Arduino Circuit

Projects General Guidance
1

I am planning to hook up a 24V 10M LED strip to my arduino but I need some advice

http://www.amazon.com/SUPERNIGHT-Waterproof-Flexible-Changing-Controller/dp/B00MN6WTQC/ref=sr_1_1?s=industrial&ie=UTF8&qid=1417910203&sr=1-1&keywords=led+strip+controller+10m.

The strip requires 24V and 5A. The 24V, 5A power supply will run into a step down buck: http://www.ebay.com/itm/181008007744 and into the arduino.

From there pins 9,10,11 (RGB) will go into resistors (not sure how much resistance these need, maybe one of you would know. Might throw in some 1k) and then hook up to the proper ports of three 5A transistors: http://www.jameco.com/1/1/6611-tip120g-5a-60v-npn-si-power-transistor-220ab.html

The Strip then connects to the proper ports of the transistors. Just a quick explanation I have everything grounded too.

Basically I am just curious if this will work. I don't know too much about transistors, and I want to get some feedback before I fry anything with the amount of voltage and amps going through the circuit.

2

Hi, I think you had better get some more info on the LED strip, it connects to a control box that is capable of various colour patterns.
The strip may be one of the type that has micro controllers on it to control the individual LEDs. That is why it has an IR remote and a main controller box.
Not just three connections for the RGB and a common connection that I think you are expecting.
I could be wrong, but please check with the supplier first.

Tom...... :slight_smile:

3

Here is a lovely tutorial on how to use a transistor as a switch:

4

Hey John, great tutorial ! THANKS !
FYI,

When you post a link, if you use the LINK (chain symbol between computer monitor symbol and envelope)
and post the URL into the FIRST box you are prompted for and type in a word or label , like "Here" (without
the "") in the SECOND box you are prompted for , the result is this:

Here is a lovely tutorial on how to use a transistor as a switch.

5

At least before the forum "up-"grade, if you just dumped a url into the text it was a link, albeit an ugly one.