In Part 1 and 2 we made it possible to read out the DHT22 sensor and save the data in an InfluxDB database. But this is not so useful if you can’t visualise the data. In this part we will install Grafana on the RPi and visualise the data in the browser.Continue reading “Temperature monitor using DHT22 + Grafana + InfluxDB (and a PI) – Part 3”
In this part we will first install InfluxDB and use a simple cronjob to save the data in InfluxDB.Continue reading “Temperature monitor using DHT22 + Grafana + InfluxDB (and a PI) – Part 2”
This projected started about 3 years ago as an Arduino project with a Raspberry PI pulling data from a DHT22 sensor and saving it in a csv-file and evolved over time to a DHT22 connected to a Raspberry PI writing data to an InfluxDB and visualising it with Grafana, both running on the RPi. To boost the cool factor, I also added a monochrome LCD display providing the current temperature, but in this part I will only cover the DHT22 Sensor together with Grafana and InfluxDB.Continue reading “Temperature monitor using DHT22 + Grafana + InfluxDB (and a PI) – Part 1”
The Microsoft Optical Mouse 200 is a simple and cheap mouse, perfect for offices, but sometimes they break quite fast due to a stupid design flaw. It’s not the first time that somebody brought in there “broken” mouse because the LED inside the mouse moved a little bit. I think about 10% of the mouse’s getting affected by this problem after a while. Fortunately a fix only takes a few minutes.
Continue reading “Quick fix Microsoft Optical Mouse 200”