Here’s an interesting one for those of you (like me) who like sensors. Someone’s taken an Atlas Scientific dissolved oxygen sensor and breakout board and connected it up to a Raspberry Pi. The Pi then runs a piece of Python script and uses Atlas’ library to read the data and feeds it into Plotly to plot the graph. Read more here. It’s not a cheap project (the Atlas components are close to $200) but is interesting to see how the Plotly interface is done.