Data format 4 (URL)

Lifecycle: Obsolete

Related Ruuvi Devices: RuuviTag, up to B3 hardware (superceded in 2018)

The data is packed in Eddystone URL with a base of https://ruu.vi/# and 9 URL-safe base64 characters. Example URL is https://ruu.vi/#BFwaAMjlQ. This is decoded to 0x045c1a00c8e5

Offset	Allowed values	Description
0	4	Data format definition (4 = current sensor readings)
1	0 ... 200	Humidity (one lsb is 0.5%, e.g. 128 is 64%)
2	-127 ... 127, signed	Temperature (MSB is sign, next 7 bits are decimal value)
3	0 ... 0	Temperature (fraction, 1/100.). Not used, reads always as 0.
4 - 5	0 ... 65535	Pressure (Most Significant Byte first, value - 50kPa). Rounded to 1 hPa accuracy.
6	0..255	Random id of tag, only present in format 4. NOTE! because of the URL limitation, only 6 most significant bits will be readable.

Data field descriptions

Temperature

Values supported: -127.99 °C to +127.99 °C in 0.01 °C increments.

Example

Value	Measurement
0x0000	0 °C
0x8145	-1.69 °C
0x0145	+1.69 °C

Humidity

Values supported: 0.0 % to 100 % in 0.5 % increments.

Example

Value	Measurement
000	0%
128	64.0%
200	100.0%

Atmospheric Pressure

Values supported: 50000 Pa to 115536 Pa in 1 Pa increments.

Example

Value	Measurement
00000	50000 Pa
51325	101325 Pa (average sea-level pressure)
65536	115536 Pa

Tag ID (only on format 4)

Contains a single random base 64 character used to identify tag.