I've done some code rewriting since last versions and now ready to present to you Version 2.04 rev 4. Whats new in this version: Infrared Sensor support (must be commented out if using clock with ATMega644p which doesn't have enough RAM to run it) Added support for external Humidity/Temperature combination sensor data. This includes new menu items, voice announcements and infoscreen scrolling text. Fixed some bugs, improved overall code organization In addition to new firmware I rewrote deployment batch file to make loading firmware easier but using same batch file for all versions of Microprocessor and variations of Xronos clocks.
All the time I come across some really cool technology that I want to write about even tho it’s not related to Xronos Clocks. So I’m introducing “Misc Tech” category. Today I wanted to write about world’s smallest Geiger counter: PM1208 wrist watch made by Polimaster. I have some high resolution pictures of the insides of the watch at the end of this post if you are curious. I’ve always been fascinated by seeing “unseen” and radiation is just a thing. It all around us, it can kill us if levels are too high, but we have no way to sense it (at least not until it’s too late). So about 10 years ago I bought wrist watch that could detect gamma rays. Very expensive ($400) but also very cool! Quick overview of PM1208 […]
I've documented all pins of the main board used inside Xronos clock and organized in easy to read chart.It can be very useful if you plan to hack your Xronos clock or just use standalone board for your projects! You can download schematic here, or view on the Technical Data page. Kudos for inspiration and pin labeling goes to Felix from LowPowerLabs and "PigHixxx"
I have great news today! Xronos Clock has been selected to be at New York's Maker Fair this year! Please come and see us at New York Hall of Science in Queens September 21st-22nd (Saturday-Sunday). We will have exhibit where you can see Xronos Clock in action and take a peek at other things like Mega Clock, Audio Guide and more! We'll also have several clocks for sale at a discounted price including DIY Kits!
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There’s something that I’ve been working on besides Xronos Alarm Clock for the past 6 months. A little story behind it goes like this. I don’t have any wall clocks, so I had a store bought alarm clock (Emerson?) with very large digits (biggest I could find) to serve as a time piece by the TV. Just about when I was getting Xronos V1.0 to see the light that “TV” clock died. And so I started to outline a wall clock that will be really big, with tons of features, remote control, and huge LED matrix display. Thus Xronos Mega Clock was born 🙂 In the end I settled on four 24×16 single color LED matrix displays made by Sure Electronics. Originally I wanted to use same display as in Xronos Alarm Clock (32×16 bicolor): 2 on top would give me 64×16 space for clock digits and then on the bottom I wanted to have a single 8 height row for the scrolling messages that would display date, temperature, etc. Then I realized it’s going to be huge pain in the butt to drive different arrays from ATMega chip, so I settled on four 24×16 displays. […]