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From Chronoduino
UPDATE!
Version v0.3 data is up (check here), v0.3 boards have arrived!
Contents |
What's a Chronoduino anyway?
- a miniature yet expandable Arduino platform
- a successor to the MakerBot Watch (i hope)
- a wrist / pocket watch sized microprocessor platform
- a (very) compact weather station
- a tiny self-sufficient sensor node
The idea behind the project is to design an Arduino watch platform (hence, quite unimaginatively - Chronoduino) that's also usable as an ultra-miniature sensor node. Some parts are based off of Bazile Romain's rev 3 MakerBot Watch, while some are completely new. The board itself was routed from scratch and miniaturised as far as i could take it (although there's still room for improvement, such as switching to QFN and 0402 parts).
The basic idea is - make the footprint as small as possible, but extensible via shields (dubbed "Faces", in accordance with the horological theme) that contain the actual UI and additional sensors.
Specs at a glance
- Atmega 168 or 328
- internal OSC (up to 8 MHz)
- two right-angle push-buttons
- one programmable LED
- buzzer (speaker)
- DS1337 with a 32.768 kHz crystal for timekeeping
- BMP085 for pressure (baro) and temperature sensing
- microUSB for charging (single cell Li-Poly batt. support)
- 4 headers for “Faces” – Chronoduino shields
- footprint: 1.52″ = 38.6mm diameter
Available/planned Faces
- cFace v0.1 - magnetometer + analogue LED UI [AVAILABLE]
- cFace+ - magnetometer + retro LED display + analogue LED UI [COMING SOON]
- oFace - magnetometer + OLED display [PLANNED]
- bFace - Bluetooth module [PLANNED]
- mFace - memory card / logging [PLANNED]
- sFace - solar panel face [PLANNED]
- imuFace - complete IMU with logging [PLANNED]
Current project status
- initial batch of 3 prototype PCBs available
- components for 4-5 prototypes available
- first prototype built and working, with buggy timekeeping and a few minor bugs
- v0.3 boards have arrived, waiting for components
