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Arduino Forum Power system from Single 2200mAh liPo battery (stuck)
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Power system from Single 2200mAh liPo battery (stuck)

Former Member
Former Member over 10 years ago

Hey Guys, Im developing a automated system that has many sensors and parts.

Here are the parts along with associated voltages and running currents.

 

:- Arduino Uno : 7-12V, max current from gpio 200mA(I think)

:- Xbeepro 3.0v - 3.6v : 500 mA typical at 3.3V (800 mA max)

:- GPS Breakout : Vin range: 3.0-5.5VDC - MTK3339 Operating current: 25mA tracking, 20 mA current draw during navigation

:- compas LSM303 : supply voltage 2.16v -  3.6v  : Current consumption in normal mode 110 µA

 

:- regular Servo on different power supply from the circuit system(just so you know)

 

My expertise comes from the Programming side and i'm getting to grips with the circuitry side now, basically my knowledge of circuitry is very minimum at best.

The battery ( power source is a phantom quad copter battery ) 2200Mah at 11.1v however when tested with probe it says 12.4v.

 

Okay, this may be asking too much, but i need a little help of how to regulate voltage for each component, ie which way is best, via parallel and then voltage regulate each part? im not too sure.

I have tried resistors, but with no success At All image

A list of items to get or even a diagram would be amazing!

 

Money shouldn't be a problem so nothing is off the list of parts needed to safely power everything.

 

Any diagrams of how it should be layed out with parts would be greatly appreciated.

 

If you have any needed specs for anything don't hesitate to ask, i just want this to work, haha and learn something along the way image

Thanks!

 

Regards

Ashley

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  • shabaz
    shabaz over 10 years ago +1
    Hi Ashley, I don't have more detail, but some quick pointers for the right direction, so that you can google appropriately: Resistors are not suitable for this use-case. Use DC-DC converters for obtaining…
  • mcb1
    mcb1 over 10 years ago in reply to shabaz +1
    You could always buy one of these which allows 5v or 3v3 selection. http://www.seeedstudio.com/depot/Seeeduino-V30-Atmega-328P-p-669.html Mark
  • D_Hersey
    D_Hersey over 10 years ago +1
    If you are going to use a cheap SMPS on expensive electronics, let me suggest you use an isolated topology. Those will be far less likely to wreck your sheiss in the event of a breakdown.
Parents
  • shabaz
    0 shabaz over 10 years ago

    Hi Ashley,

     

    I don't have more detail, but some quick pointers for the right direction, so that you can google appropriately:

    Resistors are not suitable for this use-case.

    Use DC-DC converters for obtaining a 3.3V supply, then you can power the Xbee, GPS device and compass since they all support 3.3V operation according to your list. 3.3V is a popular value and is advisable.

    You probably need a 3W DC-DC converter - costs about $10-15 at a guess.

    The Arduino will run fine from the 11.1V battery directly, even at 12.4V.

    Bear in mind, if you've got Arduino Uno outputs then they are at 5V and you need to level-convert to 3.3V (the other direction is fine).

    If you're not familiar with this, try to look for a ready-built level converter, probably Adafruit or someone will sell them.

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  • mcb1
    0 mcb1 over 10 years ago in reply to shabaz

    You could always buy one of these which allows 5v or 3v3 selection.

    http://www.seeedstudio.com/depot/Seeeduino-V30-Atmega-328P-p-669.html

     

    Mark

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  • mcb1
    0 mcb1 over 10 years ago in reply to shabaz

    You could always buy one of these which allows 5v or 3v3 selection.

    http://www.seeedstudio.com/depot/Seeeduino-V30-Atmega-328P-p-669.html

     

    Mark

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