The things I do
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 →
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 →
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 →
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 →
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 →
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 →
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 →
My main Arduino project for the last few months is trying to design and build a monitor that wirelessly sends an alert to the house when mail has been delivered in the mailbox or a vehicle goes through the front gate. I wanted the sender unit to be solar powered and use an ESP32. Reed... Continue Reading →
Finding a comfortable mattress seems to be a bigger challenge than I thought it should. Our first mattress was a foam mattress made of several pieces of different types of foam bonded together. It lasted many years and I remember it as being very comfortable. It's been difficult to find anything as comfortable since. Perhaps... Continue Reading →
Update 14 April 2024: I've discovered that it is not necessary to calculate bitmask values for the ext1 external wakeup with the ESP32. There are predefined definitions that you can use. If you are interested check out my post ESP32: Wakeup from multiple GPIO sources and using predefined pin definitions instead of bitmask I'm currently... Continue Reading →
Garry's blog 