This is the MS5803-14BA Pressure Sensor Breakout, a high resolution pressure sensor with both an I2C and SPI interface. This MEMS pressure sensor measures the absolute pressure of the fluid around it which includes air, water, and anything else that acts like a viscous fluid. Depending on how you interpret the data, you can determine altitude, water depth, or any other tasks that require an accurate pressure reading. What makes the MS5803-14BA unique is the the gel membrane and antimagnetic stainless steel cap that protects against 30 bar water pressure.
We have broken out all the pins you need including GND and 3.3V for power, SDA/SDI and SCL/SCLK for an I2C interface and SD0, AD/CS, and PS for a SPI interface. The MS5803-14BA Breakout offers a resolution range of 1 / 0.6 / 0.4 / 0.3 / 0.2 mbar. Be aware that to switch between I2C and SPI interfaces a little bit of soldering between solder pads will be required, check the hookup guide below for more information.
Heads up! While the IC is capable of outputting data via I2C and SPI, the Arduino Library and example was only written to output via I2C! You'll need to modify the jumpers on the board for SPI mode by removing solder from the pull-up resistors jumper pads and close the other two jumpers. Additionally, you will need to write a library to communicate with the MS5803 in SPI mode if you plan on using this with Arduino.
The ESP8266 has the same issue as the RFDuino here. It appears that for the ESP8266 (as with the RFDuino), Wire.begin() must be called after Serial.begin(), not before.
Remove solder from the PU solder jumper to disable the resistors, and close both the other two jumpers on the board, the I2C/SPI jumper and the 0×76/0×77 jumper.
This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.
Skill Level: Rookie - The number of pins increases, and you will have to determine polarity of components and some of the components might be a bit trickier or close together. You might need solder wick or flux.
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If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.
Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Based on 7 ratings:
2 of 2 found this helpful:
I used it in SPI mode. I'd give 5 stars except for the fact that I had to do a little intelligent guessing to figure out how to go from I2C configuration to SPI. The description said that some other doc would say how to do it, but it didn't. It wasn't hard to guess, but that document should be fixed to give the info or else the part description changed.
Also I wish you guys sold a watertight case with a gland and o-ring to match the collar on the sensor itself.
1 of 1 found this helpful:
With the existing libraries, this was a 20 minute job to get it reading properly on my Arduino. I needed it to read pressure from a tube, so I hot-glued the bejeezus out of it and that did the trick. For that to work, I had to also seal off all the holes on the bottom of the board, basically encapsulating it into a brick of hot glue. Even so, it works great.
I had this sensor running in just one hour, it's perfect for hobbyists looking for a home-made project. There are online examples on how to use it.
Does exactly what it says on the tin; no fuss, no muss. What more could you ask for?
An SPI library would have been nice as well as confirmation that the one solder bridge to solder was the right one, but it's really not at all hard to work out.
Used the sensor to build a machine that dilutes gas samples stored in a glass vial. The sensor is very accurate. After calibration the machine is able to dilute gas samples with an error less than 0.5%. Very happy with this breakout board!
Was very happy the Arduino support code built just find and ran perfectly on an ESP32.