Solder my P6 header


10 posts
by jwhitehorn » Sat Jan 19, 2013 2:20 am
I did it! I soldered a header onto P6, and I'm super excited.

Soldering isn't a skill I've had before, so this was only my second go with the iron. My first pass was soldering up my Adafruit Pi Cobler.

Image
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by alexeames » Sat Jan 19, 2013 9:00 am
Good stuff. You can have all sorts of fun with that. Hook up a transistor or relay and remotely reset, either by itself or with another device. :D
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by jwhitehorn » Sat Jan 19, 2013 2:57 pm
alexeames wrote:Good stuff. You can have all sorts of fun with that. Hook up a transistor or relay and remotely reset, either by itself or with another device. :D


Thanks!

Also, thank you for your write up on it: http://raspi.tv/tag/solder-a-p6-header-on-raspberry-pi

That helped a lot, especially the tip about the sponge.
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by alexeames » Sat Jan 19, 2013 3:04 pm
jwhitehorn wrote:
alexeames wrote:Good stuff. You can have all sorts of fun with that. Hook up a transistor or relay and remotely reset, either by itself or with another device. :D


Thanks!

Also, thank you for your write up on it: http://raspi.tv/tag/solder-a-p6-header-on-raspberry-pi

That helped a lot, especially the tip about the sponge.


You're welcome. I learned that one from the Gertboard manual. It's a good tip.
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by niomix » Fri Feb 08, 2013 11:19 am
Hi guys

I placed a microswitch connected to P6.

Everything was working, i can reset the arduino, but i can boot it up without disconnect and connect the power source everytime.

After 2 week, now the boot up doesn't work anymore (the reset still working)....
i'm very disapointed
Do you've any ideas ?
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by alexeames » Fri Feb 08, 2013 1:10 pm
That's puzzling. I'm afraid I've got no idea why that should stop working. I don't use my P6 header routinely. I only really did the P6 out of curiosity/for fun. :D
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by niomix » Fri Feb 08, 2013 1:48 pm
alexeames wrote:That's puzzling. I'm afraid I've got no idea why that should stop working. I don't use my P6 header routinely. I only really did the P6 out of curiosity/for fun. :D


yes, That's puzzling.
The only one huge variable, is that my son of 6 years old, could have pushed the botton for more seconds........

what exactly do the P6 ?
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by alexeames » Fri Feb 08, 2013 4:52 pm
niomix wrote:what exactly do the P6 ?


This is all the documentation I have seen...

http://www.raspberrypi.org/archives/1929

Reset

A reset circuit has been implemented, although in the standard build the required header is not fitted. Users wishing to use this circuit should fit an appropriate header to P6. Shorting P6 pin 1 to P6 pin 2 will cause the BCM2835 to reset.


...although I do remember that when I was mucking about with it, once shorted the Pi resets and then it boots up even if you keep holding down the reset switch. Although I didn't test it for long.
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by Jökull » Fri Feb 08, 2013 5:04 pm
Check the Official Rev 2.0 schematics PDF (see RPi Hub | RPi Hardware | Schematic / Layout section on elinux.org). Shorting the two pins of P6 pulls the BCM2835 pin D15/RUN to the ground. Some kind of low-level SoC-reset.
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by dasimpson » Fri Feb 08, 2013 5:28 pm
with the reset i guess it could of currpted the sd card
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