1M, then T = 1.1 * 0.000022 * 1000000 = 24.2 seconds
4. With a relay indicator
5. The module can control: 10A / 250VAC, 10A / 30VDC load
6. The relay has a freewheeling protection
7. Trigger signal input terminal is designed with a pull and filter circuit, enhanced anti-jamming capability, suitable for industrial control. Many manufacturers add the optocoupler isolation, but there is no separation between module's ground and signal's ground, would not achieve the interference effect. After the test found that only enhance the stability of the signal input port to interference, regardless of this module is under electromagnetic interference environment, or in the power-up and power-down moment, the relay will not produce misoperation
8. Dimensions: 5.5 * 2 * 1.8cm / 2.16 * 0.78 * 0.7"
Applications:
1. Burglar, alarm, building delay switch, sound and light control light switch
2. Delay powered vehicle equipment, to prevent large currents generated as the car starts burning vehicle equipment
3. Prevent simultaneous launch multiple devices cause burning appliances or fail to start
Quantity:1pc
 
     
 
1 x 5V -30V Micro USB Power Delay Timer Control Module

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Main features
- Intelligent reverse polarity protection, power supply reverse polarity will not damage the IC.
- IC control circuit and a power LED spot light utility.
- Control circuit chip with RGB components in a package in 5050, to form a complete external control pixels.
- built-in signal shaping circuit, any one pixel after receiving the signal through the waveform shaping and then output to ensure line waveform distortion will not accumulate.
- Built-in power-on reset and brown-out reset circuit.
- trichromatic color of each pixel can realize 256 highlighted, complete 16777216 colors of all true color display, the scanning frequency is not less than 400Hz / s.
- serial cascade interface, through a signal line to complete the receiving and decoding of data.
- transfer transmission distance between any two points in less than 5 meters without any additional circuitry.
- When the refresh rate of 30 frames / sec, cascading number of not less than 1024 points.
- data transmission speeds of up to 800Kbps.
- The color of the light highly consistent, cost-effective.

 
HX711 Dual-channel 24-bit A/D Conversion Weighing Sensor Module with Metal Shied

 
 
 
 
 

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Color: Green
Size : 58 ( mm ) x 35 ( mm )

Description:
 
Module function:
This is the I/O extended module, which use for I2C interface, you can use two of the module to extend 8 I/O. Support cascading, and you can use at most 8 modules to extend 64 I/O at the same time. Can be changed the address by set toggle switch
PCB Size: 36 x 16mm/1.41*0.62"
Every 2 seconds, make P0-P7 port output High level, Low level, and put 3 toggle switches to ON, the address of module is 0x27
Quantity:1pc
 
Package including:
1 x Extended Module
 
 
 

Features:
Input: 7-24V
Max Current: 1A
Shipping list:
1. DC Power Shiled  x1PCS
2. Pins  x2PCS
3. Connector  x1PCS

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GY-MAX4466 electret microphone amplifier MAX4466 adjustable amplifier module
 
 
 
 
 
 
 
 
 

Baby Name: Double USB output module 3A Step-Down
 
Input: 6V-40V
 
Output: 5V / 3A (MAX)
 
Efficiency: 92% (MAX)
 
Switching frequency: 150KHZ
 
Working temperature: -40 'C - 85 'C
 
Baby Size: L_59mm * W_21mm * H_17mm
 
Load capacity: Maximum output 3A (with two phones simultaneously)
 
Scope: mobile power, mobile phones, flat-panel powered devices USB5V
 
 
 
 

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GY-302 BH1750 Chip la intensidad de la luz módulo de luz
Descripción:
Tipo: GY-302
Tamaño: 13,9mm X 18,5mm
El original BH1750FVI ROHM chip
Fuente de alimentación: 3-5 v
Rango de datos: 0-65535
Sensor integrado y convertidor BIAD
Salida digital directa, evitando el complicado cálculo, calibración omit
No distingues entre la luz ambiental
Cerca de la Sensibilidad visual de las características espectrales
Para una amplia gama de brillo de 1 lux de alta precisión de medición
 
 
Crisol de grafito mini horno de oro de la antorcha de fusión del metal:
GY-302 BH1750 la intensidad de la luz módulo de luz

 
 
 
 
1, the new 5V Relay Module
2, can be used as microcontroller development board module can be used as home appliance control
3,5 V-12V to TTL control signal
4, the control signal DC or AC, 220V AC load can be controlled.
5, there is a normally open and one normally closed contact
6, a power indicator light
7, a control indicator, pull off, disconnect does not shine
8, transistor drive to increase the relay coil control pins high impedance.
9, the control pin has a pull-down circuit to prevent malfunction relay vacant
 
 
 
 
 
 

MB102 Breadboard Power Supply Module 3.3V 5V For Arduino Solderless Bread Board Voltage Regulator DIY
 
 
 
 
 
 
 
Brand new & high quality
 
 
Breadboard power supply module, compatible with 5 V, 3.3 V
 
Apply to MB102 breadboard
 
Input voltage: 6.5-12 V (DC) or USB power supply
 
Output voltage: 3.3V/5V can switch over
 
Maximum output current: <700 ma
 
Fluctuation two road independent control, can switch over to 0 V, 3.3 V, 5 V
 
On-board two groups of 3.3V, 5V DC output plug pin, convenient external lead use.
 
Please notice: this item only a Power Supply Module, Breadboard is not included
 

PLCC32 to DIP32 programmer IC adapter socket
 
 
 
 
 
 
 

PLCC32 to DIP32 programmer IC adapter socket
 
 
 
 
 
 
 

 
CJMCU-711 is designed for high-precision electronic scales designed for 24-bit A / D converter chip. Compared with the same type of other chip that integrates the peripheral circuits including power supply, on-chip clock oscillator and other required the same type of chip, high integration, fast response, strong anti-interference advantages. Reducing the overall cost of the electronic scales and improve the overall performance and reliability. The chip with the rear end of the MCU chip interface and programming is very simple, all control signals from the pin driver, do not need to register the chip programming. Input selector switch can be arbitrarily selected channel A or channel B, its internal programmable low noise amplifier is connected. Channel A programmable gain of 128 or 64, corresponding to the full amount of the differential input signal amplitude was ± 20mV or ± 40mV. Channel B, compared with a fixed gain of 32 for the system parameter detection. The chip can provide the power supply to provide power directly to the A external sensor and chip A / D converter, analog system board without additional power supply. Chip clock oscillator does not require any external components. Automatic power-on reset function to simplify the initialization process boot.
 
Two selectable differential inputs
Rene-chip, low-noise programmable amplifier with selectable gain of 64 and 128
Rene-chip voltage regulator supplies power directly to the external sensor and on-chip A / D converter
Rene-chip clock oscillator requires no external components, if necessary, use an external crystal or clock
· Automatic power-on reset circuit
Simple digital control and serial communication: All are controlled by input pins, the chip registers without programming
* Choose 10Hz or 80Hz output data rate
· Simultaneous rejection of 50Hz and 60Hz power interference
· Power consumption (including power supply circuit): Typical operating current: <1.7mA, shutdown current: <1A
· Operating voltage range: 2.6 ~ 5.5V
Operating temperature range: -20 ~ 85 'C
· SOP-16 16-pin package
 
 
 

PLCC32 to DIP32 programmer IC adapter socket
 
 
 
 
 
 
 

PLCC32 to DIP32 programmer IC adapter socket
 
 
 
 
 
 
 

 
 
 
Product Features:
 
To achieve the best measurement precision, the voltmeter will measure the voltage according to the different automatic moving the position of the decimal point
Can be used for measuring the car / battery car / motorcycle battery voltage, and other forms of voltage
Can be used in all kinds of voltage measurement purposes
Technical Parameters:
Weight:5g
Display color:Green
Display mode:Three 0.36 LED digital tube
update rate: About 500 ms/time
Physical size: 27 x 14 x 5 mm (L*W* H)
Hole diameter:2mm
Input range:4-30V
Power supply:Need the power supply
Lead wire length: 9.5 cm
The minimum input: 4V
The maximum input: 30V
Measurement range:DC 0-200V
Operation temperature: -10 degrees~65 degrees
Measurement accuracy:± (1% 2 Digit)
Mounting holes distance: 27mm
Red line:Power Supply (4-30V )Yellow line:Measure Voltage Black line:Power Supply -, Measure Voltage-
 
 
 
 

GY-302 BH1750 Chip Light Intensity Light Module
Description:
Type: GY - 302
Size: 13.9 mm X 18.5 mm
The original BH1750FVI ROHM chip
Power supply: 3-5 v
Data range: 0-65535
Sensor built-in and bitad converter
Direct digital output, bypassing the complicated calculation, omit calibration
Do not distinguish between ambient light
Close to the visual sensitivity of spectral characteristics
For a wide range of brightness for 1 lux high precision measurement
 
 
Package included:
1 x GY-302 BH1750 Light Intensity Light Module