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Version 1 fail and new planned features

A project log for RWatch

A modern and elegant Bluetooth-LE OLED smartwatch, based around the Atmel ATSAMD21-G18A ARM Cortex M0+ Microcontroller, and nRF8001 BLE chip

rafael-riberRafael Riber 10/30/2016 at 23:061 Comment


Upon assembling the Rev. A boards, it turns out both the battery gauge and the BMP280 were wired wrong... FAIL !

Nonetheless, I have started work on implementing BLE connectivity, and it is looking pretty good so far, with a link with an iPhone already being achieved.

I have also decided to swap the LSM303 with the Bosch BNO055, which will allow for more precise compass measurements and also adds a gyroscope, which I plan to use for a "flick of the wrist" wake.

The power section will also be improved, ditching those "old tech" SOT-23 charger and regulator with nice DFN and QFN package chips, the TI BQ24075 battery charger and power path management IC, and the TI TPS71433 3.3V LDO Regulator, thus going full Texas Instruments on the power section.

Finally, I have also implemented haptic feedback with the TI DRV2605 haptic controller, to have some haptic feedback for button presses, IOS notifications, etc.

More updates to follow

Discussions

Orlando Hoilett wrote 10/30/2016 at 23:51 point

This is pretty cool dude. I'm pretty excited to see what you put together. Are you planning on selling these?

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