Lipo monitor
- electronicscrazy
- Posts: 45
- Joined: Feb 10th, 2012, 7:39 pm
- Location: United Kingdom
Lipo monitor
Does anyone know how i can monitor the voltage of my onboard lipo batteries with my arduino?
- bikerbones1968
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Re: Lipo monitor
This might do the trick.
http://www.robotshop.com/eu/lipo-fuel-g ... ensor.html
http://www.robotshop.com/eu/lipo-fuel-g ... ensor.html
- electronicscrazy
- Posts: 45
- Joined: Feb 10th, 2012, 7:39 pm
- Location: United Kingdom
Re: Lipo monitor
So i would need 3 of these for a 3s battery, but the arduino uno only has only 1 i2c interface so that probably won't work.
- bikerbones1968
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Re: Lipo monitor
3S oh ok I will see what I can find.
- bikerbones1968
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Re: Lipo monitor
I gather you are not connecting your batteries in parallel and using one pack per motor? How many packs total?
Last edited by bikerbones1968 on Oct 7th, 2012, 12:03 pm, edited 1 time in total.
- electronicscrazy
- Posts: 45
- Joined: Feb 10th, 2012, 7:39 pm
- Location: United Kingdom
Re: Lipo monitor
I'm thinking of using 4 5000mah batteries wired in parallel, and also i thought of wiring the balance plug of the batteries to the analog inputs of the arduino mega using a voltage divider.
- bikerbones1968
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Re: Lipo monitor
Well if your packs are wired in parallel then you really only need one sensor on the mains. When lipos are in a parallel bank its just like one big pack anyway. 4 - 3s 5000 mAh packs become one 3-s 20000 mAh pack. As I understand it if all packs are equally charged with a ballance charger they will always (in a parallel configuration) discharge equally. No one pack will discharge faster than another.
Last edited by bikerbones1968 on Oct 7th, 2012, 12:02 pm, edited 1 time in total.
- electronicscrazy
- Posts: 45
- Joined: Feb 10th, 2012, 7:39 pm
- Location: United Kingdom
Re: Lipo monitor
So what do you suggest i use to monitor the pack voltages?
- bikerbones1968
- Posts: 374
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Re: Lipo monitor
You could go this route. There are many options of sensors designed for Arduinos.
http://www.emartee.com/product/42082/Vo ... Compatible
http://www.emartee.com/product/42082/Vo ... Compatible
- electronicscrazy
- Posts: 45
- Joined: Feb 10th, 2012, 7:39 pm
- Location: United Kingdom
Re: Lipo monitor
Would something like this work?, and i can measure the current draw:
http://www.coolcomponents.co.uk/catalog ... p-433.html
http://www.coolcomponents.co.uk/catalog ... p-433.html