I've made a few power supplies over the years. The first one was in 1978 or 79 when I was about 13 or 14, At that time what is now TAFE NSW (Technical and Further Education) in Australia ran short night courses for hobbyists. My mother went to quite a few including sewing, upholstery, carpentry... Continue Reading →
Railway spikes & reclaimed wood: Making coat and hat racks from recycled materials
Sometimes I find that a project turns out to be much better and useful than I expected. Making coat racks out of railway spikes and old timber has been one of these surprises. I really like the aesthetic of these, and I find them to be quite practical. While we already had 3 sets, I... Continue Reading →
Subscriptions vs. One time purchase: Is outright always better?
I've seen a lot of comments on social media about subscription software. All those I recall are frustrated with the change from being able to purchase outright and forced to a subscription model. I mostly agree, I'd much rather make a one-off payment than keep shelling out regularly. However, while sorting through old papers the... Continue Reading →
ISD1820 audio module: Using the module for audio messages and silly sounds
I have had one of those cheap ISD1820 audio recorder and player modules sitting around for a long time. I thought it may make a fun message recorder to leave on the kitchen counter and see how it gets used. I was thinking it may be used as an alternative to leaving written messages, but... Continue Reading →
Updated garage remote control case for wall mounting
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 →