CO2 Monitor

I’ve had a low cost carbon dioxide (CO2) sensor sitting on my desk for over a year! I thought why not get this thing recording, as I have already done a load of work sending data to MQTT feeds. The CO2 sensor I purchased was the MH-Z14A. The datasheet is available here. I did a … more

COVID Cases Monitor

I wanted to produce a small display for simple items of data streamed/taken from the internet. My initial plan was to look at environmental monitoring, but this was Feb 2020 and covid-19 hit the UK about this time. I saw that the UK government were making the cases data publicly available & so I set … more

Creating a Weather Display

Getting Weather Data Designing Logos for Display I wanted to figure out how to design my own logos and bitmap graphics for displaying on the E-Paper. I had tried out the logos above but wanted to create my own icons for this unit. I searched a bit and found this LCD Icon Converter program. I … more