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#11 |
diyAudio Member
Join Date: Oct 2007
Location: Bucuresti
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And some pictures with the variant with atmega8515 and alps motor potentiometer build by alex_mm :
http://i26.tinypic.com/9j39dz.jpg |
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#12 |
diyAudio Member
Join Date: Oct 2007
Location: Bucuresti
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"Hello Danzup,
I would like to ask a question and I hope I'm not OT cause I've been OT in the "Ebay Hdam module" thread. Does your relay based ATT suffer from audible click in the speaker ( not the relay) ? Cause I have a similar ATT I bought off ebay, And It has audible on the speaker click at only 2 points in its attenuation range. " I give here the answer : no there are not such click or pop in speakers in my resistor r2r or shunt type volume . Because everything is done properly in soft and in pcb layout of the volume controller . Every up or down in volume attenuation is done in software by switching to max attenuation (mute ) for 2.... 6 ms (depending on the relay parameters !!! every type of relay have different time for settle ) and then applying the new value . Ok ? Last edited by danzup; 15th September 2009 at 08:22 AM. |
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#13 |
diyAudio Member
Join Date: Oct 2007
Location: Bucuresti
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A little history about all my realizations in volume controllers :
http://translate.google.ro/translate...state0=&swap=1 |
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#14 | |
diyAudio Member
Join Date: Nov 2007
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Quote:
This is the stupid question: So you mean to say that your ATT will momentarily mute in between relay transition? |
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#15 | |
diyAudio Member
Join Date: Oct 2007
Location: Bucuresti
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Quote:
This is what i have explained to you ! And if your kit purchased from e-bay is with atmel atmega I will write for you a new software if you give me the schematics . |
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#16 |
diyAudio Member
Join Date: Nov 2007
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#17 |
diyAudio Member
Join Date: Oct 2007
Location: Bucuresti
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And another type of volume/selection controller made by me in 2005 .
Who want the soft just ask . Used I2C port expander from Philips to command the relay PCF8574A .
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There are not better tube than 6P3S and 6N2P for my ears ! Last edited by danzup; 25th September 2009 at 02:21 PM. |
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#18 |
diyAudio Member
Join Date: Oct 2007
Location: Bucuresti
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@Pryanick
soft for Pga 2310 Pga 2311 Pga4311 with 6 inputs and with dB attenuation on LCD (the schematics are from Project nr. 2 )
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There are not better tube than 6P3S and 6N2P for my ears ! Last edited by danzup; 18th November 2009 at 03:01 PM. |
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#19 |
diyAudio Member
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Thank you danzup
I'll test it today in the evening |
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#20 |
diyAudio Member
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Hi
I tested firmware today One question I've got: why only +10db? Datasheet says that +31.5db max should be. Danzup, can you fix it please? Thank you. |
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