Arduino-based mini environment data logger using a Wio Terminal

[Issue 54] In this month's issue, we build three projects using the handy Wio Terminal from Seeed Studio.

For our final project shown here, we build a multi-channel data logger that can be switched between various data sources to log them to an SD card for future analysis. This could be imported into an application like Microsoft Excel later for graphing.

It’ll also display a time graph on the Wio Terminal.

We’re sprinkling in some juicy data to analyse by using a DHT11 weather sensor and a four-channel gas sensor!