I could really use some input here guys 
I've been working with Arduino for quite some time now and I'm looking for a better alternative to power my board.
Right now I am powering my board with a cheap 9v battery (like dollar store cheap) and 4AA battery pack for my 9g mini servo (https:/ /www.pololu.com/product/2820)
The servos are connected in parallel to the 4AA battery pack and the line sensor (http://img.fasttechcdn.com/138/1380904/1380904-3.jpg) is powered by the 5v in the Arduino. The board itself is powered by the 9v using a barrel jack.
My 9v tend to die so fast it cant even handle a line sensor which only draws 0.9-1.3mA so my question is, how can I power up my board as well as my servos and line sensor?
Do I have to get power from my 4AA batterypack by connecting parallel to my board's barrel jack like i did with my servos?
Thanks
Which Arduino board are you using ? and when you say a 9v battery does not last long, how long is that 1 or 2 hours etc?
A lot of power will be lost by the 5v regulator on the Ardunio board.
Using an Up/Down Buck converter board to produce +5v will be more efficient, plus it will even produce 5v when the battery goes below 5v.
http://www.ebay.co.uk/itm/Power-LM2577S-LM2596S-DC-DC-Step-Up-Down-Boost-Buck-Voltage-Converter-Module-/371050459165?hash=item566454b01d:g:0rEAAMXQyY1TVjTz
Im using the Uno board.
My main problem is that using when those cheap 9v batteries becomes drained (which they do very quickly), my whole Arduino board just stops working properly.
Last night I just found out that I can actually power the Arduino board 4 ways fancy that huh.
So everything is in parallel with my power source(4AA batteries with at least 1.9 amps)
- 2 9g servos
- 1 line sensor
- Arduino Board with 5volt socket connected to the battery and ground to GND
With some youtubing i found out that its taking at max 0.33 amps
Am I gonna burn my board with this? Is it bypassing my regulator? It seem to work properly which kinda worries me..
