Notes on software, infrastructure, hardware experiments, mistakes and the process of figuring out how systems work.https://mups.co.zw/en-gbhttps://mups.co.zw/blog/esp32-can-bus-bmw/https://mups.co.zw/blog/esp32-can-bus-bmw/A practical record of connecting to the CAN bus, capturing traffic, distinguishing noise from useful signals and working out what the car is saying.Fri, 10 Jul 2026 00:00:00 GMThttps://mups.co.zw/blog/zenhost-network-namespaces/https://mups.co.zw/blog/zenhost-network-namespaces/A ZenHost engineering post about assuming applications could simply own the ports they requested, and what happened once multiple tenants entered the picture.Sun, 12 Jul 2026 00:00:00 GMThttps://mups.co.zw/blog/esp32-rs485-solar-inverter/https://mups.co.zw/blog/esp32-rs485-solar-inverter/Using an ESP32 and MAX485 module to bring battery state, usage and alarms into Home Assistant.Wed, 08 Jul 2026 00:00:00 GMT