Micro:bit projects

 Microbit V1 weather station Update: Feb 2021: I've published the microbit V2 version using Bluetooth (BLE) Update 7th Jan 2021 : I've found an error in my DS3231 extension, so now it is feasible to use the microbit's Bluetooth (BLE) - which means the second microbit won't be necessary. And I fixed my Google Apps Script code for the chart! This project lets you make regular hourly readings of weather measurements, store them, and upload them to a phone or computer. The date and time of each reading are also recorded. You can use the readings to plot a chart, for example, to show how the weather changed over time. Here's a set of readings over 24 hours: These are the measurements I am using for this project: Barometric air pressure Temperature Humidity You can add more "instruments" - for example, I plan to add a home-made rain gauge, as described in this blog. The weather station can be self-contained, powered from a couple of batteries perhaps. You can...

  Microbit weather station mk2 This project builds on my experience ( here ) with a microbit. This version uses Bluetooth Low Energy (BLE) to upload readings to a device, such as a phone - this is a much more convenient upload method than USB. I have also had reliability problems with the DHT11 temperature and humidity sensor. It seems this isn't uncommon! So I am using the BME280 device to measure all 3 parameters: air pressure, temperature and humidity. This device has rather good accuracy: ±1.25℃ (temperature), ±3% (humidity), and ± 1 mbar (pressure). ❗At the moment the MakeCode extension for the BME280 only returns integers for the readings. The author is planning to update it so please check back here for blog updates! The weather station lets you make regular hourly readings of weather measurements, store them together with the date and time, and upload them to a device. You can use the readings to plot a chart, for example, to show how the weather changed over time. Here...