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OSD3358-SM-RED
– User Guide
Rev. 1.0 9/19/2017
Octavo Systems LLC
Copyright 2017
3.13
Temperature sensor hub (U17)
A high accuracy 9 channel temperature sensor TMP468 (U17) (shown below) is connected to
I2C0 interface of the processor. 4 channels of the sensor are exposed using a 2x5 header P3
(shown below). 1 remote channel is utilized to measure temperature on board and 1 channel
internal to the temperature sensor gives the temperature of the sensor itself. More information
on how to use it can be found in Section 5.3.
Figure 33: Temperature sensor on board
Temperature sensor TMP468 datasheet:
http://www.ti.com/lit/ds/symlink/tmp468.pdf
3.14
Pressure sensor (U22)
A Piezo-resistive pressure sensor BMP280 (U22) (shown below) is connected to the processor
through I2C0 interface. The pressure sensor can deliver high precision pressure measurements
that aid in altitude measurements. More information on this device and how to use it can be
found in Section 5.3.
Figure 34: Pressure sensor on board
Pressure sensor BMP280 datasheet:
bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf
