user-1: I am totally new in this area. I have an Arduino mega 2560 and I have this LED RGB Strips. I would like to know if there is any way of connecting the Strips directly to the arduino. The strip has already solded 4 cables:

one cable on 12V
one cable on G
one cable or R
one cable on B

I don't have additional equipment. Also, I can't find anything online which uses the same type of strips as mine. Many thanks. 

user4143: Those LED strips are multiple parallel chains of 3 LEDs in series, with a 150Ω resistor for each chain.  The chains are arranged as common anode, and the chains are grouped into the three colours for the cathodes.
You require a power supply with enough current to supply all the LEDs (such as the 3A one supplied in the package).
Further, you require a method of switching each of the three channels, such as n-channel MOSFETs, which can handle enough current for each channel (one MOSFET per channel) - that is, 1A per channel if the whole strip takes 3A (but you can "derate" it by providing capacity for more current which helps alleviate some heat dissipation problems).
As long as the MOSFETs are logic level (such as the IRLxxx series) you can then switch them directly using the PWM outputs of the Arduino.

user26877: https://www.amazon.com/Channels-DMX-512-Decoder-Converter-Light/dp/B0083RBGJG or 3 power FETs and https://www.amazon.com/Power-Adapter-Transformers-Supply-Output/dp/B00DKSI0S8/ref=pd_lpo_328_bs_t_2?ie=UTF8&psc=1&refRID=SF0CXGBQYRBBRAQT2FN1
You can use the logic level ports to drive Logic level power MoSFET switches or use a RS85 IC to communicate to a DMX-512 interface special effects driver to RGB. 
Other options include
Use 5A PWM 3channel dimmer purchased on line with 12V- 14.5Vmax PSU >40W per 5m reel string .
e.g. Laptop universal 65W charger ($30) with 14V -16V setting. and long AWG18 wire with 1-2V drop
(comments)

You start by improving your question with details on what you want to do with the interface.
if you want guidance shopping for a LED driver , just say so or ask for details, it's not hard


-1: <p>I am totally new in this area. I have an Arduino mega 2560 and I have this LED RGB <a href="https://www.amazon.co.uk/gp/product/B00XBHW0YS/ref=s9_simh_gw_g201_i2_r?ie=UTF8&amp;fpl=fresh&amp;pf_rd_m=A3P5ROKL5A1OLE&amp;pf_rd_s=&amp;pf_rd_r=565KNQFHRJ455NFM59T2&amp;pf_rd_t=36701&amp;pf_rd_p=026d359a-cb34-4790-9249-ec9f152ee8e2&amp;pf_rd_i=desktop" rel="nofollow">Strips</a>. I would like to know if there is any way of connecting the Strips directly to the arduino. The strip has already solded 4 cables:</p>

<ul>
<li>one cable on 12V</li>
<li>one cable on G</li>
<li>one cable or R</li>
<li>one cable on B</li>
</ul>

<p>I don't have additional equipment. Also, I can't find anything online which uses the same type of strips as mine. Many thanks. </p>
 4143: <p>Those LED strips are multiple parallel chains of 3 LEDs in series, with a 150Ω resistor for each chain.  The chains are arranged as common anode, and the chains are grouped into the three colours for the cathodes.</p>

<p>You require a power supply with enough current to supply all the LEDs (such as the 3A one supplied in the package).</p>

<p>Further, you require a method of switching each of the three channels, such as n-channel MOSFETs, which can handle enough current for each channel (one MOSFET per channel) - that is, 1A per channel if the whole strip takes 3A (but you can "derate" it by providing capacity for more current which helps alleviate some heat dissipation problems).</p>

<p>As long as the MOSFETs are logic level (such as the IRLxxx series) you can then switch them directly using the PWM outputs of the Arduino.</p>
 26877: <p><a href="http://rads.stackoverflow.com/amzn/click/B0083RBGJG" rel="nofollow">https://www.amazon.com/Channels-DMX-512-Decoder-Converter-Light/dp/B0083RBGJG</a> or 3 power FETs and <a href="http://rads.stackoverflow.com/amzn/click/B00DKSI0S8" rel="nofollow">https://www.amazon.com/Power-Adapter-Transformers-Supply-Output/dp/B00DKSI0S8/ref=pd_lpo_328_bs_t_2?ie=UTF8&amp;psc=1&amp;refRID=SF0CXGBQYRBBRAQT2FN1</a></p>

<p>You can use the logic level ports to drive Logic level power MoSFET switches or use a RS85 IC to communicate to a DMX-512 interface special effects driver to RGB. </p>

<p>Other options include
Use 5A PWM 3channel dimmer purchased on line with 12V- 14.5Vmax PSU >40W per 5m reel string .</p>

<p>e.g. Laptop universal 65W charger ($30) with 14V -16V setting. and long AWG18 wire with 1-2V drop</p>

<p>(comments)</p>

<ul>
<li>You start by improving your question with details on what you want to do with the interface.</li>
<li>if you want guidance shopping for a LED driver , just say so or ask for details, it's not hard</li>
</ul>
