During the holiday break, I embarked on a fun and educational project—building a custom digital barometer to complement my existing weather station. The goal was to create an elegant, functional device that combines modern technology with classic design elements. Here’s a quick rundown of my journey and the results!
The Challenge
I wanted a barometer that wasn’t just a sleek display but also integrated seamlessly with my openHAB setup. After researching available options, I decided to build one from scratch. The project involved combining a Raspberry Pi, a BME280 sensor, stepper motors, and some DIY craftsmanship to create a polished final product.
The Build
Here’s what I used:
- Raspberry Pi 3B+
- BME280 I2C Pressure Sensor
- Two Adafruit Stepper Motors and Motor HAT
- Metal Power Button with LED Ring
- Custom Enclosure and Face Plate
The process was a mix of coding, hardware assembly, and woodworking. I spent several weeks perfecting the enclosure and face plate to ensure everything aligned perfectly. The result? A barometer that looks great and functions flawlessly!
The Outcome
After overcoming some initial hurdles with threading in Python and ensuring the stepper motors worked smoothly, the barometer now runs continuously. It updates the pressure readings every minute and provides accurate, real-time data. Plus, it integrates beautifully with my openHAB setup, allowing me to view the data alongside my other weather sensors.
Lessons Learned
- Project Planning is Key: Breaking the project into smaller tasks made it manageable.
- Embrace Learning Curves: From Python scripting to woodworking, every challenge was an opportunity to grow.
- Attention to Detail Pays Off: The time spent on the enclosure and alignment made the final product look professional.
This project was a fantastic way to dive deeper into openHAB, Linux, and hardware integration. It also gave me a sense of accomplishment to create something both functional and aesthetically pleasing.
If anyone else is looking for a meaningful and educational project, I highly recommend giving something like this a try! Happy building! 
