User Guide

IoT into the Wild

9.3.4 Example – S2105 Soil Moisture, Temperature and EC Sensor

Soil Moisture, Temperature and EC Sensor measurement packet:

01 0610 5C5D0000 01 0710 48A30000 01 0C10 B4000000 DD0A

Part

Value

Raw Data

Description

Soil

Temperature

01 0610 5C5D0000

01 is the channel number.

0610 is 0x1006（little-endian byte order）,

which is the measurement ID for soil

temperature.

5C5D0000 is actually 0x00005D5C, whose

equivalent decimal value is 23900. Divide it by

1000, and you will get the actual

measurement value for soil temperature as

23.9℃.

Soil

Moisture

01 0710 48A30000

01 is the channel number.

0710 is 0x1007 (little-endian byte order),

which is the measurement ID for soil

moisture.

48A30000 is actually 0x0000B1BC, whose

equivalent decimal value is 45500. Divide it by

1000, and you will get the actual

measurement value for soil moisture as

45.5％RH.

Soil

Electrical

Conductivity

01 0C10 B4000000

01 is the channel number.

0C10 is 0x100C (little-endian byte order),

which is the measurement ID for soil EC.

B4000000 is actually 0x000000B4, whose

equivalent decimal value is 180. Divide it by

1000, and you will get the actual

measurement value for soil EC as 0.18 dS/m.

CRC

DD0A

The CRC verification part.