1/27/2021, 4:10 AM
This new technique to compress the time series data collected by my home automation system seems to be working really well.
Ian Mercer
3/15/2021, 3:22 PM
Digital Twin are an online representation of a real world object, a copy of its properties in the digital world and a way to send updated and commands to it. In effect I've been making them for years but now they have a trendy name.
Ian Mercer
2/20/2021, 1:28 AM
Why automated learning is hard for a smart home. The perils of over-fitting, under-fitting and how the general unpredictable nature of life makes it hard to build a system that learns your behavior.
Ian Mercer
7/15/2021, 3:47 PM
One way to reduce the volume of sensor data is to remove redundant points. In a system with timestamped data recorded on an irregular interval we can achieve this by removing co-linear points.
Ian Mercer
4/23/2020, 8:42 PM
Home automation systems need to respond to events in the real world. Sometimes it's an analog value, sometimes it's binary, rarely is it clean and not susceptible to problems. Let's discuss some of the ways to convert these inputs into actions.
Ian Mercer
3/22/2020, 9:48 PM
Another super useful function for handling sensor data and converting to probabilities is the logistic function 1/(1+e^-x). Using this you can easily map values onto a 0.0-1.0 probability range.
Ian Mercer
2/28/2020, 4:53 PM
In a home automation system we often want to convert a measurement into a probability. The ATAN curve is one of my favorite curves for this as it's easy to map overything onto a 0.0-1.0 range.
Ian Mercer
2/23/2020, 4:34 AM
Several years ago we did a major remodel. I did all of the finish electrical myself and supervised all of the rough-in electrical. I also put in all of the electrical system and water in our barn. I have opinions ...
Ian Mercer
2/23/2020, 4:34 AM
I'm testing a T-Mobile Home Internet device as a backup to XFinity and a way to offload half our monthly traffic to avoid the XFinity 1.2TB cap
Ian Mercer
1/31/2015, 3:26 PM
My notes on the iBeacon meetup in Seattle held in January 2015
Ian Mercer
11/5/2014, 7:57 AM
Building a Xamarin Forms application to control my home automation system
Ian Mercer
6/26/2014, 8:00 PM
Ian Mercer
5/8/2014, 11:23 PM
Ian Mercer
5/2/2014, 3:05 PM
Ian Mercer
2/13/2013, 8:43 AM
How to create a LINQ expression that logically ORs together a set of predicates
Ian Mercer
2/4/2013, 2:00 PM
A novel approach to adding history to variables in a programming language
Ian Mercer
7/11/2012, 2:28 PM
A hierarchical state machine for .NET
Ian Mercer
4/15/2012, 2:38 PM
A state machine for .NET that I've released on Nuget
Ian Mercer
3/26/2012, 4:14 AM
Connecting our dog into the home automation
Ian Mercer
1/7/2012, 4:31 PM
State machines are useful in many contexts but especially for home automation
Ian Mercer
9/21/2011, 12:30 AM
Ian Mercer
9/16/2011, 12:52 PM
Ian Mercer
9/10/2011, 3:30 PM
Ian Mercer
9/7/2011, 7:58 AM
Ian Mercer
8/24/2011, 3:53 AM
Ian Mercer
8/20/2011, 11:20 AM
Ian Mercer
6/7/2011, 3:53 AM
Ian Mercer
5/10/2011, 3:53 AM
Ian Mercer
5/9/2011, 10:55 AM
Ian Mercer
5/5/2011, 3:53 AM
Ian Mercer
3/22/2011, 12:49 PM
Ian Mercer
3/11/2011, 5:39 AM
Ian Mercer
2/6/2011, 3:53 AM
Ian Mercer
1/8/2011, 1:40 AM
Ian Mercer
11/26/2010, 3:53 AM
Ian Mercer
11/13/2010, 2:32 PM
Ian Mercer
10/24/2010, 1:09 AM
Help with this exception
Ian Mercer
9/2/2010, 2:29 AM
Ian Mercer
9/2/2010, 2:11 AM
Ian Mercer
7/31/2010, 3:38 AM
Ian Mercer
7/26/2010, 10:38 AM
Ian Mercer
7/20/2010, 8:22 AM
Ian Mercer
7/6/2010, 12:04 PM
Ian Mercer
6/6/2010, 5:08 AM
Ian Mercer
5/28/2010, 12:05 PM
Ian Mercer
5/28/2010, 10:03 AM
Ian Mercer
5/28/2010, 8:01 AM
Ian Mercer
5/22/2010, 1:06 PM
Ian Mercer
5/13/2010, 5:34 AM
Ian Mercer
5/12/2010, 6:28 AM
Ian Mercer
5/10/2010, 2:07 PM
Ian Mercer
4/28/2010, 12:44 AM
Ian Mercer
4/21/2010, 1:22 PM
Ian Mercer
4/16/2010, 1:09 AM
Ian Mercer
4/9/2010, 5:20 AM
Ian Mercer
3/23/2010, 6:28 AM
Ian Mercer
3/14/2010, 6:28 AM
Ian Mercer
3/11/2010, 6:28 AM
Ian Mercer
3/10/2010, 3:05 PM
Ian Mercer
3/9/2010, 6:28 AM
Ian Mercer
3/8/2010, 1:43 PM
Ian Mercer
3/4/2010, 8:13 AM
Ian Mercer
3/2/2010, 1:54 PM
Ian Mercer
3/2/2010, 6:28 AM
Ian Mercer
3/2/2010
Ian Mercer
3/1/2010, 3:05 PM
Ian Mercer
2/26/2010, 3:19 AM
Ian Mercer
2/10/2010, 6:03 AM
Ian Mercer
2/9/2010, 2:23 PM
Ian Mercer
2/7/2010, 8:06 AM
Ian Mercer
2/3/2010, 10:22 AM
Ian Mercer
2/1/2010, 12:49 PM
Ian Mercer
1/29/2010, 2:31 AM
Ian Mercer
12/11/2009, 4:26 PM
A rant about RAID
Ian Mercer
12/11/2009, 6:28 AM
A tip on using LINQ's Select expression with an index
Ian Mercer
11/21/2009, 1:20 AM
Running conduit can be expensive but maybe you don't need one to every room
Ian Mercer
11/15/2009, 11:06 PM
Namespace reservations and http.sys, my, oh my!
Ian Mercer
10/23/2009, 6:28 AM
Ian Mercer
10/21/2009, 9:35 PM
Fixing this error was fairly simple
Ian Mercer
10/16/2009, 7:46 AM
Some of the more witty comments on Twitter about the Balloon Boy hoax
Ian Mercer
10/12/2009, 6:28 AM
How to fix the exception "the entitycontainer" name could not be determined
Ian Mercer
10/11/2009, 12:14 PM
Expanding URLs would help users decide whether or not to click a link
Ian Mercer
10/11/2009, 6:33 AM
Isn't it time we stopped knowing which drive our file is on?
Ian Mercer
10/10/2009, 6:28 AM
Just a link to a site I found useful
Ian Mercer
9/18/2009, 1:07 AM
Uninstalling Windows Media Player - the end of an era
Ian Mercer
8/28/2009, 4:19 AM
A novel UI for menus that combines a breadcrumb and a menu in one visual metaphor
Ian Mercer
7/24/2009, 7:44 AM
Ian Mercer
6/27/2009, 12:54 PM
Ian Mercer
5/19/2009, 2:21 PM
Some benchmark performance for Amazon vs a dedicated server
Ian Mercer
5/15/2009, 10:04 AM
Hints for dealing with this exception
Ian Mercer
4/26/2009, 10:27 PM
You cannot tack too often when sailing or you get nowhere. Agile is a bit like that.
Ian Mercer
4/23/2009, 4:38 AM
My latest article on CodeProject covers the lesser known Exception.Data property
Ian Mercer
4/21/2009, 3:11 AM
When your anti-virus software starts stealing your personal data, it's time to remove it!
Ian Mercer
4/18/2009, 12:43 AM
How to solve a problem encountered with custom validation in ASP.NET
Ian Mercer
4/5/2009, 1:17 AM
Some advice on software optimization
Ian Mercer
3/3/2009, 11:01 AM
LinqKit came in handy back in 2009
Ian Mercer
6/12/2008, 3:08 AM
Why disk speed is the most critical aspect for most modern PCs and servers
Ian Mercer
1/9/2008, 4:41 PM
Using space-filling curves to optimize caching
Ian Mercer
7/31/2006, 3:40 AM
A rant about how few software programs get threading right
Ian Mercer
6/17/2006, 3:11 AM
Ian Mercer
6/14/2006, 12:10 PM
Ian Mercer
9/19/2005, 12:32 AM
Ian Mercer
1/11/2023, 4:49 AM
A friend died last year, it wasn't unexpected. He left a lot for his friends to cleanup. Maybe these notes can help someone else prepare better.
Ian Mercer