I’d previously shared on my blog the home made monitoring application I’d built to aggregate pv, meter and weather data – see: https://blog.v-s-f.co.uk/2014/03/home-monitoring-home-made-overview/. Over the last few months I re-wrote the app to not only output the data to PVOutput every minute, but store that same data into an HSQLDB …
My hot water display decided to print the HTTP response header…
We use tomcat a lot at work and sometimes you will deploy the same application tens of times in a single day. Before deploying a new version of the application I’m about to work on, I like to: Clean out the logs directory – much handier to see what’s going …
Back in March 2014, I posted about monitoring the hot water tank temperature and when the immersion was switched on by the solar surplus https://blog.v-s-f.co.uk/2014/03/home-monitoring-home-made-results/. We have now decided to display the last temperature reading on an LCD next to the shower room and boiler control panel. The previous software …
When creating a flow in Mule recently, I hit an issue that kept me scratching my head for a number of hours, so thought I’d share it… (or in pictorial format) I’ve created a simple flow which receives a request on a servlet endpoint and then adds a variable depending …
And finally the results of all work! There isn’t any change on the first graph which shows generation and import (yes, it should be consumption, but I have yet to work out the right values for the addstatus service). The next graph is the result of all the hard work. …
There are only 6 java classes, 1 properties file and the flow (XML) file making up the Mule application. Some of them can be better written and should be unit tested, but they work and do the job :-)) ConsumptionData.java DefaultReadingData.java HotWaterData.java ConsumptionInputDataTransformer.java ExtraDataOutputTransformer.java HotWaterInputDataTransformer.java pvoutputaggregator.properties pvoutputaggregator.mflow Next Part Part …
Aggregation of the data before uploading to PVOutput Why do we need to aggregate the data? The data collected by the meter reading Arduino will be sent to PVOutput on the addstatus service using the standard parameters. The hot water Arduino will be sending the data on the extended parameters …
Reading when the hot water is heated by solar from the Wattson plug Since the Wattson plug and the hot water tank are in close proximity, we can reuse the Arduino that reads the temperate to determine when the Wattson plug is on and heating the water. Another light voltage …
Reading the temperature of the hot water tank This one is not as easy as the export meter as the meter cupboard and the hot water tank are not in the same area as one another, so we had to purchase another Arduino. This time instead of a wifi shield …
Reading the export meter Reading the export meter is relatively easy as the Arduino in the meter cupboard can be extended to have another light voltage converter to read the export meter. So we purchased another part from CPC (for those interested in replicating this, you can use one of …
We have been working towards monitoring more and more items within the house to see the benefits of the solar array. Last time I posted an article about the meter reader which uses an Arduino and a light voltage converter to read the impulses from the import meter (a huge …
The is a partial example of a spring 3.2 and hibernate 4 project repository base layer. It doesn’t necessarily compile or even do anything, but it’s an example… aCtx-repository.xml aCtx-dao.xml aCtx-base.xml BaseDao.java AccountDaoImpl.java Account.java
I’m creating a little project at home to record some data and I’m using Spring & Hibernate. This problem took me a couple of hours to work out, so I thought I’d post my solution as it wasn’t listed in the 20 or so pages I visited to fix the …
Mmm... cookies