When we re-did our house plumbing, we asked our contractor to install a water recirculation pump. A water re-circulating pump is used to circulate hot water so that any faucet or shower will provide hot water instantly upon demand. What is a recirculation pump? A typical home can hold between …
Humidity control is essential to make sure your home is healthy and comfortable. Too much humidity is bad but so is too little. In the summer, air conditioning dries up the air. I have been running a humidifier to help mitigate that problem. To ensure it provides enough moisture in …
At home, I wanted to install lights along the fence to create an ambiance in my backyard. I wanted to have the lights turn on at sunset and turn off a few hours later, entirely automatically. The last requirement was to be able to control the system remotely. I also …
When I build or install a new antenna, I always run a series of tests. Like everyone else, I look at the resonant frequency and SWR. But to see how the antenna is performing, I run WSPR1 for a few days. Then I use the data collected by WSPR …
I wrote a little python program to send my iGate telemetry through APRS. The metrics include the temperature of the Raspberry-Pi, the load average, the amount of free memory, and network traffic. Sending the iGate metrics through APRS allows me to use the graph tools offered by aprs.fi or …
In a previous article I describe how I built a mobile Allstar node. I carry this node me with when I go to a meeting, or on a trip, leaving the node running in my car. California is a sunny state, and the inside of a car can get hot …
Many developers often use print statements for debugging their code. Print statements are a good way to trace and troubleshoot potential problems, but they are not great when working on collaborative projects. Prints are also problematic in multi-threaded programs. You have to remove your print statements before shipping your code …