RS232 flow-control & handshaking – Psion MC400 retro communications

Connecting my retro-laptop to the internet via 2 x RS232 serial connections to a Raspberry Pi… and defeated (for now) by lack of hardware flow-control signals 😦

Grafana, Influxdb & telegraf based home temperature monitoring with Raspberry Pi and the humble DS18B20

Creating a temperature monitoring dashboard in Grafana to display temps from sensors all around the house. Running on Raspberry Pis and using the venerable DS18B20 one-wire sensor.