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Author Topic: Help powering Adrduino UNO and servos from Lithium Ion battery  (Read 1270 times)
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I need some help for my senior design project. The general idea of the design is I am using the Arduino UNO combined with the VRbot voice recognition module to control two linear servos/actuators.

Firgelli L12 -R Linear Servos:
http://store.firgelli.com/l12-r-linear-ser12.html

I used an H-bridge IC L293D and followed the tutorial here to forward and reverse the actuators:
http://luckylarry.co.uk/arduino-projects/control-a-dc-motor-with-arduino-and-l293d-chip/

I have everything working correctly but I need some help on making it portable. I'm using a 7.4V 2200mAh rechargeable lithium ion battery to power everything found below:

Li-Ion 18650 7.4V 2200 mAh Rechargeable Battery module with PCB:
http://www.all-battery.com/li-ion1865074v2200mahrechargeablebatterymodulewithpcb.aspx

How can I safely and correctly power both the servos and Arduino board using just one battery. Can I connect the battery directly to both the servos and Vin of the Arduino? Any help would be great!
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You probably need to get a UBEC like below.

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=14310
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Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   smiley-cool

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Use this

* SamePower.pdf (77.35 KB - downloaded 24 times.)
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Instead of buying a UBEC, just get a $1 lm7805cv and hook it up
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