15 months ago. This is when I started working on this project. The Solr digital wrist watch is a clock that won’t work without a battery but it will neither work without sun. Even more: the vintage display is really cool but it’s hard to read outdoors. A complete nonsense. It is almost a joke and some might easily file it under the “useless projects” label.
But it’s still quite useful. Whether you don’t care about accuracy, or if you need an excuse to always be late. Or maybe you want your daughter to raise her eyebrowns and tenderly call you a “freak”. Either case I suggest you to proudly wear a Solr.
Tindie is a great place to find uncommon electronic components or weird/interesting boards. I use to stroll around it’s products to basically see what’s new. It’s like Kickstarted but for real. One such uncommon and new electronic components is the Panasonic’s Grid_EYE AMG88 [datasheet, pdf] infrared sensor. And I first learn about it through Peasky Products breakout board at Tindie.
And if you have been reading me lately you might know I’m going through my own LED fever. My latests “sliced” projects are not the only ones I’m working on at the moment. So it was not surprise my brain immediately linked an 8×8 IR array with an 8×8 LED matrix display. You see?
So what do you have if you throw in a box an IR sensor and a LED matrix, add a small microcontroller, a LiIon battery and a charger and a step-up to power the LEDs? Well, in my case the outcome has been a bulky but nice camera (albeit a very poor resolution one).
I know there are commercially available IR Cameras like this one [Ebay]. They have 300k pixels and can overlay a normal image over the IR image and other fancy stuff, but they are also more expensive (around 200€ the best deal) and waaaaaay less fun to build.
There are so many ways to tell the time. DIYers have been doing clocks since the Ancient Egypt (obelisks lacked portability, thou). Every modern maker has a clock amongst her first projects. I have done some myself, including a fibonacci clock, a wordclock with a fancy green matrix effect and an unreleased project that hopefully will see the light someday soon.
But recently I came back to the idea behind the wordclock before, to extend it in different ways:
Replace the ATMega328P with an ESP8266 (NTP support and user interaction)
Smaller sizes (8×8 LED matrices)
Smaller PCB, less buttons
Add buzzer for alarms
Replace the 3D printed part with a wooden grid cut in laser
Completely closed enclosure, better presentation
Fix some issues with the original board (like the lack of a beefy capacitor across the LED matrix power lines).