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The WeMos D1 is a WiFi-based ESP8266 board with an Arduino layout and a 3
panes of glass
D12 (MISO) & D13 (SCK) These pins support SPI communication A4 (SDA) & A5 (SCL) Support I2C (TWI) communication using the Wire library AREF Reference voltage for the analog inputs Reset Bring this line LOW to reset the microcontroller Features
These are Carbon Film Resistor with a value of 510 ohm 1/8W and tolerance of ±5%
MQ-4 Methane Gas Sensor 8 Pin JST XH Relimate Connector The WeMos D1 is aThis MQ 4 High Sensitivity Gas Methane (CNG) Detector Sensor Module detects the presence of Compressed Natural Gas (CNG), methane (CH4), and other gases in the air. It has an analog output that corresponds to the concentration of gases in the air and a simple digital output. Specification Model MQ 4 Type Gas Sensor No. of Pin 06 Input Voltage 5V DC Input Current 150mA Diameter 19. 5mm Height 14. 5mm Make Made in India
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