I built a really cool little temperature and air quality sensor that reports data to particle.io events and from there into influxdb cloud. With Free Dashboards!! Yes I mean free as free can get. Particle.io, free (to 100 devices). InfluxDB cloud, free (to (x) amount of stats). We’re not talking about a lot of stats here, but after many hours of research for a free dashboard solution this was the absolute best!
I wanted to protect my home on wheels with a nice alarm system that could page my cell phone when an intruder was detected. After much research and calling various car alarm installers in my area I came to the conclusion that it wasn’t worth the expense, the risk to my van’s wiring, and voided warranty. The commodity car alarm systems like Viper seem stuck in the dark ages and they don’t have a wide range of detection methods.