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If your computer system is Windows7/8 instead of Windows 10, the device
can ' t be paired in Google Chrome, as a result, the digital and analog
signals can't be read.
Here, we need CoolTerm software to read data.
Open CoolTerm, click Options to select SerialPort. Set COM port and
115200 baud
rate(the baud rate of USB serial communication of micro:bit
V2 is 115200 through the
test). Click"OK"and"Connect".
Enable fire lighter and make it close to the gas sensor , the serial monitor
will print 0; however, if you remove the fire lighter, number 1 will be
output.
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