The Fire Denyer is a controller, the size of a standard light switch that is connected to smoke detectors and a control relay mounted in the electrical switchboard that cuts off power to the stove in the kitchen. The purpose is to shut off cooking when smoke is detected. Usually, […]
Capsicums grow well in the greenhouse but are quickly infested with aphids which are impossible to overcome without chemicals. Outside they don’t grow as well but nature keeps the aphids under control. We planted a few capsicum seeds in pots indoors, before mid winter, not the best time. They sprouted […]
To remote control a 50 watt LED flood light over a work area. Using a Sonoff Basic module connected in-line with the 230V mains power lead. Before wiring the Basic was flashed with Tasmota. When connected Tasmota is configured and connect to Home Assistant. Wiring is a bit tricky as […]
Why make a Light Switch I needed a Wifi connected light switch for the workshop, something a bit more robust than the usual indoor white plastic type. It had to run Tasmota – none of that Tuya stuff. So I built one based on some metal push buttons, supposedly waterproof, […]
A small background project. I first looked at this for RC planes. Arduino compatible ATMega328 based module with on-board micro-SD socket. At the moment mostly just a working board in need of an improved sketch to make it more useful. Should be useful for some other SD logging applications. Features: […]
Update – March 2023 The Orange Pi EMMc flash died, probably because I was writing data to InfluxDB every 30-60 seconds for 3 years without compacting it at all. I suspected this would happen but didn’t get around to doing something about it before it failed. I’ve looked at the […]
The old analog cctv system have been updated to IP cameras and a dedicated NVR rather than a general PC and Zoneminder software. The mini-DVR has been modified to run on the 24V solar-battery system. Some more information Here.
NiMh Cells Seem To Be Fading Away We have used NiMh cells for years, but they are now harder to find and a lot more expensive. So we are switching a system battery from 8-cell NiMh to 3-cell 18650 cells with a BMS. We still need a stable and safer […]