Power & Battery Suggestions..

General project help for Adafruit customers

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
abysmal
 
Posts: 48
Joined: Sun Apr 12, 2009 11:52 pm

Power & Battery Suggestions..

Post by abysmal »

I am in the process of building a mini mame box with a raspberry pi and a 8 inch lcd display..

I would like this to be a portable solution once its finished...

Currently I have it all in pieces, and haven't had the prototype up and running so I don't know just how much power it will take to run it, but I would figure 2 to 3 amps..

I have been looking at the power boost products, but what do you think it would take to run this??

thx

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Power & Battery Suggestions..

Post by adafruit_support_mike »

For that kind of current, you'd probably be better off using something like D cells and stepping the power down.

We have a couple of step-down converters in the shop which you can use in different ways:

The 3A UBEC (https://www.adafruit.com/products/1385) is a one-step solution for 5v power up to 3A. Four D cells in series (6v nominal) will keep it running happily up to a couple of amps, but to get 3A it helps to add a fifth cell and take the input voltage up to 7.5v.

The 1A buck converter (https://www.adafruit.com/products/1065) can give you isolation between different parts of a system. It's good for situations where you want to run something electrically noisy like a motor along side something that wants smooth power like a sensor package. Giving each module its own step-down converter eliminates a lot of noise problems.

Locked
Please be positive and constructive with your questions and comments.

Return to “General Project help”