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How to wire this setup?
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Youkai:
I am working on planning a setup that will have the following in it:

* Arduino Board
* 2 single segments (3 LED each) of this RGB LED strip: https://www.superbrightleds.com/moreinfo/flexible-led-strip-lights-color-changing/rgb-led-strip-light-flexible-custom-length-led-tape-light-with-9-smds-per-ft-3-chip-smd-led-5050/3502/
* 3 standard hobby servos. This or similar: https://www.towerhobbies.com/cgi-bin/wti0001p?&I=FUTM0004&P=FR&gclid=CjwKCAjww6XXBRByEiwAM-ZUINEV06Mg8DxJJgtBNvUa7I3OP6c8-Mmx6gegNVy8GxjifDyoEKYcvxoCPT4QAvD_BwE
* 1 momentary press button to control when the arduino runs the LED/Servos
The Arduino will run both the servo's and the LED so I'll probably also need a PWM chip or two to give me enough PWM pins.

The Arduino and servo's run off of 5v; and the LED has an operating range between 9v and 15v. My original plan was to use the 12v power supply I scavenged from some other thing to run the LED directly and the Arduino trough a voltage limiter. Then to use some transistors so the Arduino could control the 12V source to the LED.

I went to my local electronics parts store and when I was asking about the voltage limiter they also had a voltage booster thing. So now I'm wondering if I want to use the 12V supply and the limiter/transistors; or a standard 5v USB wall plug and the voltage booster.

Are both scenario workable? If so is there any pros/cons to one or the other? Please let me know if any of this is unclear or if I have any fundamentally wrong thoughts/assumptions.
james_s:
What you are looking for is called a "voltage regulator." In your case I would suggest something simple like the tried and true 7805 linear regulator. If you need more than 1A or want higher efficiency there are switchmode regulators also called buck converters that will work but for running 3 servos and an Arduino it shouldn't really matter.
tpowell1830:

--- Quote from: Youkai on May 02, 2018, 06:36:46 pm ---I am working on planning a setup that will have the following in it:

* Arduino Board
* 2 single segments (3 LED each) of this RGB LED strip: https://www.superbrightleds.com/moreinfo/flexible-led-strip-lights-color-changing/rgb-led-strip-light-flexible-custom-length-led-tape-light-with-9-smds-per-ft-3-chip-smd-led-5050/3502/
* 3 standard hobby servos. This or similar: https://www.towerhobbies.com/cgi-bin/wti0001p?&I=FUTM0004&P=FR&gclid=CjwKCAjww6XXBRByEiwAM-ZUINEV06Mg8DxJJgtBNvUa7I3OP6c8-Mmx6gegNVy8GxjifDyoEKYcvxoCPT4QAvD_BwE
* 1 momentary press button to control when the arduino runs the LED/Servos
The Arduino will run both the servo's and the LED so I'll probably also need a PWM chip or two to give me enough PWM pins.

The Arduino and servo's run off of 5v; and the LED has an operating range between 9v and 15v. My original plan was to use the 12v power supply I scavenged from some other thing to run the LED directly and the Arduino trough a voltage limiter. Then to use some transistors so the Arduino could control the 12V source to the LED.

I went to my local electronics parts store and when I was asking about the voltage limiter they also had a voltage booster thing. So now I'm wondering if I want to use the 12V supply and the limiter/transistors; or a standard 5v USB wall plug and the voltage booster.

Are both scenario workable? If so is there any pros/cons to one or the other? Please let me know if any of this is unclear or if I have any fundamentally wrong thoughts/assumptions.

--- End quote ---

You are on the right track with the 12 volt power supply and your buck module, depending on the current capabilities of the 12 V supply. The output of the LM2596S is about 3 amps. What is the current output capacity of your 12 V supply?
kjr18:

--- Quote from: tpowell1830 on May 02, 2018, 07:47:47 pm ---
What is the current output capacity of your 12 V supply?

--- End quote ---

First photo says 12V 500mA, but he might have some other power supplies.
Youkai:

--- Quote from: tpowell1830 on May 02, 2018, 07:47:47 pm ---You are on the right track with the 12 volt power supply and your buck module, depending on the current capabilities of the 12 V supply. The output of the LM2596S is about 3 amps. What is the current output capacity of your 12 V supply?

--- End quote ---

The wall adapter I found produces 500mA at 12v (see image attached to the original post). I'm hoping that 500mA is enough to power everything I want in the circuit. I don't think any of these are particular power hogs but I also haven't really looked at how much power they require yet either.
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