Home Assistant & whole-home power monitoring

Home Assistant & whole-home power monitoring

I recently purchased an Eastron SDM630 power meter and a Modbus TCP Gateway. This is a smart meter, which is installed behind my power company’s meter (since this can’t be changed or touched).  The meter itself is about 130€ and can be found on Amazon. I opted for the Ebay one linked above, since it… Continue Reading Home Assistant & whole-home power monitoring

Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 3

Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 3

This is the third part in my series of scraping data from the local police department, to gather crime statistics over time. Part 1 covers the collection of the images Part 2 covers the finding of the pins on the image Part 3 (This part) will cover determining where the pins are geographically located Part… Continue Reading Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 3

Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 2

Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 2

This is part two in my quest to determine the long-term crime statistics, in the city where I intend to buy a house. Click here for part one, where I collect the images weekly from the police’s site. In this step, I’ll pick the images out of the S3 bucket, and attempt to find all the… Continue Reading Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 2

Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 1

Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 1

I want to buy a house in a nice neighbourhood. My local police department provides statistics, but they only offer a static image with the weekly break-ins superimposed on a map. I contacted them to see if they could provide the raw data used to produce their map. They said that this is not something… Continue Reading Using Python, OpenCV and AWS Lambda to gather crime statistics – Part 1

Home Automation Smart Node

Home Automation Smart Node

A central actor in my home automation system is a Smart Node. These small nodes can: Detect motion Sense temperature & humidity Indicate status with an RGB LED IR Receiver (not yet implemented in software) Parts List To build the Smart Node, you will need the following Wemos D1 Mini, or NodeMCU (Any ESP8266-based breakout… Continue Reading Home Automation Smart Node

Faking Syslog Messages

Faking Syslog Messages

A few years ago I wrote a handy little tool to solve a simple problem: test automated ticketing & alerting based on syslog messages. The problem was presented to me while working for a large telecommunications provider who had outsourced their fault monitoring to an off-shore consulting company. This particular company had a habit of… Continue Reading Faking Syslog Messages