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Lightspeed Attenuator a new passive preamp
Lightspeed Attenuator a new passive preamp
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Old 31st January 2019, 05:57 PM   #5691
georgehifi is offline georgehifi  Australia
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Quote:
Originally Posted by Nelson Pass View Post
I recall that the Lightspeed has a fair dose of 2nd....

Hey Papa how ya been mate, nothing get Pass'd you.

It can give up to .1% with 2v in

Cheers George
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Last edited by georgehifi; 31st January 2019 at 06:00 PM.
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Old 11th February 2019, 03:52 AM   #5692
soongsc is offline soongsc  Taiwan
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Sorry to interrupt this thread with an old subject. Does anyone have a diagram showing how Paul's VCCS light speed board connections are used? I see the input and output, but fail to understand how the plugged in terminals and test points are used.
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Old 13th February 2019, 03:03 PM   #5693
cyteen is offline cyteen  England
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Connections 1-6

1 (14) AGND
2 (16) Balance Left
3 (17) Balance Right
4 (18) Volume Down
5 (19) Volume Up
6 (20) Vcc

where the numbers in brackets are the corresponding pin numbers for the DS1802.

Test points TP1-4
* TP1 +15V
* TP2 +12V
* TP3 +8V3
* TP4 +3V3

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Lightspeed Attenuator a new passive preamp
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Last edited by cyteen; 13th February 2019 at 03:15 PM.
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Old 13th February 2019, 07:10 PM   #5694
cyteen is offline cyteen  England
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Putting four momentary switches between pins 2,3,4,5 and pin 1 will operate the functions.

Last edited by cyteen; 13th February 2019 at 07:13 PM.
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Old 13th February 2019, 10:01 PM   #5695
soongsc is offline soongsc  Taiwan
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Thanks cyteen, I was looking through my unfinished projects and discovered three main boards, so I am scratching my head trying to remember what I wanted to do with these. A quick search showed three different PCBs would be a set, so it further confuses me.
Now I am wondering whether I can get something to make a few sets and trying it out.
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Old 18th February 2019, 12:46 AM   #5696
cyteen is offline cyteen  England
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If you have three you could cascade them via each DS1802 pin2 to pin4 of the next chip.

There is also an arduino library for the DS1802 3-wire interface so adding a remote other than the extra boards from Paul Hynes wouldn't be difficult.

ArduinoLibraries DS1802
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