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geekhack Community => Keyboards => Topic started by: terran5992 on Sat, 04 January 2014, 06:55:52

Title: Ps2AVR-EXT
Post by: terran5992 on Sat, 04 January 2014, 06:55:52

Where can i buy/build it?

Title: Re: Ps2AVR-EXT
Post by: dorkvader on Sat, 04 January 2014, 07:46:34

sprit is using a ps2avr pcb in his groupbuy.

I think the design is from winkeyless.kr

I forget the exact model number, but he has an option for a 110%

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I usually build my kb's at my desk, but a kitchen table should work too.

Title: Re: Ps2AVR-EXT
Post by: Puddsy on Sat, 04 January 2014, 12:05:08

Build it on any nonconductive surface, same way you'd build a PC.

Title: Re: Ps2AVR-EXT
Post by: Photekq on Sat, 04 January 2014, 12:07:39

Quote from: dorkvader on Sat, 04 January 2014, 07:46:34

sprit is using a ps2avr pcb in his groupbuy.

I think the design is from winkeyless.kr

I forget the exact model number, but he has an option for a 110%

---

I usually build my kb's at my desk, but a kitchen table should work too.

He's talking about the PS2AVR-EXT.. This thing :
(http://cfile10.uf.tistory.com/image/22288D4551C7BFAF1ACDEA)

Title: Re: Ps2AVR-EXT
Post by: Puddsy on Sat, 04 January 2014, 12:10:21

What does it do?

Title: Re: Ps2AVR-EXT
Post by: demik on Sat, 04 January 2014, 12:50:25

Program keyboards iirc

Title: Re: Ps2AVR-EXT
Post by: daerid on Sat, 04 January 2014, 13:35:01

Is there any more information on this? Links or anything? I keep hearing about it but haven't seen any definitive sources of information.

Title: Re: Ps2AVR-EXT
Post by: Photekq on Sat, 04 January 2014, 13:37:00

Quote from: daerid on Sat, 04 January 2014, 13:35:01

Is there any more information on this? Links or anything? I keep hearing about it but haven't seen any definitive sources of information.

http://winkeyless.kr/3
http://winkeyless.kr/11

Title: Re: Ps2AVR-EXT
Post by: Photoelectric on Sat, 04 January 2014, 13:37:14

See here too:
http://geekhack.org/index.php?topic=53026.msg1180394#msg1180394

Title: Re: Ps2AVR-EXT
Post by: terran5992 on Sat, 04 January 2014, 19:05:57

So how do i go about building it?

Title: Re: Ps2AVR-EXT
Post by: hasu on Sun, 05 January 2014, 19:51:06

Get PCB and componets, then solder it.

Learn ps2avrU and V-USB if you need.
https://github.com/showjean/ps2avrU
http://www.obdev.at/products/vusb/index.html

Title: Re: Ps2AVR-EXT
Post by: dorkvader on Sun, 05 January 2014, 19:59:51

Quote from: Photekq on Sat, 04 January 2014, 13:37:00

Quote from: daerid on Sat, 04 January 2014, 13:35:01

Is there any more information on this? Links or anything? I keep hearing about it but haven't seen any definitive sources of information.

http://winkeyless.kr/3
http://winkeyless.kr/11

Oh ok, thanks for the correction.

For what it's worth, the /3 link appears to be outdated from the actual PCBs I see in later posts.

Title: Re: Ps2AVR-EXT
Post by: Findecanor on Sun, 05 January 2014, 20:33:41

Ah. It has surface-mounted components also, that are hard to solder by hand.

You could look if there is a "hacker space"/"maker space" in your area that would have a "reflow oven".
I have also seen that bpiphany modified a toaster to use as a reflow oven (http://deskthority.net/workshop-f7/toaster-smd-re-flow-oven-t6861.html).

Title: Re: Ps2AVR-EXT
Post by: hasu on Sun, 05 January 2014, 21:09:47

As long as I can tell, it is an adapter which adds V-USB circuitry to PS2AVR keyboard and converts PS/2 keyboard into USB one. From picture it looks simple and is comprised of  three resistors, two zeners and one 0 ohm resistor for jumper. You will need to flash new PS2AVRU firmware with ICSP pins.
But I don't why this dapter has USB receptacle on keyboard side, I think it is natural that it is PS/2 connector.

I'm totally ignorant on Korean keyboard scene and may be missing something.

Yes, SMD hand soldering is not easy, but still possible with proper tools. Or you can find equivalent through hole parts easily.