Recently somebody has asked me where the log files are stored. This question is more interesting then it seems. We are using the freely programmable controller UVR16x2 (and its predecessor) UVR1611) … .. and their Control and Monitoring Interface – CMI:The CMI is a data logger and runs a web server. It logs data from […]Read More Where Are the Files? [Winsol – UVR16x2]
The Data Kraken wants to grow new tentacles. I am playing with the CMI – Control and Monitoring Interface – the logger / ‘ethernet gateway’ connected to our control units (UVR1611, UVR16x2) via CAN bus. The CMI has become a little Data Kraken itself: Inputs and outputs can be created for CAN bus and Modbus, […]Read More Logging Fun with UVR16x2: Photovoltaic Generator – Modbus – CAN Bus
To my surprise, the most clicked post ever on this blog is this: Network Sniffing for Everyone: Getting to Know Your Things (As in Internet of Things) … a step-by-step guide to sniff the network traffic of your ‘things’ contacting their mothership, plus a brief introduction to networking. I wanted to show how you can […]Read More Give the ‘Thing’ a Subnet of Its Own!
In the old times, measuring data manually sometimes meant braving the elements: Now, nearly all measurements are automated: In order to calculate the seasonal performance factor of the heat pump system we have still used the ‘official’ energy reading provided by the heat pump’s display. Can’t this be automated, too? Our Stiebel-Eltron WPF7 basic is […]Read More Hacking My Heat Pump – Part 1: CAN Bus Testing with UVR1611
Our PV generator and new metering setup is now operational for half a year; this is my next wall of figures. For the first time I am combining data from all our loggers (PV inverter, smart meter for consumption, and heat pump system’s monitoring), and I give a summary on our scrutinizing the building’s electrical […]Read More Half a Year of Solar Power and Smart Metering
I have noticed the impact of traversing clouds on solar power output: Immediately after a cloud has passed, power surges to a record value. This can be attributed to the focusing effect of the surrounding clouds and/or cooling of the panels. Comparing data for cloudless days in May and June, I noticed a degradation of […]Read More The Impact of Ambient Temperature on the Output Power of Solar Panels
I am not talking about humans. But TV-sets might threaten other devices in the smart home; this was a recent puzzle submitted by a blog reader. Two unrelated devices / services met on the user’s local computer network: IP-TV provided by a large German telco. a data logger for monitoring the heating system. This user […]Read More Watching TV Is Dangerous