(1) Mainly applicable to the pressure sensor manufacturing process of 0.02 grade. The 0.02 level means that the output error is in the range of plus or minus 0.02 at full scale. High precision. The specific sensor manufacturing process will be described in detail later.
(2) Directly measure the strain of the member.
The strain gauge is directly attached to the deformation part of the component. When the component is deformed, the resistance value of the strain gauge changes. The resistance strain measuring device (strain gauge) can measure the resistance change of the strain gauge, and convert it into a strain or proportional to the strain. The electrical signal (voltage, current) can be.
(3) Circuit selection (very key red)
The resistance change of the strain gauge is very small, and there must be a proper circuit to detect the slight change. We usually choose a circuit in which the change of the strain gauge resistance can control the circuit so that the output of the circuit can be similar to the resistance change. The electrical signal (voltage or current) can then be properly processed (amplified).
AH35 Series Hall sensor is an analog signal outputs Hall IC, output voltage varies with the intensity of the magnetic field. The sensor chip has built-in reverse voltage protection, voltage
regulators, temperature compensation circuit, Hall voltage generator, signal amplifier etc circuit
uint. Excellent voltage regulator and temperature compensation circuit enable the sensor stable
operation within a wide voltage range and temperature range, the reverse voltage protection circuit
avoids the sensor being reverse voltage damage.
AH3503 3503 TO-92UA Casing Linear Hall Effect Sensor
he sensor module light is adaptable to the environment, it has a pair of infrared transmitting and receiving tube, tube infrared emitting a certain frequency, when detecting direction meet with obstacles (reflecting surface), reflected infrared receiving tube, after the comparator circuit processing, green indicator will light up, at the same time signal output interface and output digital signal (a low level 0V) signal, can be adjusted through the potentiometer knob detection distance, effective distance range 2 ~ 30 cm, the working voltage of 3 .3 V to 5 V
This is Hall Effect magnetic sensor module DC 5V for Arduino.
Small size and high sensitivity. Fast response temperature and good performance. Precision and high reliability.
3144 Series Hall principle of Hall effect switch IC using technology to produce magnetic semiconductor integrated circuit which is determined by the voltage regulator Hall voltage generator differential amplifier Schmidt trigger temperature compensation circuit and the collector electrode open circuit output stage consisting of magnetic sensing circuit the input for the magnetic flux density the output is a digital voltage signal.
This section circuit pipe legs with pure tin production the complete model is 3144EUA-S or 3144LUA-S.
Item Size: 13x15MM
Color: black
Model: KY-003
MQ-4 Methane Natural Gas Sensor Module For Arduino
Power Supply: 5 Volts
Interface Type: Analog & Digital
High Sensitivity to Methane & small sensitivity to smoke & alcohol
Low Cost.
Stable & Long Life.
On board Power indication.
MQ-3 Alcohol Ethanol Gas Sensor Module For Arduino
Sensitive for alcohol, ethanol
Power requirements: 5 VDC @ ~165 mA (heater on) / ~60 mA (heater off)
Current Consumption: 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
Detecting Concentration: 0.05-10mg/L Alcohol
Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
Heater consumption: less than 750mW
Operating temperature: 14 to 122 ?F (-10 to 50?C)
Load resistance: 200k?
Sensitivity S: Rs(in air)/Rs(0.4mg/L Alcohol)?5
Sensing Resistance Rs: 2K?-20K?(in 0.4mg/l alcohol)
Dimensions: 32 x 22 x 16 mm
Imported groove coupler sensor
Groove Width: 5mm
Output state indicator lights
Obscured output high; unobstructed output low
The comparator output, the signal is clean, the waveform, driving ability, more than 15mA
Operating Voltage: 3.3V-5V
The output in the form: Digital switching outputs (0 and 1)
A fixed bolt hole for easy installation
Small plates PCB Dimensions: 3.2 x 1.4cm / 1.25 * 0.55"
Using a wide voltage LM393 comparator
MQ-8 MQ8 Hydrogen Gas Sensor H2 Gas Detection Sensor Module Sensor for Arduino
Main chip: LM393 gas sensor, MQ-8
Working voltage: DC5V
1. With signal output instructions.
2. Dual signal output (TTL level output and analog output)
3. TTL signal output valid for low level. (When the low output electric signal lights up in 4. Normal times, SCM can be directly picked up)
5. Analog 0 ~ 5v voltage, the higher the concentration, the higher the voltage.
6. High sensitivity to hydrogen
7. Can be resistant to ethanol vapor, LPG (petroleum), smoke interference
8. Has a long service life and reliable stability
9. Quick Response Recovery Features
Connected to 5 v power supply, power indicator, no water droplets on induction plate, the DO output high level, switch indicator light out, drop a drop of water on, the DO output for the low level, the switch light is lit,Brush away the water droplets, again to return to, the output high level...
AO analog output, which can be connected to the microcontroller AD mouth detection drops of rainfall in the above size.
DO TTL digital output also can connect to the single chip microcomputer detect whether there is rain
KY-039 5V Finger Detection Heartbeat Sensor Module Detector For Arduino
1.This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger,
a red LED flashes with each pulse
.Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other
side of the finger, phototransistor used to obtain the flux emitted, when the blood pressure pulse by the
finger when the resistance of the phototransistor will be slight changed.
2.Chosing a very high resistance resistor R1, because most of the light through the finger is absorbed,it is
desirable phototransistor sensitive enough.
Resistance can be selected by experiment to get the best results.The most important is to keep the shield
stray light into the phototransistor.
For home lighting that is particularly important because the lights at home mostly based 50HZ or 60HZ
fluctuate, so faint heartbeat will add considerable noise.
MQ-9 MQ9 Carbon Monoxide Gas Alarm Combustible Sensor Module For Arduino
Suitable for home or factory gas leakage monitoring devices.
Have better sensitivity to CARBON MONOXIDE, METHANE, LIQUEFIED PETROLEUM GAS.
High quality dual-panel design, with power indicator and TTL signal output instructions.
DO switching signal (TTL) output and AO analog signal output.
TTL output valid signal is low. (When the output low signal is on, it can be directly connected micro-controller or relay module.)
Analog output voltage: the higher concentration, the higher voltage.
Four screw holes, easy positioning.
Long life and stability, quick response and resume.
Input voltage: DC 5?0.2V
Power: 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively clean), the highest concentration voltage is about 4V.
Dimensions: 32(L) * 20(W) * 22(H) mm
AO ? analog signal output
MQ-8 MQ8 Hydrogen Gas Sensor H2 Gas Detection Sensor Module Sensor for Arduino
Main chip: LM393 gas sensor, MQ-8
Working voltage: DC5V
1. With signal output instructions.
2. Dual signal output (TTL level output and analog output)
3. TTL signal output valid for low level. (When the low output electric signal lights up in 4. Normal times, SCM can be directly picked up)
5. Analog 0 ~ 5v voltage, the higher the concentration, the higher the voltage.
6. High sensitivity to hydrogen
7. Can be resistant to ethanol vapor, LPG (petroleum), smoke interference
8. Has a long service life and reliable stability
9. Quick Response Recovery Features
MQ-7 carbon monoxide gas detection sensor module
Test gas: carbon monoxide
Concentration detection: 10-1000ppmCO
Loop voltage: 10 V DC
HEATER Voltage: 5V ? 0.2V ACorDC (high), 1.5V ? 0.1V ACorDC (low)
Load resistance: adjustable
Heating resistance: 31 ? 3 (interior temperature)
Heat dissipation: 350mW
Surface resistance of sensitive part: 2K-20K
Sensitivity: Rs (in air) / Rs (100 ppmCO) 5
Concentration gradient: 0.6
Temperature, humidity: 20 ? 2.65% ? 5% RH
The standard test circuit: Vc: 5v ? 0.1v Vh (high): 5v ? 0.1v Vh (low): 1.5v ? 0.1v
Condition: new
Color is shown as pictures
Please note that due to lighting effects, Monitor Brightness / Contrast settings ect, there
might be some slight differences in color tone of pictures and actual item!
MAX30100 Pulse Oximeter Heart Rate Sensor Module Compatible for Arduino
1.8V ? 5.5V is its operating voltages.
The heart sensor module brand is MAX30100.
The Digital is its Output type.
the working principle of this sensor is Biosensor.
this is a pressure-sensitive and force-sensitive sensor.
The polymer is its material texture.
I2C is Its interface type.
18.8 x 14.4 3 mm is the dimensions of the Heart sensor module.
Heart Sensor weight is 1.2g.
KY-039 5V Finger Detection Heartbeat Sensor Module Detector For Arduino
1.This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger,
a red LED flashes with each pulse
.Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other
side of the finger, phototransistor used to obtain the flux emitted, when the blood pressure pulse by the
finger when the resistance of the phototransistor will be slight changed.
2.Chosing a very high resistance resistor R1, because most of the light through the finger is absorbed,it is
desirable phototransistor sensitive enough.
Resistance can be selected by experiment to get the best results.The most important is to keep the shield
stray light into the phototransistor.
For home lighting that is particularly important because the lights at home mostly based 50HZ or 60HZ
fluctuate, so faint heartbeat will add considerable noise.
DC 12V Automatic Infrared PIR Motion Sensor Switch for LED Light (Black)
Detection range: 180degree
Operating voltage: DC12V
Detection distance: 15m (24 Degrees Celsius)
Delay Time: 15 seconds to 7 minutes
Installation height: 1.8m-2.5m
Color: Black
Material: ABS
Installation: open type, (hole 16mm) installation, adjusting for the next button.
Size: approx. 1.85 x 0.3cm/ 0.73" x 0.12"
HALL EFFECT SENSOR 44E Hall Sensor
Supply Voltage: 4.5-28V; Output Current: 25mA
3.5V to 24V DC operation voltage
Low current consumption
Temperature compensation
Wide operating voltage range
Open-Collector pre-driver
50mA maximum sinking output current
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