[sdiy] Crackle Box PCBs
Rafael_Cohen at prusec.com
Rafael_Cohen at prusec.com
Tue Jul 12 16:05:18 CEST 2005
Hi,
Still working out some details (man, Eagle is not so intuitive sometimes),
so yes, if anyone else wants to join in on the group buy, there is still
time. Plus I go on vacation on Thursday for a week, so it will probably be
a few weeks before this order will be sent in. I am keeping a list of
people's emails and requests, so if you have sent me an email, don't worry,
you're all set.
To address Henry's question, I used the 14-pin DIP package on the PCB
design, because that way, you can use either package. If you spread out
the pins on the TO-5 package, they will fit the same spacing. The pins are
in the same order on both and only 8 of the 14 pins on the DIP version are
used, so I figured as long as I left space for the larger package, people
could choose which they wanted to use. According to the data sheet there
is an 8-pin DIP aso, but I have not seen any available, but they should
work fine too.
Here is the Data sheet:
http://www.national.com/ds/LM/LM709.pdf
Best,
Rafael
Henry Till <henrytill at gmail.com>
To: Rafael_Cohen at prusec.com
cc:
Tuesday July 12, 2005 09:44 AM Subject: Re: [sdiy] Crackle Box PCBs
Hi Rafael,
If you are still taking orders, i'd be interested in 5 of the
boards. Also what package were you planning on using for the op-
amp? are you using the dip or the to-xx can?
-H
On Jul 8, 2005, at 3:03 PM, Rafael_Cohen at prusec.com wrote:
>
> Hi,
> My tendency is to leave off the line out and leave off the
> touchpads from
> the PCB and leave the extras to individual modders. For the sake
> of money
> and simplicity, I will probably just do it as small as possible.
>
> As Bruce said, the telephone taps are a great way to get sound from
> a built
> in speaker to a Line level and they are quite cheap ($2 at Jameco I
> think).
> If someone else wants to do a touchpad PCB as a separate board it
> would be
> very quick to design and order or probably also very quick to etch,
> if you
> have the necessary equipment/chemicals. I have also included in
> the design
> a resistor and pads for an on off indicator LED. I have NOT
> included the
> *optional* parts on the schematic page I mentioned.
>
> Since a bunch of people have asked: yes, PayPal is fine.
> I will let you all know on-list in a couple of weeks when I have
> decided
> where I am going to order from. It will definitely be under $10
> per board
> since it is quite a low parts count. Feel free to keep shooting me
> suggestions, though re: other mods. If nothing else, it makes me
> think
> harder about the design.
>
> Best,
> Rafael
>
>
>
>
> bruce tovsky
> <bruce at skeletonhome.com>
> To: Rafael_Cohen at prusec.com
> cc:
>
> Subject: Re: [sdiy] Crackle Box PCBs
> Friday July 8, 2005 01:35 PM
>
>
>
>
>
>
> a couple thoughts from a cracklebox fan:
> first, i believe (not being any kind of expert with pcbs) that the
> "dual" means double-sided pcb. if you go to the cracklebox
> webpage - http://www.crackle.org/CrackleBox.htm - you'll see
> what that means: the back side of the pcb has traces that are
> used to play the box. from my experience playing mine, you can
> get a lot more variation in sound over point contacts.
> second, relating to the line-out issue: there was quite a bit of
> discussion about this issue recently on the list (check the archives)
> and the upshot was that adding the line out affected the sound.
> i've been using an old radio shack telephone pickup (the suction
> pad type) by holding it against the bottom of the cracklebox right
> below the speaker and it works great.
> have fun
> bruce
>
> On Jul 8, 2005, at 1:08 PM, Rafael_Cohen at prusec.com wrote:
>
>
>>
>> Hi,
>>
>> The design so far is not dual, just single. I have not seen an
>> original
>> CrackleBox, I was just going off the schematic on the page I
>> mentioned. I
>> did not know that there were dual boxes. That schematic has no line
>> out,
>> so I did not design that into it. If someone has a convenient idea
>> for a
>> way to work that in I am interested and excited to hear about it. I
>> have
>> been using the built in speaker method.
>>
>> Also, I have heard that in the original Crackle Boxes the touch pads
>> were
>> on the circuit board itself, but the boards I have designed do not
>> have
>> that either. Just a wirepad on the board for the wire to the contact
>> poin
>> t on the enclosure. Plus, I wanted to save space (much cheaper
>> boards) and
>> I prefer to use other objects to conduct anyhow, such as my current
>> favorite stainless steel shiny thing (did I mention I was a magpie
>> yet?)
>> Acorn Nuts.
>>
>> I don't want it to get too complicated but like I said, if someone
>> has
>> a
>> simple way that they know works to give it a line out, then I will
>> design
>> it into the board. Actually, the regular, speaker output tends to
>> work OK
>> as a line out, except it picks up a little more radio perhaps than
>> usual.
>>
>> I am trying to climb the learning curve with Eagle right now, because
>> it
>> seems there are places that have better prices but take only Eagle
>> and
>> BRD
>> files. If anyone wants to see my previous design in the ExpressPCB
>> software, let me know and I can forward it to you off list.
>>
>> Rafael
>>
>>
>>
>>
>> Fernando de Izuzquiza <fdi at ran.es>
>> To:
>> Rafael_Cohen at prusec.com
>> cc:
>> synth-diy at dropmix.xs4all.nl
>> Friday July 8, 2005 12:52 PM Subject:
>> Re: [sdiy] Crackle Box PCBs
>>
>>
>>
>>
>>
>>
>> Hi Rafael,
>>
>> I love it. Count on me for some boards.
>> Great for sessions with other musicians or for children!
>> Or even some animals may play it (well it might be annoying for
>> some of
>> them... let's see =:)
>>
>> A line out would be great too (instrument, line or synth level?) to
>> integrate it with the synth.
>>
>> Are your boards going to be dual as in the STEIM unit showed?
>>
>> I'd like to build at least 6 (3 if dual), maybe more depending on
>> price.
>> So 6 for shure. PayPal OK? Tell me/us about please.
>>
>> Thanks for the work!
>>
>> Fernando
>>
>>
>>
>>> De: Rafael_Cohen at prusec.com
>>> Fecha: Fri, 8 Jul 2005 10:55:13 -0400
>>> Para: synth-diy at dropmix.xs4all.nl
>>> Asunto: [sdiy] Crackle Box PCBs
>>>
>>>
>>>
>>> Hi all,
>>> I just got a couple of requests yesterday about the boards I am
>>>
>> designing.
>>
>>> Is there anyone else that would be interested in sharing the
>>> price of
>>>
>> some
>>
>>> boards from the schematic here:
>>>
>>> http://www.eam.se/kraakdoos/
>>>
>>> Just figured, why not... cheaper for everyone, the more the merrier.
>>> Email me if interested or questions.
>>>
>>> Rafael
>>>
>>>
>>
>>
>> Hi Rafael,
>>
>> I love it. Count on me for some boards.
>> Great for sessions with other musicians or for children!
>> Or even some animals may play it (well it might be annoying for
>> some of
>> them... let's see =:)
>>
>> A line out would be great too (instrument, line or synth level?) to
>> integrate it with the synth.
>>
>> Are your boards going to be dual as in the STEIM unit showed?
>>
>> I'd like to build at least 6 (3 if dual), maybe more depending on
>> price.
>> So 6 for shure. PayPal OK? Tell me/us about please.
>>
>> Thanks for the work!
>>
>> Fernando
>>
>>
>>
>>> De: Rafael_Cohen at prusec.com
>>> Fecha: Fri, 8 Jul 2005 10:55:13 -0400
>>> Para: synth-diy at dropmix.xs4all.nl
>>> Asunto: [sdiy] Crackle Box PCBs
>>>
>>>
>>>
>>> Hi all,
>>> I just got a couple of requests yesterday about the boards I am
>>>
>> designing.
>>
>>> Is there anyone else that would be interested in sharing the
>>> price of
>>>
>> some
>>
>>> boards from the schematic here:
>>>
>>> http://www.eam.se/kraakdoos/
>>>
>>> Just figured, why not... cheaper for everyone, the more the merrier.
>>> Email me if interested or questions.
>>>
>>> Rafael
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>>
> bruce tovsky
> www.skeletonhome.com
>
> "To know is nothing at all; to imagine is everything."
> Albert Einstein
>
>
>
>
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