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Old 06-05-2021, 10:59 AM   #151
hk 40
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Im modding the two I have this way and adding digital pots so I can store settings and return at any time. I would like to add visual display of the knock and boost rise rate.




Regards
Hubert

Last edited by hk 40; 06-08-2021 at 02:00 PM..
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Old 06-11-2021, 05:16 AM   #152
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The pots I chose for the project Xicor X9102 (1kohm dpot) and a X9503 (50kohm dpot).




Regards
Hubert

Last edited by hk 40; 06-11-2021 at 05:31 AM..
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Old 06-11-2021, 05:51 AM   #153
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The application


A test circuit to run with the debug terminal.

Regards,
Hubert
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Old 06-11-2021, 12:46 PM   #154
hk 40
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BOM
Qty.
1 Xicor X9C102 1000 ohm digital pot
2 Xicor X9C503 50 kohm digital pot
1 39k ohm 1/4 watt resistors.
1 Jumper wire



You can also get a knock sensor with shielded wire already attached.
Regards
Hubert
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Old 06-15-2021, 08:09 AM   #155
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The 1000 ohm digital pots for each unit have arrived first. I can set a test circuit with code now.

Regards
Hubert
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Old 07-03-2021, 11:58 AM   #156
hk 40
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I just received the 50 Kohm pots. This BOM is taking a long time to get in. I have the general code figured out for analog devices dpots but need to tailor it specifically to the XICOR. Its amazing how long its taking to get the resistors in bulk. I hate radio shack fell off. It was a perfect place for little thru hole components and general IC's I could just walk in a buy over counter.



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Hubert
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