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16- THE NOVAFIT PM10 25 SENSOR

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The Novafit SDS011 particulate sensor is an a very affordable sensor for detecting particulate pollution. It is capable of detecting both PM2.5 and PM10 with a relative error margin of +/- 10µg/m3.

It can output data via it’s serial port.

Data is sent at 9600 baud, with 8 data bits, no parity bit, and 1 stop bit. 10 bytes are sent at a time.

Byte Name Content

0 Message Header AA

1 Commander No C0

2 DATA 1 PM2.5 Low byte

3 DATA 2 PM2.5 High byte

4 DATA 3 PM10 Low byte

5 DATA 4 PM10 High byte

6 DATA 5 ID byte 1

7 DATA 6 ID byte 2

8 Check-sum DATA 1+DATA 2+..+DATA 6

9 Message tail AB

PM2.5 (μg /m3) = ((PM2.5 High byte *256) + PM2.5 low byte)/10 PM10 (μg /m3) = ((PM10 high byte*256) + PM10 low byte)/10 ESEMPIO: AA C0 55 7A FA FD C6 AB AA C0 5D 00 74 00 FA FD C8 AB AA C0 5D --> 93 00 --> 0 74 --> 115 00 --> 0 FA FD C8 AB PM 2.5 --> 0* 255 + 93 / 10 = 8.3 µg/m³ PM 10 --> 0* 255 + 115 / 10 = 11.5 µg/m³

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