Arduino software library is available here.
The schematic and board layout are designed in EagleCAD.
The Bar30 pressure sensor is a high-pressure, high-resolution pressure sensor that is sealed from the water and ready to install in a watertight enclosure. With 0.2 bar resolution, it has an amazing depth measurement resolution of 2mm in the water column!
The sensor is the Measurement Specialties MS5837-30BA, which can measure up to 30 bar (300m depth) and communicates over I2C. It comes standard with a 4-pin DF13 connector and compatible with most DroneCode compatible boards including the APM2.6, PixHawk, and others.
- Measure up to 300m water depth with 2mm resolution
- Reverse polarity protection
- Standard DF13 connector for connection to DroneCode boards such as APM, PixHawk, Navio2, etc.
- Sealed in a bulkhead penetrator for easy installation into any 10mm hole
The Bar30 sensor is compatible with any device with 3.3V I2C logic. When using with a 5V device, such as an Arduino Uno, it is necessary to use a logic level converter.
##Configuration
--
##Ratings
Electrical:
| Item | Condition | Value |
|---|---|---|
| Supply Voltage | - | 2.5-5.5 volts |
| I2C Logic Voltage | - | 2.5-3.6 volts |
| Peak Current | - | 1.25 mA |
Pressure:
| Item | Condition | Value |
|---|---|---|
| Maximum Mechanical Pressure | - | 50 bar |
| Operating Pressure | - | 0-30 bar [up to 1000 ft (300 m) in water] |
| Absolute Accuracy (0-40°C) | From 0-6 bar | +/- 50 mbar (51 cm in freshwater) |
| From 0-20 bar | +/- 100 mbar (102 cm in freshwater) | |
| From 0-30 bar | +/- 200 mbar (204 cm in freshwater) | |
| Absolute Accuracy (-25-85°C) | From 0-6 bar | +/- 100 mbar (102 cm in freshwater) |
| From 0-20 bar | +/- 200 mbar (204 cm in freshwater) | |
| From 0-30 bar | +/- 400 mbar (408 cm in freshwater) |
Temperature:
| Item | Condition | Value |
|---|---|---|
| Operating Temperature | - | -20 to +85°C |
| Storage Temperature | - | -40 to +85°C |
| Absolute Accuracy | From 0-10 bar at 0-60°C | +/- 1.5°C |
| From 0-30 bar at -20-85°C | +/- 4.0°C |
Physical:
| Item | Value |
|---|---|
| Wire Colors | Green - I2C Clock (SCL) |
| White - I2C Data (SDA) | |
| Red - Positive (2.5-5.5V) | |
| Black - Ground | |
| Overall Length | 37 mm |
| Thread Size | M10x1.5 20 mm threaded |
| Recommended Through Hole Size | 10-11 mm |
| Wrench Flats | 16 mm |
##Example Setups
Examples TBD
##Physical Specifications
- Bulkhead hole size: 10-10.5mm
- Wire length: 11" (280mm)
##License
The Bar30 Pressure Sensor Hardware Design is released under the MIT License.
##Revision History
0.0 - Under development
0.1 - First production version (marked with rev4)
0.2 - Minor layout changes (marked with rev5)