Anywhere to source crystals locally?

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Essobi

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Apr 26, 2012, 5:29:37 PM4/26/12
to LVL1 Hackerspace

Looking for a 14.7456 or 7.3728. Shadio rack seems to not carry any crystals according to their web page. :/

Essobi

JAC_101

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Apr 26, 2012, 8:15:13 PM4/26/12
to LVL1 - Louisville's Hackerspace
Try Scale Reproduction of Louisville off Breckenridge Road. They sell
hobby stuff including remote control items.

crei...@sdf.lonestar.org

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Apr 27, 2012, 12:05:55 AM4/27/12
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>
> Looking for a 14.7456 or 7.3728. Shadio rack seems to not carry any
> crystals according to their web page. :/


Why those? Can't decide between 20 or 40 meters?

Creighton

Essobi

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Apr 27, 2012, 11:21:43 AM4/27/12
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Wiring up a bare atmega328p. Those two have the best rs232 timing ranges.

Brad Luyster

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Apr 27, 2012, 12:37:46 PM4/27/12
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Unless you're hooking it up to something really picky, that probably
isn't too big of a deal. Any modern RS232 device will be able to deal
with a ~2% (or more!) timing discrepancy without any issues at all.
Unless you're doing it just for the novelty, in which case you're
going to have to hit up digikey or mouser.

Essobi

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Apr 27, 2012, 1:41:19 PM4/27/12
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Ya? How about rs-485? I'm swapping it over to a multidrop 485 once I'm done prototyping the rest of the hardware.

Essobi

Brad Luyster

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Apr 27, 2012, 1:52:35 PM4/27/12
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You're going to be better off using cheap RS485 transceiver, which
will simply output a TX/RX pair for your UART, so it's essentially
unchanged from the uC's perspective.
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