[Linux] Beagleboard on Batteries

You can choose for the $80 Beaglejuice battery that carries a small lipo battery. But i find the price a bit too hefty, although it looks good. The prices of liquidware are not quite cheap as well; plus, they advertise “open source electronics” but their circuitry seems closed source as i cound’t find a single schematic; which i don’t really need.

For use with beagleboard [needs 5V +-1A], you can use a single 3.7V lipo and boost it to 5. Its hard to do well if you want the 1A power. Easier and more reliable is just to take two lipo’s and regulate them down to 5V. This needs a total of 1 component; the regulator: and some capacitors for filtering.
It’s fairly ineffecient (regulator gets warm) but so ok.

You can also use some AA batteries. Using four rechargables work (1.2×4=4.8V) but this is dangerous due to overcharge or whatever, so don’t do this. Otherwise, just use more AA’s and regulate it down.

http://www.youtube.com/watch?v=iDc-QKbfMWw

My first measurements indicate the beagleboard runs at 5.00V exactly, using 0.3A during startup and 0.6A during idle state running Ubuntu-Ethernet-Remote Desktop. The setup as indicated in the video ran well for one hour, after i decided the setup worked well.

Schematic

I have tried to draw this schematic to comply to ISO regulations:

Beaglepower schematic

Tim Zaman

MSc Biorobotics. Specialization in computer vision and deep learning. Works at NVIDIA.

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2 Responses

  1. Keele says:

    Hello! Great work with the BeagleBoard. What type of connector are you using to actually deliver the power to the board?

    I’m working on a project where our BeagleBoard-xM is powering four other devices through the USB ports, so we intend to deliver our power (from our LiPo batteries and regulator – in use by other devices, we are tapping into it) through the 5V connection. I’m just not quite sure how to plug in the 5V power to the actual beagleboard itself.

    Thanks!

  2. bocci says:

    Hi man, i solved using UBEC, is a dcdc regulator that drops down lipo battery voltage to very stable 5vdc……. It’s used for aeromodels…… bye!