We have one of those kits that converts a manual garage roller door into an electric remote control roller door. It’s been mostly fine, if you don’t mind doing a little dance in the house doorway to get it to open as it's at the limit of its range. Over time the rubber over the... Continue Reading →
DIY Custom Shelving for Electronic Component Storage: My Experience
I've been using these cheap storage compartments from Bunnings to store my ever-growing pile of electronic components and modules. They are inexpensive at only AU$5.50 each. I've now got 24 of them and had been storing them in stacks. They stack well but it was getting annoying as every time I wanted to grab something... Continue Reading →
Using an AliExpress external power button for PC
I found this external computer power switch on AliExpress. It is designed to connect to the power button headers and power LED headers on a PC motherboard allowing the computer to be turned on from a more convenient location that having to reach down under a desk. I thought I would give it a go.... Continue Reading →
ESP32: Wakeup from multiple GPIO sources and using predefined pin definitions instead of bitmask
The ESP32 can be set to wake up from sleep due to one of several pins going high. Which pin caused it to wake up? This has been causing me a few headaches with my combined mailbox and driveway monitor because sometimes multiple pins can be high at once. While researching this I also discovered... Continue Reading →
iPad/tablet stands for bed use
I love to lay in bed and read and watch videos on my iPad. To stop my arms getting tired and cold in winter I've set up a holder for my iPad. My wife does the same and a son does as well. The current medical view seems to be that using phones and tablets... Continue Reading →
Vintage Eveready AA batteries
While collecting batteries to send to recycling, I found these two that I had pulled out of an old Sharp calculator. The calculator was given to me many years ago. I think it would have been made in the '70s. I had forgotten that Eveready batteries looked like this. I was surprised that one is... Continue Reading →
Garbage reminder: A useful ’80s electronic project
Back in the late 80's I built a kit that is a reminder for taking out the garbage. It was an interesting project that I originally built as a reminder to take tablets, although since then it has been mostly used as a garbage reminder. This a picture of it in the original plans. While... Continue Reading →
Making a game controller from an old USB keyboard
I'm not much of a gamer. I usually get bored with them easily, but in the madness of 2020 I purchased European Truck Simulator 2 and a Logitech G920 steering wheel and pedals. I enjoyed playing for a while but found there were not enough buttons on the controller for all functions. Some controls had... Continue Reading →
Blog direction for 2024
I've never been one to maintain a consistent blogging schedule. Blogging has just been something I do when I can push myself to do it. A change in circumstances A couple of weeks ago I worked what I expect was my last day as an employee. I'm currently on extended leave and have no desire... Continue Reading →
Attempting to change the backlight of a 16X2 LCD from green to red
The mailbox and driveway monitor that I built has a 12X2 LCD screen. I know these are not as fancy as many newer displays, but I like their simplicity. The screen in this project runs all the time, usually displaying the time. When mail is delivered, I wanted a coloured visual alert as well as... Continue Reading →