The sensor has a sensitive filament made of SnO2. In the presence of clean air, this filament tends to have lower electrical conductivity. When a combustible gas such as LPG is introduced, the filament’s conductivity rises, and the amount of change in it’s conductance/resistance can be used to indicate the equivalent gas concentration. This effect tends to be particularly pronounced at higher temperatures, and resistive heating element is present as well. SnO2 is particularly sensitive to Methane, Butane and Propane, but is also sensitive to other combustible gases as well.

Gas Sensor(MQ5) module is useful for gas leakage detection (in home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by using the potentiometer.

MS4525DO Digital Airspeed Sensor E-950 Sensor Model Number MS4525DO-DS5AI001DP Measurement range 1 psi (roughly up to 100 m/s or 360 km/h or 223 mp/h) Communication I2C I2C Address 0x28H  

MSP-EXP430G2ET - Launchpad Value Line MSP430 Development Kit E-981 The MSP-EXP430G2 LaunchPad comes with MSP430 device, with up to 16kB Flash, 512B RAM, 16MHz CPU speed and integrated peripherals such as 8 channel 10-bit ADC, timers, serial communication (UART, I2C and SPI).