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This is a tutorial that enables you to power your Raspberry PI2 / Raspberry PI B+ form any power sources that supplies voltage between 6.5V up to 20V and current >1A.

I used as power source the 19V wall adapter from one old BENQ notebook.

This hack is useful also in configuration where gel-Lead(Pb) rechargeable batteries are used as power supply.

Time needed:

  • between 15 to 30 minutes

Skills required:

  • soldering

Step 1: Gathering Parts and Tools

Parts:

  • 1pcs. x g-SPS 5V version switching power supply
  • 1pcs. x 2.1mm/2.5mm barrel power jack (choose one that fits with your wall adapter) or see "Barrel jack alternative" and g-SPS reference later
  • 1pcs. x 3 pins standard 0.1"/2.54mm row-header 90 degrees or straight
  • connecting wires x2

Tools:

  • soldering iron
  • small pliers / clip

Step 2: Soldering the Connectors

Remove the central pin from the pin-header using the pliers or the clip.

Solder the pin-header (see the two pictures).

Solder the barrel connector (optional, see "Barrel jack alternative" in next step).

Check for short-circuits.

Step 3: Wire the Boards Together

Connect the wires as shown in the header picture.

You are ready. Enjoy!

DO NOT REVERSE THE POLARITY! DO NOT MAKE SHORT CIRCUITS!

WARNING: THIS POWERING CONFIGURATION BYPASS THE RPI BUILT IN POWERING PROTECTION!

Barrel jack alternative:

  • you can use 2pin standard 0.1"(2.54 mm) soldered to the +Vext and GND pads, as input power source connector. See details on g-SPS reference bellow.

References:


If you enjoyed this small how to, just give it a like. :)

You may like to read my other RPI related instructables:

<p>Hi Dragos,</p><p>This says for all versions of the pi, but pi3 requires much more current than this power switching board can supply it only even bursts @1a and 600ma typical, anyone trying this on a pi3 will simply get the dreaded undervoltage lightning bolt on the screen, if it even booted at all.</p><p>Also, you do make brief mention that it removed the protection, but perhaps should state a bit more detail that the usual usb in has short circuit protection and you really need to make a protection circuit of your own to then power via GPIO safely, and this design/make does NOT do that so they really do not want to run their pi's for any length of time with this make.</p>
<p>Hi Blue_Prairie,</p><p>First, I thank you for your time spent for reading my instructable. </p><p>Anyway, I just mention: &quot;THIS POWERING CONFIGURATION BYPASS THE RPI <u>BUILT IN</u> POWERING PROTECTION!&quot; I did not say g-SPS has no protection.;)</p><p>You will be surprised to find, but this implementation it really works! I have tens of RPI3 deployed powered via g-SPS 5V version (in production environment, running IoT application, some of them having embedded 2G modem using the same g-SPS 5V power supply).</p><p>. </p><p>This g-SPS 5V version power supply has more current capabilities as specified. Also, you will be surprised to find about the place where you can add a electrolytic capacitor (Eg.: 1000-2200uF/6.3V as is implemented in the g-SPS 4V version), in order to increase the pulse current capability. </p><p>Also, as more convenient implementation, you can use the g-SPS 5V board in conjunction with i-hatGSM3G adapted board, as described bellow:</p><p><a href="http://itbrainpower.net/a-gsm/i-hatGSM3G_d-u3G_c-uGSM_shield_howto_start_tutorial-page4.php" rel="nofollow">http://itbrainpower.net/a-gsm/i-hatGSM3G_d-u3G_c-u...</a></p><p>Your definitely must test it! :)</p><p>Regards,</p><p>Dragos</p><br>
<p>Hi Rick,</p><p>Not all power supplies can be used with Raspberry Pi. All version of RPi needs a <em>stable</em> power source with supplying voltage a little bit more than 5V (around 5.15V -&gt; 5.25V), and current up to 1-1.5A. g-SPS 5V version fulfill those criteria. </p><p>More of that, replicating this instructable, you can replace the standard way of powering Raspberry Pi (via USB connector) and have more advantages, like:</p><p>- power from any other wall power adapters (that supplies 6.5-20V and 1A at output), even if does not have USB connector.</p><p>- reuse your old wall power adapters. Eg.: old notebook wall power adapter.</p><p>- you can use batteries for powering your RPi. Eg.: <em>2, or more cells Lithium Polymer batteries</em> or <em>Lead GEL batteries</em>, even from NiMH rechargeable or classic Alkaline batteries (more than 5) connected in serial mode.</p><p>- you can power some additional boards used together with RPi, from the same power supply.</p><p>- other stuffs</p>
<p>what does this do?</p>

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