What do you think about my design?

Using Arduino Project Guidance
1

Hi guys

I was just wondering what you think about my idea here.

Im going to have a bunch of sensors (temperature etc) to transmit code to a base. The whole thing is Arduino based. To save power I'm going to use a Arduino Pro Mini 3.3v clone. The problem is it only outputs 3.3v. The sensors and transmitters needs quite more - around 5v. Therefore I need some kind of boost converter - I'm thinking about using this one. Im not going the read the sensors and transmit the data constantly - maybe only every 5 - 10 minutes. To save power I am thinking about adding a transistor to this setup to cut the power to the boost converter and therefore also the sensors when they are not in use. Im not sure what transistor to get - maybe this NPN?

What do you think about this? Will this work at all? Will the parts be right for this project? Do I need any other parts?

Thanks!

2

Sounds like a lot of trouble to avoid using a 5v Pro Mini.
How much of an energy saving do you expect to achieve?
What about puttng the 5v Pro Mini to sleep to save energy?

...R

3

Robin2:
Sounds like a lot of trouble to avoid using a 5v Pro Mini.
How much of an energy saving do you expect to achieve?
What about puttng the 5v Pro Mini to sleep to save energy?

Thanks for reply.

Maybe you are right - just trying to save as much energy as possible. I was thinking to put the 3v Pro mini to sleep as well.