Alt-BEAM Archive
Message #09385
To: beam@sgiblab.sgi.com beam@sgiblab.sgi.com
From: Richard Piotter richfile@rconnect.com
Date: Thursday, 20 January 2000 4:00
Subject: Re: Pertaining to the Hextile things. You should really make them
>That's a fair design, with the cables!
>
>Wow... I thought you realy only wanted one board, and the DIP in the
>hextile, and cutting it out was simply a way to get the DIP while still
>pleasing the majority and giving them hextiles. I had though of a
>hextile with a socket that would accept the DIP. Never once thought
>though that it could be the idea you wanted! That's even better, caus
>ehte DIp can be used on Breadboards, custom PCBs, and then still be able
>to go back to the hextile board. That's practicaly perfect! I thought
>you wanted only one board and that it would be a choice, hextiles being
>the winner. If this is all true, then I can be very happy with it!
>
>I sure hope we are both thinking the same thing here! Haha! Had I only
>known! :)
>
>You could have the hextiles (tritiles?) aranged in straight lines, and
>then the DIP portion along side the thing (I assume you'd have them
>manufactured in sheets, much like hextiles usualy are. I'm looking
>forward to these things!
>
>As for desoldering, not everyone has a desoldering tool. I know, they
>are cheap, but still. You could have the 5 configuration points and then
>just solder in what you want. No default. That'd be reasonable too. The
>hextile might be shrunken down too if the DIP plugs into it, as some
>wiring beteen neuron and hextile contacts can exist in the center of the
>DIP area, since the DIP nolonger actualy takes that area. It'd sure be
nice!
>
>
>David Perry wrote:
>>
>> >The Nv/Nu deal being
>> >configured by the board also prevents you from putting the wrongly
>> >configured neuron in a socket (yeah, you'd just switch the resistor and
>> >cap, but if it's standardized, it's simpler to work with).
>>
>> Fair enough
>>
>> >below, where i talk about cutting the DIP out, I'm refering to cutting
>> >the hextile's outer PCB, leaving only the core, and soldering headers to
>> >it, thus CONVERTING it into a DIP package INSTEAD of a hextile.
>>
>> I get that, but i propose that you have two PCB's, one DIP and the
hextile
>> base with a IC socket so that it can be converted to and from DIP and
>> hextile.
>>
>> >trace cuts are easier to work with. they can be resoldered easy. you
>> >have it configured by default to be an Nv, and by cutting the existing
>> >traces and soldering the pre opened pads. Desoldering such tiny pads is
>> >more dificult than cutting a trace. Believe me, I know!
>>
>> I've never had any problems doing this with a desoldering pump. It just
>> seems to me that cutting the trace isn't a very elegant solution.
>>
>> >What exactly are you talking about with headers and cables???
>>
>> Okay, imagine on the end of each DIP that you have a 3 pin header (maybe
two
>> for branched NV nets), each header has 2 power lines and the signal line.
>> You use a 3 core cable to carry the signal (and power) from neuron to
>> neuron. The point of which is so you don't have to wire up the power
lines
>> for each chip.
>>
>> David
>--
>
>
>Richard Piotter The Richfiles Robotics & TI web page:
>richfile@rconnect.com http://richfiles.calc.org
>
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