https://github.com/ekspla/D6F-PH

A micropython module for differential pressure sensor, D6F-PH (OMRON).
https://github.com/ekspla/D6F-PH

air-speed airspeed d6f-ph differential-pressure-sensor flow-sensor i2c micropython omron pressure-sensor sensor

Last synced: 2 months ago
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A micropython module for differential pressure sensor, D6F-PH (OMRON).

• Host: GitHub
• URL: https://github.com/ekspla/D6F-PH
• Owner: ekspla
• License: mit
• Created: 2023-04-18T23:16:25.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-04T01:30:29.000Z (9 months ago)
• Last Synced: 2024-01-31T02:45:31.322Z (5 months ago)
• Topics: air-speed, airspeed, d6f-ph, differential-pressure-sensor, flow-sensor, i2c, micropython, omron, pressure-sensor, sensor
• Language: Python
• Homepage:
• Size: 16.6 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• awesome-micropython - D6F-PH - MicroPython module for differential pressure sensor, D6F-PH (OMRON). (Libraries / Sensors)

README

        
# A micropython module for differential pressure sensor, D6F-PH (OMRON).

 I2C driver for D6F-PH pressure sensor (OMRON)

This code was tested with Micropython 1.19.1 - 1.20.0 on STM32F4.

https://github.com/ekspla/D6F-PH

## How to use

**pressure_range** argument ('0505', '0025', '5050') is necessary for the pressure transfer function (defaults to D6F-PH5050), e.g. ```pressure_range='0505'```

 w/o crc check

```Python

>>> from machine import I2C

>>> i2c = I2C(1, freq=400000)

>>> i2c.scan()

[108]

>>> hex(i2c.scan()[0])

'0x6c'

>>> 

>>> from d6f_ph import D6F_PH

>>> sensor = D6F_PH(i2c)

>>> sensor.read_raw()

(31033, 11086)

>>> sensor.read()

(0.04998779, 23.53571) # Pressure/Pa, Temperature/deg.C

>>>

```

 w/ crc check

```Python

>>> from machine import I2C

>>> i2c = I2C(1, freq=400000)

>>> 

>>> from d6f_ph import D6F_PH

>>> sensor = D6F_PH(i2c, en_crc=True)

>>> sensor.read()

(0.1499939, 23.72292)

>>>

```

## Note

Because this sensor utilizes a heater and a pair of thermopile, **it should be placed horizontally**.  Otherwise, you may observe unacceptable offset in measured pressures. 

 An offset (as a raw value; n) can be subtracted by using ```offset=n``` argument.  

## Application Example

This differential pressure sensor can be used as an air speed sensor by using a Pitot tube.  An [example](https://github.com/ekspla/Pitot_GPS_Sensor_Logger/) is shown. 

## License

MIT license.

## Reference

- MEMS Differential pressure Sensor User's Manual; [en-D6F-PH_users_manual.pdf, available from OMRON](https://omronfs.omron.com/en_US/ecb/products/pdf/en-D6F-PH_users_manual.pdf)

- GitHub OMRON(https://github.com/omron-devhub)