YOSensi YO H2O, User Manual

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YO H2O User guide v1.2 page 26/26
Payload description
If you want to connect to your own server you have to decode the payload specific to each device. To
do this you need a payload decoder which can be downloaded from
Payload decoder . Extended
documentation of the protocol can be found at Payload description . An exemplary payload produced
by YO H2O is presented below with division into each measurement marked together with decoded
values whose interpretation is described in the Payload description document.
Example of YO H2O payload with description:
02:00:00:00:04:00:00:00:41:00:05:ff:fe:00:1e:00:74:08:00:01:0b:b8:0d:00:01:01:0e:10:00:00:21
Payload header First measurement (flood sensor state)
0x02 0x00 0x00 0x00 0x04 0x00 0x00 0x00
ver = 2 cnt = 0 pct [s] = 0
type = 1
prec = 0
md [s] = 0
addr_len = 0
meas_len = 1
val = 0
(0[-])
Second measurement (accelerometer angle)
0x41 0x00 0x05 0xFF 0xFE 0x00 0x1E 0x00 0x74
type = 16
prec = 1
md [s] = 0
addr_len = 0
meas_len = 6
val= -2
(-0,2[°])
val = 30
(3,0 [°])
val = 116
(11,6[°C])
Third measurement (battery voltage)
0x08 0x00 0x01 0x0B 0xB8
type = 2
prec = 0
md [s] = 0
addr_len = 0
meas_len = 2
val = 3000
(3000 [mV])
Fourth measurement (temperature)
0x0D 0x00 0x01 0x01 0x0E
type = 3
prec = 1
md [s] = 0
addr_len = 0
meas_len = 2
val = 270
(27[°C])
Fifth measurement (relative humidity)
0x10 0x00 0x00 0x21
type = 4
prec = 0
md [s] = 0
addr_len = 0
meas_len = 1
val = 33
(33[%])
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