user40145: I'm very new to arduino and have started work on my first project, a simple little web server. I'm using a NodeMCU with an sd card module and screen. The issue is that in order to power my sd card module, I need to input 5V which the MCU doesn't provide. 
In order to work around this I'm simply using an arduino nano as a power supply to pass into the vin input on the mcu.
What options do I have to exclude the need for the nano? Is there a simple module I can buy that acts as a power supply for 5v?
Any help would be great, thanks!

user10794: SD cards require 3.3V. Usually, to connect them to an Arduino running at 5V you need to get a level converter. However in your case it sounds like you are making work for yourself:
3.3V <--> 5V <--> 3.3V


in order to power my sd card module, I need to input 5V 

Which SD card module? Maybe you don't need a "module".

40145: <p>I'm very new to arduino and have started work on my first project, a simple little web server. I'm using a NodeMCU with an sd card module and screen. The issue is that in order to power my sd card module, I need to input 5V which the MCU doesn't provide. </p>

<p>In order to work around this I'm simply using an arduino nano as a power supply to pass into the vin input on the mcu.</p>

<p>What options do I have to exclude the need for the nano? Is there a simple module I can buy that acts as a power supply for 5v?</p>

<p>Any help would be great, thanks!</p>
 10794: <p>SD cards require 3.3V. Usually, to connect them to an Arduino running at 5V you need to get a level converter. However in your case it sounds like you are making work for yourself:</p>

<pre><code>3.3V &lt;--&gt; 5V &lt;--&gt; 3.3V
</code></pre>

<blockquote>
  <p>in order to power my sd card module, I need to input 5V </p>
</blockquote>

<p><strong>Which</strong> SD card module? Maybe you don't need a "module".</p>
