VTI SCP1000-D11 (I2C) on evaluation board
Overview
The VTI SCP1000-D11 (I2C) is an excellent barometer/pressure sensor. Unfortunately this device is no longer being produced.
| Module name |
sensors/baro_scp_i2c
|
| Sensor type
|
barometer, temperature
|
| Range (baro)
|
30kPa .. 120kPa
|
| Range (temp)
|
-30°C .. +85°C
|
| Resolution (baro)
|
0.25Pa
|
| Resolution (temp)
|
0.05°C
|
| Refresh rate
|
1.8Hz
|
| I2C address
|
0x22
|
Product data sheet
Hardware
The sensor directly interfaces to the 3.3V I2C port of the autopilots and is supplied by +3.3V.
Wiring
| Autopilot I2C pin |
Autopilot I2C |
VTI SCP1000 I2C
|
| 1
|
GND
|
GND
|
| 2
|
|
|
| 3
|
+3.3V
|
Vcc
|
| 4
|
SDA
|
SDA
|
| 5
|
SCL
|
SCL
|
Usage
To use it load the baro_scp_i2c module:
| File: conf/airframes/myplane.xml
|
<modules>
...
<load name="baro_scp_i2c.xml"/>
</modules>
|
Configuration
To see the sensors data in the log file set the SENSOR_SYNC_SEND in your airframe file. Every time new data is available it will be sent directly.
| File: conf/airframes/myplane.xml
|
<modules>
...
<load name="baro_scp_i2c.xml">
<define name="SENSOR_SYNC_SEND"/>
</load>
</modules>
|
Result message
There is no conversion needed so the raw data is output, the pressure is given in 1/100 of Pascal.
| File: conf/messages.xml
|
<message name="SCP_STATUS" id="88">
<field name="press" type="uint32" unit="Pa"/>
<field name="temp" type="int16" unit="100x_deg_celsius"/>
</message>
|
Sample log file lines
12.016 123 SCP_STATUS 10085150 2305
12.567 123 SCP_STATUS 10086450 2300
13.114 123 SCP_STATUS 10085600 2300
13.664 123 SCP_STATUS 10086125 2305
