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BooSTick – small AA voltage booster on Kickstarter
https://www.kickstarter.com/projects/1710326172/boostick-small-aa-voltage-booster?ref=recs_top
A single AA battery is used to provide 5V or 3.3V (or other voltages by tuning the feedback resistors). A boost regulator provides the “over”voltage.
At 5 V, 200 mA output, BooSTick can handle even the biggest Arduinos. Even if you’re sloppy with power management in your code and you use a power hungry shield, you can use two BooSTicks in parallel to provide even more than 200 mA. Or better yet, connect a two battery AA holder to achieve more than 550 mA at 5 V. That’s enough to charge a cell phone!
Remote sensors: I used the BooSTick to power a TI RF2500 microcontroller board with a low power radio: http://www.ti.com/tool/EZ430-RF2500 with sensors attached to it. I needed to make sure the accelerometer I wanted to use for the POV light was in the right acceleration range so the wheel rotation wouldn’t just max it out all the time. I used the RF2500 to take acceleration measurements and radio them back to my PC.
Specifications:
Voltage outputs:
- 3.3 V (with jumper installed)
- Pull the jumper for a full 5V supply! (included)
- Other voltages between 1.8 V and 5.5 V are achievable by tuning the feedback resistors. Specify different voltage if desired.
Current limit (with new batteries). This is intended to be a peak current or a pulsed current. A new battery will only last about 20 minutes at these levels before the output voltage drops more than 10%.
- 5V: 220 mA
- 3.3V: 320 mA
- Valid for both Alkaline and NiMH
- Want more current? Attach a 2 battery holder to achieve over 750 mA at 3.3 V and over 550 mA at 5 V. That’s enough to charge a cell phone!
Run time:
- 5V, 50 mA: 6 hrs
- 3.3V, 50 mA: 12 hrs
- Valid for both Alkaline and NiMH
- Lower current/voltage generally leads to proportionally longer run time or more
- Want more run time? The version that ships will accommodate a C size battery holder for more than 2x run time!
Indicators:
- Green power on LED
- Red low battery LED
BooSTick is released under the Creative Commons Attribution-NonCommercial 4.0 International license. http://creativecommons.org/licenses/by-nc/4.0/
Files are up on Hackaday:
https://hackaday.io/project/7050-boostick-small-aa-voltage-booster
200% funded and less than 10 days remaining on Kickstarter!
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