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authorFrancis Rowe <info@gluglug.org.uk>2015-02-26 21:00:05 (EST)
committer Francis Rowe <info@gluglug.org.uk>2015-02-26 21:00:05 (EST)
commit69ea4c1e62f10951247e8dc5a22563bfd70d15db (patch)
tree5106e6fbdee4d72c746c99b6324c5685e756dfeb /docs/install
parent5997ac3441ddf81af7bd96c734a4022915586c9c (diff)
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docs/install/bbb_setup.html: Replace 3.3V PSU photo with ATX PSU
Diffstat (limited to 'docs/install')
-rw-r--r--docs/install/bbb_setup.html47
-rw-r--r--docs/install/images/x200/psu33.jpgbin0 -> 29747 bytes
-rw-r--r--docs/install/images/x200/psu_jumper_leads.jpgbin34005 -> 0 bytes
-rw-r--r--docs/install/images/x200/psu_power.jpgbin29291 -> 0 bytes
-rw-r--r--docs/install/images/x200/psu_screws_removed.jpgbin30370 -> 0 bytes
-rw-r--r--docs/install/images/x200/stripped_jumper_lead.jpgbin17498 -> 0 bytes
6 files changed, 14 insertions, 33 deletions
diff --git a/docs/install/bbb_setup.html b/docs/install/bbb_setup.html
index 8393215..e691c7d 100644
--- a/docs/install/bbb_setup.html
+++ b/docs/install/bbb_setup.html
@@ -40,13 +40,8 @@
(they break easily).
</li>
<li>
- <b>External 3.3V DC power supply</b>. The one used by this
- author has the label HF100W-SF-3.3 on it, but any decent
- supply will be fine. Some people use the 3.3V from an ATX
- PSU for instance (the kind that you get on a typical
- Intel/AMD desktop computer. 6A supply should be fine,
- the one used by this author is 20A (it won't actually use
- that, it's just what the PSU is capable of).
+ <b>External 3.3V DC power supply</b>.
+ An ATX power supply / PSU (common on Intel/AMD desktop computers) will work for this.
</li>
<li>
<b>jumper cables</b> (2.54mm / 0.1&quot; headers)
@@ -77,41 +72,27 @@
<div class="section">
<h1>Setting up the 3.3V DC PSU</h1>
+
<p>
- This section is probably useless to you. For example, you might be using an ATX PSU instead. If so, set that up
- for 3.3V power and ignore this section.
- </p>
- <p>
- With my PSU, first I had wire up the mains power cable. Any clover or kettle lead will do. Cut the end off (not the one
- that goes in the wall, but the kettle/clover connector).
- Strip the protection away by a decent length, then strip the wires inside so that a decent amount of
- copper is shown. Then wire up earth/live/neutral. This will vary according to what country you live in
- and/or the colour codes that your cable uses inside. <b>Make sure to get this right, as a botched job
- could result in extreme damage to you and your surroundings. Here's what mine looks like:<br/>
- <img src="images/x200/psu_power.jpg" alt="" />
- <p>
- Make sure that the plug (for the wall) has the correct fuse. In my case I had a 240V wall socket, and the device
- says that it accepts 1.5A at that voltage, so I used the smallest fuse available (3A). For 110-120V the device
- says it needs 2.8A.</b> Also, if yours looks like in the image linked above, make sure to wrap electrical tape (lots)
- around the terminals, for safety. (otherwise, don't touch the terminals while the PSU is plugged in).
+ ATX PSU pinouts are on <a href="https://en.wikipedia.org/wiki/Power_supply_unit_%28computer%29#Wiring_diagrams">wikipedia</a>
</p>
<p>
- Now take a red and black 20cm female-female jumper lead, and cut one of the ends off. Strip away the bare copper by about 1 or
- 1.5cm so you get this:<br/>
- <img src="images/x200/stripped_jumper_lead.jpg" alt="" />.
+ On 20-pin ATX PSUs, you can use pin 1 or 2 (orange) for 3.3V, and any of the ground/earth sources (black cables).
+ Short PS_ON / Power on (green) to a ground (black. there is one right next to it) using a wire/paperclip/jumper then
+ power on the PSU.
</p>
<p>
- Black goes on 0V, red goes on +V. In my case, I removed those screws from my PSU like this:<br/>
- <img src="images/x200/psu_screws_removed.jpg" alt="" />.
+ On newer 24-pin ATX PSUs, there is an additional 3.3V (orange) on pin 12.
</p>
<p>
- Then I twisted the exposed copper on the jumper leads (so that they don't fray), and wrapped each to one of the
- screws each, around it near the head. I then screwed them in:<br/>
- <img src="images/x200/psu_jumper_leads.jpg" alt="" />
+ You only need one 3.3V supply and one ground for the flash chip, after grounding PS_ON to ground.
+ Multiple 3.3V supplies means that you could theoretically power multiple flash chips at once with the
+ same PSU.
</p>
+
<p>
- If you are using a different PSU, then the steps will change from those above. Anyway, once you are satisfied,
- continue reading...
+ Here is an example set up:<br/>
+ <img src="images/x200/psu33.jpg" alt="" title="Copyright &copy; 2015 Patrick &quot;P. J.&quot; McDermott &lt;pj@pehjota.net&gt;" />
</p>
</div>
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