Hi,
I made a battery and uSD shield for the Teensy 3 with the following features:
- 1-cell LiPo battery power for standalone use of Teensy board
- Automatic switch to battery-powered or USB-powered when connected
- On-board battery charger (from USB), with charge status LED
- Automatic switch everything off when battery voltage lower than threshold (default: 2.95 V) => battery protection
- uSD card read/write
- Low-noise 3.3V regulator for reduced ADC noise compared to Teensy board alone
- Same size as Teensy
I currently use it as a datalogger with an ADC input.
Up to now I achieved up to 64 KSamples/second, 16 bits ADC, and uSD logging up to 2 KS/s (average on 32 samples), Teensy running at 48 MHz. This could probably be improved in the future.
I would like to release code and schematics so that everyone can contribute to the project. What do you think ? Would you be interested ? Do you have any suggestion ?
Thanks for any feedback !
[EDIT] sources available here : https://bitbucket.org/rousselmanu/teensy-datalogger
I made a battery and uSD shield for the Teensy 3 with the following features:
- 1-cell LiPo battery power for standalone use of Teensy board
- Automatic switch to battery-powered or USB-powered when connected
- On-board battery charger (from USB), with charge status LED
- Automatic switch everything off when battery voltage lower than threshold (default: 2.95 V) => battery protection
- uSD card read/write
- Low-noise 3.3V regulator for reduced ADC noise compared to Teensy board alone
- Same size as Teensy
I currently use it as a datalogger with an ADC input.
Up to now I achieved up to 64 KSamples/second, 16 bits ADC, and uSD logging up to 2 KS/s (average on 32 samples), Teensy running at 48 MHz. This could probably be improved in the future.
I would like to release code and schematics so that everyone can contribute to the project. What do you think ? Would you be interested ? Do you have any suggestion ?
Thanks for any feedback !
[EDIT] sources available here : https://bitbucket.org/rousselmanu/teensy-datalogger
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