MQ-8 Hydrogen Gas Sensor Module

The sensors can be integrated into a variety of instruments associated with a concentration of airborne particles to improve equipment, provide timely concentration, and have Exact data.
Present the laser that scatters products on airborne particles, at the same time at a specific angle collect scattered light, changing the intensity curve that scatters over time.
The microprocessor uses the algorithm based on the MIE theory to deduce the grain size contained in the air and the concentration of the particles per unit and quantity. Characteristic: - Power supply: 4.5-5.5 VDC
- Measurement range: 0.3-1.0ï¼ ›1.0-2.5ï¼› 2.5-10 µm (micrometer)
- Accuracy of count: 50%@>

Inductive Proximity Sensor PL-05N NPN Limit Switch is used for controlling machinery as part of a control system, as a safety interlock, or to count objects passing a point. Inductive proximity sensor PL-05N 5mm with NPN output features:
- Manufacturer: Fotek,
- Square Type,
- Sensing distance: 5mm,
- Operating voltage: 10 - 30 VDC,
- Response frequency: 800Hz,
- Output method: NPN, 150mA load,
- Hysteresis: <10% of sensing distance,
- Protection degree: IP67,
- Working temperature/Hum: -20ºC - +80ºC, 35% - 90% RH,
- Body dimension: 30.5x17.9x10.2mm (LxWxH),
- Mounting Method: Flush,
- Sensing Direction: Horizontal,
- Materia Housing: High-impact plastic,
- Screw hole: 3.2mm, Pitch: 10.5mm,

- Bootloader Pin Header Compatible 100% ARDUINO
- Pro Mini Atmega328P 5v 16Mhz
- Miniaturized compatible version of Arduino Pro Mini
- It has an Atmega328P chip running at 16Mhz with a factory-loaded bootloader. It does not include pins so we can only solder the pins that we need
Characteristic:
- ATmega328P 16MHz chip with external quartz crystal
- Auto-reset - micro switch
- Integrated 5V regulator
- FLASH 32kB memory
- SRAM 1kB memory
- EEPROM 1Kb memory
- Analog input A0-A7
- 8 PWM channels
- External interruption
- TWI / I2C, UART, SPI interfaces
- Power and status LEDs
- Dimensions: 18x33mm
- Weight: 30 grams
Useful links for Arduino />

Characteristic: - Supply voltage: 4.5V- 5.5V
- Consumption: 30 mA typical
- Analog output
- Range: 10cm to 80cm
- Dimensions: 29x12mm
- Cable length: 20cm GP2Y0A21YK0F Sharp Analog IR distance sensor 10CM-80CM Arduino

The Carbon Monoxide sensor is a low-power digital gas sensor which has a CCS811 sensor and an 8-bit microcontroller, contains an analog-digital converter so that it can detect indoor air quality which can detect monoxide carbon (CO) and a wide range of volatile organic compounds (VOCs). It is a sensor designed to monitor air quality inside personal devices such as mobile devices and smart watches, with low power consumption that can be used with battery

The DS18B20 is a digital temperature sensor from Dallas Semi Conductors, used to measure ambient temperature or to carry out tests. It supports multipoint readings of the mesh networking type, being able to be deployed in three lines, in order to achieve these readings, it has a built-in pull-up resistance. Dallas Temperature Sensor Module DS18B20 features:
- Operating voltage: 3 - 5.5 VDC
- Measurement operating temperature: -55 ° C - 125 ° C
- Output current: 5 μA
- Accuracy of ± 0.5 ° C between -10 ° C and + 85 ° C
- Storage temperature: -55 ° C - + 125 ° C
- 100% new and high quality
- Module DS18B20 temperature measurement sensor
- The DS18B20 sensor has a pull-up resistor
- Power indicator LED on the module

This module adapted for the arduino is a unipolar Ic Hall effect magnetic sensor. The Hall effect is when a current passes through a bar of semiconductor (or conductive) material, and if an induction magnetic field B is applied perpendicular to the direction of current flow, a voltage, called Hall voltage, proportional to the magnetic field, and the current appears on the faces sides of the bar. This tension is proportional to the displacement speed of the charge carriers, which is considerably higher in semiconductor materials than in metal conductors. Hall Effect Sensor Module KY-003 with SH3144E TO-92 features:
- 3-pin connector: 1- GND
2- VCC
3- Voltage is recovered depending on the magnetic effect
- Supply voltage: 5VDC
- Output current: 40mA

  Mini voltmeter with LED display 7 red 3-digit segments.
Simply connect the positive and the negative to turn it on and measure the voltage.   Mini voltmeter with LED display 7 blue segments 3 digits 3.5-30 VDC - 1% features:
  - Operating voltages (measurement): 3.5 - 30 VDC,
- Color of the LED segments: blue
- Update speed: approx. 500ms,
- Accuracy of the measurement: ± 1%,
- No need power supply: it is powered with the measured voltage,
- Cable length included: 10cm,
- Size: 30x12x9mm.