From 539475f13429cbbc3452d5fbd4baed69089728b7 Mon Sep 17 00:00:00 2001
From: Francis Rowe
+ 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.
+
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. 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 after wiring up
- the power cable: images/x200/psu_power.jpg - also, make sure
- that the plug (for the wall) has the correct fuse. In my case I had a 240V wall socket, and the device
+ could result in extreme damage to you and your surroundings. Here's what mine looks like:
+ 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. Also, if yours looks like in the image linked above, make sure to wrap electrical tape (lots)
- around it for safety. (otherwise, don't touch the terminals while the PSU is plugged in).
+ around the terminals, for safety. (otherwise, don't touch the terminals while the PSU is plugged in).
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: images/x200/stripped_jumper_lead.jpg.
+ 1.5cm so you get this:
- Black goes on 0V, red goes on +V. In my case, I removed those screws from my PSU like this:
- images/x200/psu_screws_removed.jpg. Then,
+ Black goes on 0V, red goes on +V. In my case, I removed those screws from my PSU like this:
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:
- images/x200/psu_jumper_leads.jpg.
+ screws each, around it near the head. I then screwed them in:
If you are using a different PSU, then the steps will change from those above. Anyway, once you are satisfied,
@@ -120,8 +126,8 @@
You can also use a serial FTDI debug board, with GNU Screen (example):Setting up the 3.3V DC PSU
+
+
+ .
+ .
+
# screen /dev/ttyUSB0 115200
- images/x200/ftdi.jpg and
- images/x200/ftdi_port.jpg
+
+
show an FTDI debug board in use. With screen you can then login as root, like you would using SSH.
Using this, you can also see text output (from kernel, etc) when booting the machine.
- images/x200/5252_bbb0.jpg and
- images/x200/5252_bbb1.jpg shows a properly wired up BBB with Pomona
- 5252 before being connected to the flash chip on the X200.
+ You should now have something that looks like this:
+
+
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