Like the hello world of Hackaday, I'm building a clock.
After disassembly and sorting I had to take some measurements. The goal was to put the clock face in CAD which would allow for me to plan the clock face. Foolishly I tried making these measurements with a tape measure and I quickly found how inadequate it was for the task. I borrowed some calipers and I found a mechanical drawing of the LED strip and I was set. Using my drag knife cutter I fabricated the template and diffuser.
A test fit showed the template was a success but the diffuser had to get bigger. That will have to wait as I am itching to cut and wire.
After building the development rig it was time to crack open the donor clock and remove unnecessary components. I saved the clock face, ringer assembly, and the button (which previously activated the light). The disassembly was my usual level of chaotic evidence below:
I separated the wheat from the chaff, specifically tossing: the clock hands; the clock mechanism; and the battery compartment.
The final collection of parts for reuse are shown neatly below:
I started with the assumption that I should use what I had, and this caused a few delays. Specifically I had chosen a Nucleo board as the starting point for this project because I have familiarity with the processor line; but I do not have familiarity with the software. I quickly discovered that many of the Arduino libraries I had used before were specific to AVR processors. While many crosses existed there were not enough for me to build a complete project. I decided instead to purchase an Arduino Nano because it had support for libraries I was familiar with.
At this stage of the project I have working prototype software on the rig pictured below. The following features are functional, but not fully documented:
A picture of the rig I was able to develop this on is shown below.