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Yet another Volume controlers and source selections
Yet another Volume controlers and source selections
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Old 23rd October 2016, 09:03 AM   #941
tvicol is offline tvicol  Europe
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Yet another Volume controlers and source selections Yet another Volume controlers and source selections
Yes, it's log and you may calculate different kinds of input impedances and resistor values, however step size is limited by relay numbers to 1dB/step.
Please note that our volume controller is designed with constant output impedance.

Regards,
Tibi

Last edited by tvicol; 23rd October 2016 at 09:06 AM.
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Old 23rd October 2016, 10:28 AM   #942
Morde is offline Morde  Finland
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Yet another Volume controlers and source selections
Quote:
Originally Posted by tvicol View Post
Yes, it's log and you may calculate different kinds of input impedances and resistor values, however step size is limited by relay numbers to 1dB/step.
Please note that our volume controller is designed with constant output impedance.

Regards,
Tibi
Thanks Tibi for your quick answer. Now I managed to find the discussions that have taken place in this thread. I just had misspelled the word "logarithmic".
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Old 18th November 2016, 02:18 PM   #943
chz is offline chz  Hungary
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Hello!
Ready ATMEGA 8515 Procion the preamplifier, which was presented at the first page. PHILIPS RC5 remote actuated, all functions twice a touch away. Did you see this problem? What could be the solution to it? Please, who knows sgítsen of improvement.
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Old 5th February 2017, 03:43 PM   #944
FarmTech is offline FarmTech  Denmark
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Send a message via MSN to FarmTech Yet another Volume controlers and source selections
Quote:
Originally Posted by chz View Post
Hello!
Ready ATMEGA 8515 Procion the preamplifier, which was presented at the first page. PHILIPS RC5 remote actuated, all functions twice a touch away. Did you see this problem? What could be the solution to it? Please, who knows sgítsen of improvement.

hi, did you fix the rc5 problem ?
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Old 10th February 2017, 04:35 PM   #945
chz is offline chz  Hungary
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We managed to solve it works fine. RC5 code remained, more features were added.

Last edited by chz; 10th February 2017 at 04:56 PM.
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Old 13th February 2017, 04:38 PM   #946
chz is offline chz  Hungary
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Modified HEX
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Old 11th August 2017, 03:04 AM   #947
hsj21 is offline hsj21
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Originally Posted by danzup View Post
Yes.
Hi, is it possible to use the ULN2003 IC instead of the relay to drive the transistors in the circuit?,
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Old 11th August 2017, 06:48 AM   #948
tvicol is offline tvicol  Europe
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Yet another Volume controlers and source selections Yet another Volume controlers and source selections
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Originally Posted by hsj21 View Post
Hi, is it possible to use the ULN2003 IC instead of the relay to drive the transistors in the circuit?,
ULN2003A is an array of seven npn darlington transistors. You may use this to drive relays directly and gain some PCB space and maybe reduce cost. However, you still need a microcontoller to drive ULN2003A. It is nonsense to use ULN2003A to drive transistors.

Regards,
Tibi
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Old 13th August 2017, 05:49 PM   #949
biturbo420 is offline biturbo420  Russian Federation
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Originally Posted by chz View Post
We managed to solve it works fine. RC5 code remained, more features were added.
hi, how did you learn remote controller?
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Old 14th August 2017, 02:19 PM   #950
chz is offline chz  Hungary
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Originally Posted by biturbo420 View Post
hi, how did you learn remote controller?

Program has been modified, inputs can be controlled by 1-6 buttons.
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