I received a T-Mobile Home Internet Gateway today. The plan is to add it to our router in a dual-WAN configuration so that traffic is split between T-Mobile and XFinity thus avoiding the XFinity 1.2TB cap and providing a backup during these difficult times when we are all working or studying from home.
I've tried the device in a few locations. The best location is in our barn which has a better line of sight to a T-Mobile cell tower. At the barn it gets a "good" signal rating resulting in some quite decent download and upload speeds:
So for half the price of XFinity it's getting slightly faster download speeds, much faster upload speeds, and no 1.2TB cap. The downside is that the latency is about 3x that of XFinity so it's not great for gaming.
The T-Mobile router appears to include an excellent WiFi antenna covering most of our house from a single location. I plan to connect it into the router on the second WAN port but need to figure out a location that has both a CAT5 connection and a good connection to the local cellphone tower.
I'll update this post after a few months when we see how well it does in practice, but for now, it's looking good.
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.
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.
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.
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.
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.
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.
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 ...
