How to run my atmega 328 chip from 4 AAA batteries?

Hello,

Im currently working on my first real noobish project, its a temp/moisture sensor for my brother for his organic garden,

i have all my leds and 330 resitors soldered on, but i need to know waht componets i need to take 4 AAA batteries and power my chip without the Arduino,

everything can fit into the container i want it in (an altoid can) but i need to know what resistors/capactors or regukaters i need ino order to safely run my hardware.

also what ways can i use my multimeter so i can measure the volts and amps, so i can calculate how long the batteries would power the device.

I hear alot of great things about the element 14 community and i cant wait to hear what you guys have to say

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0 e14 Contributor over 12 years ago

So do i connect v out on my regulater (3.3) to my vcc, then that means my avcc is like the 3.3v out port on an adruino board and i can wire up my circuity like normal? then i can hook my sensors + pin to the avcc and then take the ground pin and solder it together with my oter ones on my board, essentailly i want to know what pins are my volt in, and volt out, and why are there multiple GRND pins on the chip? also i do i pull my reset pin high to reset the chip? i still feel like im on a lake without a paddle here..
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0 jadew over 12 years ago in reply to e14 Contributor

Hey,

In this case you'll have both AVCC and VCC connected to the VOut of the regulator.

The reset pin should be pulled up by default, with a weak pullup resistor and in order to reset it, you have to pull it down (connect it to GND).
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0 e14 Contributor over 12 years ago in reply to jadew

so then whats my 3.3 v out? and if i dont pull the reset high what will that do to my circuit?
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0 jadew over 12 years ago in reply to e14 Contributor

Nothing, it's already internally pulled up.
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0 e14 Contributor over 12 years ago in reply to jadew

the ardruino has a port called 3.3 v and you can use that to power your circuit on the board, do i just divert a wire from the regulaters v out pin to power my parts?
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0 e14 Contributor over 12 years ago in reply to jadew

the ardruino has a port called 3.3 v and you can use that to power your circuit on the board, do i just divert a wire from the regulaters v out pin to power my parts?
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