Finding parts?

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bzztbomb
Posts: 2
Joined: 18 Aug 2020, 17:43

Finding parts?

Post by bzztbomb » 18 Aug 2020, 17:47

I'm attempting to building a Gigatron using the PCB/BOM posted on the site. (Thank you for doing this BTW!! It's so nice of you guys!)

I'm having trouble tracking down the following parts at the moment:

4606X-R2R-103LF -- Resistor array for audio.. should I try using one of the 9 pin versions and just hack it?
MP062-E -- Clock crystal, are there easier to find replacements?

Thanks for any assistance!
Brian

walter
Site Admin
Posts: 84
Joined: 13 May 2018, 08:00

Re: Finding parts?

Post by walter » 18 Aug 2020, 17:58

bzztbomb wrote:
18 Aug 2020, 17:47
4606X-R2R-103LF -- Resistor array for audio.. should I try using one of the 9 pin versions and just hack it?
MP062-E -- Clock crystal, are there easier to find replacements?
You could leave out the resistor array, the Gigatron will still work, but will not have sound. You could solder the array yourself from individual resistors, see the data sheet. This will probably be very fiddly.

If you use a different clock, you might loose VGA output because the sync rates depend on the clock. There's other threads about this.

bzztbomb
Posts: 2
Joined: 18 Aug 2020, 17:43

Re: Finding parts?

Post by bzztbomb » 18 Aug 2020, 18:07

Thanks Walter!

I think I may have found a surplus spot with the crystals. There are here if anyone else is on the hunt for parts:
https://www.radwell.com/en-US/Buy/CTS%2 ... ON/MP062E/

I'll try building the resistor array and see what happens.

Thanks for such a quick response!

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