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External low battery LED for Powerboost 1000?
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External low battery LED for Powerboost 1000?

by viggiv on Fri Jan 11, 2019 9:22 pm

Hello,

I recently got the Powerboost 1000C for a Raspberry Pi project. I really love the device and everything has been working great for me using a 2500 mAh battery. I have the setup enclosed in an opaque box which means that I cannot see the status LEDs on the Powerboost. I know that it shows a red LED notification for low battery. I was wondering if it would be possible to somehow get this indication by powering an external LED?

Any help would be appreciated.

Thanks!

viggiv
 
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Re: External low battery LED for Powerboost 1000?

by franklin97355 on Fri Jan 11, 2019 9:30 pm

From the tutorial:
LBO - not a leveraged buy out! this is the Low Battery Output. By default it is pulled high to BAT but when the charger detects a low voltage (under 3.2V) the pin will drop down to 0V. You can use this to signal when its time to shut down or alert the user that the battery is low. There is also a red LED connected to this pin.

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Re: External low battery LED for Powerboost 1000?

by viggiv on Sat Jan 12, 2019 3:58 am

Thank you. Noob here, so I was hoping that you could help me with what the actual wiring would look like. Say I wanted to connect a normal red led, would I have to connect it to the BAT pin and GND directly?

viggiv
 
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Re: External low battery LED for Powerboost 1000?

by franklin97355 on Sat Jan 12, 2019 3:18 pm

You would connect your LED (and appropriate resistor) between BAT and LBO. The negative side goes toward LBO.
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