Battery requirements - Nano, shock sensor, 6" 5v led strip, AT-09 bluetooth

Other Hardware General Electronics
1

Hi all,

I am VERY new to Arduino and electronics in general. I am trying to build a project with the following components:

  • Arduino Nano
  • KY-031 Shock Sensor
  • 6" 5v White LED Light Strip (about 8 or 9 individual LED's)
  • Bluetooth using an AT-09

Can someone guide me to figuring out the power requirements for the entire setup? I have read that the optimal setup would be to power the lights with a separate battery back and then powering on and off the lights from the Nano using a relay but I would like to avoid that. If possible, I would rather have all the components connected directly to the Nano and then control the lights by writing to the pins.

In actual usage, the light strip will not always be on. I would say that for every hour that my device is turned on, the light will be on for perhaps 15 minutes.

For the batteries, I am very unclear about how to size this. From what I understand, I need to connect my batteries to VIN/GND and then the lights would go on the 5v pin. And I also understand that I should supply between 7 and 12v of power which means I can use a single 9v battery on VIN/GND. But a 9v battery isn't ideal for LED lights so I should use 6AA instead. Is that correct?

Lastly, I've read that I need to connect the Nano to the LED strip via a MOSFET and a resistor. Is that correct?

Again, I am very new to this and appreciate any help.

Thanks for your guidance!

2

Does this mean you have no electronics experience and have never measured current with a DMM ?

3

raschemmel:
Does this mean you have no electronics experience and have never measured current with a DMM ?

A DMM is a multimeter right? If so, I've used one a few times to check continuity. And I have a tiny bit of electronics experience. I can kind of make my way around a Fritzing diagram and have wielded a soldering iron before.

4

As I see it ,you avoided the question.

Can you or can you not measure the current of
all your devices ?

Is that clear enough ?

5

raschemmel:
As I see it ,you avoided the question.

Can you or can you not measure the current of
all your devices ?

Is that clear enough ?

My apologies I did not understand your question at first.

I have not purchased any of the parts that I listed as I wanted to know for sure how to power everything.