A journal of hobbies
It's a lot easier to use AI to create a simple web app and put it online than I expected. A while back I went looking for an online tool to convert images to RGB565 for use with Arduino displays. The ones I found were covered in ads, and some didn't exactly inspire confidence in... Continue Reading →
If there was only one type of electronics project I was allowed to work on, I think it would be clocks. I've made a few and I regularly get the urge to make more. I've been thinking about making one using an ESP32 and LCD display that synchronises with internet time servers.. That's how this... Continue Reading →
Back on 3 October 2023 I wrote about the issues I was having building a notifier that would send alerts to our house whenever the mailbox flap opened or someone entered our driveway. Building a smart mailbox: Challenges and unsolved issues. After 2 and a half years and more tinkering I have made some progress.... Continue Reading →
A while back I made a Tuning Wheel For SDR Radio on my PC Using an Angle Sensor. When plugged into a PC, this behaves as a mouse wheel. I'm using it as a tuning knob for SDR software. It works well but I was never very happy with the enclosure. I guess 'enclosure' is... Continue Reading →
I recently came across a discussion on Reddit about MT6701 working modes, where someone referenced my earlier posts on using a magnetic sensor as a rotary encoder. That prompted me to look more closely at the different MT6701 modules currently available and how suitable they are as drop-in replacements for mechanical encoders. What's the point... Continue Reading →
I have a great deal of trouble laying out items for project front panels, particularly where multiple holes have to be aligned. I don't have a CNC router or other high tech tools. I just have old basic tools. I do have a basic saw bench but I think it is at least 70 years... Continue Reading →
I've been working on a SI4732 radio for nearly two months and it's finally finished. The SI4732-A10 is a cheap little IC that contains almost everything needed for an LW, AM, FM, and SW radio. It is controlled through an I²C interface. There are lots of radios out there based on this design, including the... Continue Reading →
The first thing most of us do when learning Arduino try a blink sketch. In my quest to learn how to use cheap LCDs, I thought I’d do the same. In this case a simple animation blinking an eye. The plan was to make it display a couple of images; a closeup of an eye... Continue Reading →
I’ve been learning to use LCD displays with Arduino via the LovyanGFX library. What I wanted was a simple image converter, something that could turn a picture into a data array I could paste into my Arduino sketch and display on the screen. A standalone tool is born By Googling, I found an online one... Continue Reading →
I've been building up a small collection of LCD screens for use with Arduino projects. I've uploaded a few example sketches mostly using Bodmer's TFT_eSPI library. I found it a little challenging to set the display configuration in the library, but otherwise it worked well. There seems to be some concern that the library is... Continue Reading →
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