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My build log - missing parts, questions and suggestions

Posted: May 20th, '16, 09:09
by comboy
this is work in progress as I build...

- 100pf ceramic cap missing
currently at the BD. Mouser BOM lists 1 x 100pF ceramic. Noise needs one C47, BD also at C4

- MISO and MOSI switched at the ISP header

Re: Errors with the build I found

Posted: May 20th, '16, 09:31
by comboy
- pot labeling confusing (uncommon)

is a A-100k pot = 100.000 ohm = A1 04 ? the little marking on the bottom?

Re: Errors with the build I found

Posted: May 20th, '16, 09:33
by e-licktronic
comboy wrote: - 100pf ceramic cap missing
currently at the BD. Mouser BOM lists 1 x 100pF ceramic. Noise needs one C47, BD also at C4
In fact you need 5x 100pF capacitors. Mouser BOM updated, thank you for this advice. ;)
comboy wrote: is a A-100k pot = 100.000 ohm = A1 04 ? the little marking on the bottom?
Yes it is.

Best regards,
e-licktronic

Re: Errors with the build I found

Posted: May 20th, '16, 19:03
by comboy
1 x 20k missing.
I have only 4 x 20k from the mouser BOM

Re: Errors with the build I found

Posted: May 20th, '16, 21:21
by comboy
1 x 68k missing :(
only 2 are in the BOM, we need 3 for the 3 toms.


it's getting annoying :roll:

Re: Errors with the build I found

Posted: May 21st, '16, 07:39
by comboy
another thing.
why are no 0.1% 10k resistors used for the R2R DACs when all other values are 0.1% resistors?
Would save one from hand selecting the normal 1% 10k resistors with a multimeter.

Re: Errors with the build I found

Posted: May 21st, '16, 15:18
by e-licktronic
comboy wrote:another thing.
why are no 0.1% 10k resistors used for the R2R DACs when all other values are 0.1% resistors?
Would save one from hand selecting the normal 1% 10k resistors with a multimeter.
Mouser BOM updated

Best regards,
e-licktronic

Re: My build log - missing parts, questions and suggestions

Posted: May 21st, '16, 17:55
by comboy
I have plenty of 1k resistors left, but am missing nearly all 1k2 resistors from the sequencer.
havn't counted them yet but my guess is there are 1k instead of 1k2 resistors in the BOM.

Re: My build log - missing parts, questions and suggestions

Posted: May 21st, '16, 18:28
by comboy
1 x 100k missing

Re: My build log - missing parts, questions and suggestions

Posted: May 21st, '16, 20:51
by comboy
0.0022uF missing.
3 on the bom.
bd needs 1, sd needs 3

I feel like the first person to actually test the BOM :-/