Published February 5, 2018 © MIT

Atmospheric Pressure Measurement Using XinaBox ☒CHIPs

Create a project that measures the atmospheric pressure in under 20mins using XinaBox ☒CHIPs.

BeginnerFull instructions provided19 minutes621

Atmospheric Pressure Measurement Using XinaBox ☒CHIPs

Things used in this project

Hardware components

XinaBox SW01

☒CHIP Temperature, humidity and atmospheric pressure sensor based on the BME280 from Bosch.

XinaBox PU01

☒CHIP USB (Type A) Power Supply

XinaBox IP01

☒CHIP USB Programmer based on FT232R From FTDI Limited

XinaBox OD01

☒CHIP 128x64 Pixel OLED Display

5V USB Power Supply

Power Bank or similar product

XinaBox XC10

☒CHIP Bus Connectors

XinaBox CC01

☒CHIP version of Arduino Uno based on ATmega328P

Software apps and online services

Arduino IDE

Development environment for programming

Story

Introduction

I built this project to measure the atmospheric pressure in my location with the SW01 multi-functional sensor. It can measure temperature, atmospheric pressure, humidity and altitude. I've used an ATmega328P based ☒CHIP, the CC01, coupled with the sensor and an OD01 OLED display to complete the project.

Step 1: Download Necessary Files

You will need the following libraries and software:

xSW01 - Multi-functional sensor

xOD01 - OLED display library

Arduino IDE - Development environment

Click here to see how to install the libraries.

Once you've installed the Arduino IDE, open it up and select the "Arduino Pro or Pro Mini" as the board to upload your program to. Also make sure the ATmega328P (5V, 16MHz) processor is selected. See image below.

Select the Arduino Pro or Pro Mini and the ATmega328P (5V, 16Mhz) processor

Step 2: Assemble

Click the programmer ☒CHIP, IP01, and the ATmega328P based CC01 ☒CHIP together using XC10 bus connectors as shown below. In order to upload to the CC01 you'll need to place the switches in the 'A' and 'DCE' positions respectively.

IP01 and CC01 clicked together

Next, combine the sensor, SW01, and the OLED display, OD01, as shown below. Simply click them together. It's impossible to get it wrong.

Assembly in order to program

Step 3: Program

Insert the unit into the USB port on your computer. Download or copy and paste the code below into your Arduino IDE. Compile and upload the code to your board. Once uploaded your program should start running. You may read the comments within the code to grasp the syntax. The below image shows the atmospheric pressure once the upload has completed.

Observe the atmospheric pressure once you've uploaded

Step 4: External Power Source

Remove the unit from your computer. Disassemble the unit and reassemble it using PU01 instead of IP01. See below.

Final assembly not powered up

Now take your 5V USB portable power supply such as a power bank or similar and insert the new assembly into it. You can now observe the atmospheric pressure on the OLED display and measure the pressure in any location.

Complete project powered on

Conclusion

This project took under 10min to assemble and another 10min to program. The ☒CHIPs just click together making it very convenient.

Pressure_display.ino

#include <xCore.h>    // include core library for xCHIPS
#include <xSW01.h>    // include pressure sensor library
#include <xOD01.h>    // include OLED display library

xSW01 SW01;

float atm_pres;       // variable containing the pressure

void setup() {
  // put your setup code here, to run once:

  // initialize pressure variable to 0
  atm_pres = 0;

  // start i2c commnication
  Wire.begin();

  // start pressure sensor
  SW01.begin();

  // start OLED display
  OLED.begin();

  // clear display
  OD01.clear();

  // delay for normalization
  delay(2000);
}

void loop() {
  // put your main code here, to run repeatedly:

  // read pressure constantly
  SW01.poll();

  // retrieve pressure and store it
  atm_pres = SW01.getPressure();

  // print pressure on OLED display
  OD01.set1X();
  OD01.println(" ATMOSPHERIC PRESSURE");
  OD01.println("");
  OD01.set2X();
  OD01.println("");
  OD01.print(" ");
  OD01.println(atm_pres);

  delay(5000);    // update display every 5 seconds
}

Credits

Anon ymous

10 projects • 2 followers

Atmospheric Pressure Measurement Using XinaBox ☒CHIPs

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

Step 1: Download Necessary Files

Step 2: Assemble

Step 3: Program

Step 4: External Power Source

Conclusion

Code

Pressure_display.ino

Credits

Anon ymous

Comments

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Atmospheric Pressure Measurement Using XinaBox ☒CHIPs

Atmospheric Pressure Measurement Using XinaBox ☒CHIPs

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

Step 1: Download Necessary Files

Step 2: Assemble

Step 3: Program

Step 4: External Power Source

Conclusion

Code

Pressure_display.ino

Credits

Anon ymous

Comments

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