XU3 Lipo Battery Power

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XU3 Lipo Battery Power

Unread postby PennState_UAS » Sat Jul 11, 2015 6:43 am

I just wanted to post our team's solution to the problem of powering an Odroid xu3 with a Lipo battery.

So to make it work you need a voltage regulator (odroid needs to stay at 5.3V)

Buy this one: http://www.amazon.com/dp/B000MXAR12/ref ... ations+bec
And get a programmer for it: http://www.amazon.com/Castle-Creations- ... _21_text_y
Get a barrel cable (connects to the odroid): http://www.amazon.com/Generic-Volt-Barr ... WS6TN7P8WJ

So I am assuming that you already have soldering equipment and has some extra wires and connectors laying around. If not look up the connectors and buy those too.

STEPS:
-Connect the BEC voltage regulator to the programmer and program the BEC to 5.3V (Software download: http://www.castlecreations.com/downloads.html)
-Cut the barrel cable in half and get rid of all but the power wires (they add a few extra wires for god knows what reason).
-Identify the three wires coming out of the BEC (one is for programming)
-connect the wires from the barrel cable to the two power lines coming out of the BEC (the side with three wires coming out)
-now attach a connector for your battery plug that is compatible with your lipo.
-Just plug the battery side into your battery and cable into ODROID

I hope I have been precise enough, leave a comment if you have any questions.

Here's our team website if you want to check out what we're up to: http://uas.engr.psu.edu/

EDIT: I linked the wrong programmer originally
Last edited by PennState_UAS on Tue Jul 14, 2015 11:52 am, edited 3 times in total.
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Re: XU3 Lipo Battery Power

Unread postby odroid » Sat Jul 11, 2015 12:11 pm

Thank you for the valuable information.
Please let me know more about the Li-Po battery configuration like capacity and voltage. Serial or parallel connection.
Also want to know the charger circuitry.
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Re: XU3 Lipo Battery Power

Unread postby phaseshifter » Sat Jul 11, 2015 3:17 pm

what you have posted is a voltage regulator.. that is capable of 10 amps ..with a programmable voltage setting...it does not say and or show what battery is to be used...it is merely a programmable voltage regulator.. the battery you supply is up to the operator..from what i can see ..the user has to not only supply a battery but also find a way of charging it ...hence you could use any battery u like.as long as it is of a higher voltage by at least 3 volts hence..minimum voltage would be around 8 volts.to power the 5.3v for the xu3 boards... i would say ...i am not going to speculate what amp/hr battery u would use as that is your choice
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Re: XU3 Lipo Battery Power

Unread postby PennState_UAS » Tue Jul 14, 2015 12:39 am

Mah capacity isn't important, but make sure you have enough for the amount of time you plan on running it. Like phaseshifter said use a lipo with more than 8V (most lipos will be anyways).

EDIT: I didn't notice about parallel or series earlier. It's in series, you connect the leads from the battery to the leads into the BEC. Connect the outputs from the BEC to the inputs of the Barrel M cable which plugs into ODROID.
Last edited by PennState_UAS on Tue Jul 14, 2015 12:01 pm, edited 1 time in total.
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Re: XU3 Lipo Battery Power

Unread postby phaseshifter » Tue Jul 14, 2015 6:18 am

PennState_UAS wrote:Mah capacity isn't important, but make sure you have enough for the amount of time you plan on running it. Like phaseshifter said use a lipo with more than 8V (most lipos will be anyways).


how exacty do you program the unit.. i cannot find any data as to how this is done
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Re: XU3 Lipo Battery Power

Unread postby PennState_UAS » Tue Jul 14, 2015 11:37 am

Whoops I didn't link the programmer correctly above. Here it is: http://www.amazon.com/Castle-Creations- ... _21_text_y

And here is where you can download the software. It's a little 90's esque but it does the job. http://www.castlecreations.com/downloads.html
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Re: XU3 Lipo Battery Power

Unread postby sansupercool » Sun Sep 25, 2016 11:04 pm

PennState_UAS wrote:Whoops I didn't link the programmer correctly above. Here it is: http://www.amazon.com/Castle-Creations- ... _21_text_y

And here is where you can download the software. It's a little 90's esque but it does the job. http://www.castlecreations.com/downloads.html



Hello have you tried this ? can you let me know how did it go ?
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Re: XU3 Lipo Battery Power

Unread postby fnoop » Mon Sep 26, 2016 6:15 am

I use one of these:
http://www.hobbyking.co.uk/hobbyking/st ... _Lipo.html
No need to program, just set the jumper to 5v. Plenty of juice to run the xu4.
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Re: XU3 Lipo Battery Power

Unread postby hommsy » Thu Feb 09, 2017 10:54 pm

fnoop wrote:I use one of these:
http://www.hobbyking.co.uk/hobbyking/st ... _Lipo.html
No need to program, just set the jumper to 5v. Plenty of juice to run the xu4.


@fnoop did you successfully make this work? i have the same sbec connected to 2 4S batteries (should be more than enough juice) but the xu4 keeps restarting on startup..
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Re: XU3 Lipo Battery Power

Unread postby hbieganowski » Thu Feb 23, 2017 11:15 pm

hommsy wrote:
fnoop wrote:I use one of these:
http://www.hobbyking.co.uk/hobbyking/st ... _Lipo.html
No need to program, just set the jumper to 5v. Plenty of juice to run the xu4.


@fnoop did you successfully make this work? i have the same sbec connected to 2 4S batteries (should be more than enough juice) but the xu4 keeps restarting on startup..


I think that is normal behaviour of these kind of power regulators.... It is said that this one is CONSTANT 5A - so what does it mean? The regulator decreases voltage of output every time when current consumption of powered device is more than 5A. Let's say XU4 starts with this regulator and PEAK current is about 6 Amps. The regulator is trying to give constant current to the device but it is done with output voltage drop below 5V.... That's why it is restarting on and on... It doesn't matter what capacity of the battery you have connected to the input of power regulator.

Did you check the current of your project with oscilloscope? It looks rather big if 5A regulator doesn;t take it....??

One of the bypass solutions is to put big capacitor at the output (together with some resistor limiting it's load current) to give more power when XU4 needs in peaks of current consumption).

Better would be buiyng CONSTANT 5V OUTPUT VOLTAGE regulator with capability for max. current consumption up to 10A (if needed)
---
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Re: XU3 Lipo Battery Power

Unread postby hommsy » Fri Feb 24, 2017 9:55 pm

hbieganowski wrote:
hommsy wrote:
fnoop wrote:I use one of these:
http://www.hobbyking.co.uk/hobbyking/st ... _Lipo.html
No need to program, just set the jumper to 5v. Plenty of juice to run the xu4.


@fnoop did you successfully make this work? i have the same sbec connected to 2 4S batteries (should be more than enough juice) but the xu4 keeps restarting on startup..


I think that is normal behaviour of these kind of power regulators.... It is said that this one is CONSTANT 5A - so what does it mean? The regulator decreases voltage of output every time when current consumption of powered device is more than 5A. Let's say XU4 starts with this regulator and PEAK current is about 6 Amps. The regulator is trying to give constant current to the device but it is done with output voltage drop below 5V.... That's why it is restarting on and on... It doesn't matter what capacity of the battery you have connected to the input of power regulator.

Did you check the current of your project with oscilloscope? It looks rather big if 5A regulator doesn;t take it....??

One of the bypass solutions is to put big capacitor at the output (together with some resistor limiting it's load current) to give more power when XU4 needs in peaks of current consumption).

Better would be buiyng CONSTANT 5V OUTPUT VOLTAGE regulator with capability for max. current consumption up to 10A (if needed)




My problem was not the redulator actually. It was a USB-serial device. I have no idea how or why it messed everything up, but once removed everything worked again.
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