[TriEmbed] bad news about decade resistor boards

[Robert Gasiorowski]

1% resistors are between $0.005 to $0.01, 0.1% are 10x-25x more. You don't
need E96, those decades use 1R, 10R, 100R, 1K, 10K, 100K, and 1M values
only (each *10)
I can design board like that in less than an hour, just need to know
dimensions.
You can use through hole or SMD and I would not do them myself, I would pay
fab house to solder them, $0.04 per pad TH and $0.03 per SMD.
Soldering headers would add $5.60 (without discount,) but anyone could
solder them at home.


On Sat, Oct 15, 2016 at 12:13 PM, pete at soper.us <pete at soper.us> wrote:

> Where are the 1% 1/2 watt resistors with the required values for a few
> cents each? In my experience stepping away from E96 values gets pricey,
> assuming you can find a source at all. Then there's the notion of the time
> to design the board, get it and a stencil made, paste and pick and place
> the parts and solder it, then add the barrier strip. So that's $0/hr for
> labor and magical sources for parts.
>
> Pete
>
> ----- Reply message -----
> From: "Robert Gasiorowski" <rgresume at gmail.com>
> To: "Pete Soper" <pete at soper.us>
> Cc: "Triangle Embedded Computing Discussion" <TriEmbed at triembed.org>
> Subject: [TriEmbed] bad news about decade resistor boards
> Date: Sat, Oct 15, 2016 9:31 AM
>
> It would probably cost less if you made them yourself, and that's
> including assembly!
> You could make them custom size, so that they fit the box of your choice.
> You could also use higher precision resistors (0.1% or better) for 1k,
> 10k, and 100k, to make your decade box even better.
> High precision resistors are expensive, but in bulk might not be that bad.
>
> On Sat, Oct 15, 2016 at 8:55 AM, Pete Soper via TriEmbed <
> triembed at triembed.org> wrote:
>
>> Just a few folks expressed interest in the decade board a while back. I
>> thought it might be more interesting mounted on a laser-cut acrylic base
>> and I wasted some time exploring these and other cute accessories. In the
>> meantime the price was jacked up to $14 +$3 shipping each. I searched
>> around and couldn't find the quantity five deal Paul pointed us too either.
>> I was going to just get a bunch on spec and coordinate with Jeff to offer
>> them in return for Splatspace donations. But at this price they're no
>> longer interesting. Here's the item in question:
>>
>> https://smile.amazon.com/Electronics-Salon-1R-9999999R-Progr
>> ammable-Resistor/dp/B01CZLPAOM/ref=lp_8937979011_1_3?srs=893
>> 7979011&ie=UTF8&qid=1476535329&sr=8-3
>>
>> -Pete
>>
>>
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>
>
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