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Old 18th April 2011, 02:31 PM   #1771
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ok, so here is mine...
Nice but look like si-bi radio station =)
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Old 19th April 2011, 12:53 PM   #1772
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ok, so here is mine...
What design is that exactly?
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Old 19th April 2011, 05:18 PM   #1773
fotios is offline fotios  Greece
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ok, so here is mine...
Wow! My compliments sir
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Old 19th April 2011, 11:42 PM   #1774
kct is offline kct  Canada
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LOL thanks mate, 'si-bi radio station', that is a good one. You got it all wrong, it is a Toaster...

The basic design started out as a HPA by GMarsh and I just added a few extra features to it. Eventually I added more and more stuff until I run out of room. Features such as IR, servo volume control, a lot more inputs, LCD, VU Meter, QTouch ect.




Cheers
Attached Images
File Type: jpg _DSC02411.JPG (806.4 KB, 1223 views)
File Type: jpg _DSC02905.JPG (643.7 KB, 1130 views)
File Type: jpg _DSC04019.JPG (634.6 KB, 1051 views)

Last edited by kct; 19th April 2011 at 11:51 PM.
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Old 19th April 2011, 11:49 PM   #1775
jleaman is offline jleaman  Belgium
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Originally Posted by kct View Post
LOL thanks mate, 'si-bi radio station', that is a good one. You got it all wrong, it is a Toaster...

The basic design started out as a HPA by GMarsh and I just added a few extra features to it. Eventually I added more and more stuff until I run out of room.
Such as IR, servo volume control, a lot more inputs, LCD, VU Meter, QTouch ect.



Cheers
I want one
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Old 20th April 2011, 03:52 AM   #1776
fotios is offline fotios  Greece
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Quote:
Originally Posted by kct View Post
LOL thanks mate, 'si-bi radio station', that is a good one. You got it all wrong, it is a Toaster...

The basic design started out as a HPA by GMarsh and I just added a few extra features to it. Eventually I added more and more stuff until I run out of room. Features such as IR, servo volume control, a lot more inputs, LCD, VU Meter, QTouch ect.




Cheers
Nice looking volume control unit (2nd picture). I have seen for first time. Looking at the foot-print on the PCB (1st picture) it seems to be a motorized volume pot. Its brand? Thanks for any information.
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Last edited by fotios; 20th April 2011 at 04:00 AM.
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Old 21st April 2011, 12:34 AM   #1777
kct is offline kct  Canada
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Nice looking volume control unit (2nd picture). I have seen for first time. Looking at the foot-print on the PCB (1st picture) it seems to be a motorized volume pot. Its brand? Thanks for any information.
Thanks fotios, yes, it is motorized. The quadrature encoder is made by Bourns and the Aluminum (7075 alloy) is made by ALCOA and machined to my spec.
Of course it would have been much easier to skip the servo thing and just do the remote volume control by software however I wanted moving parts in there
because I like clockwork

Cheers
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File Type: jpg _DSC02909.JPG (641.2 KB, 867 views)
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Old 21st April 2011, 06:55 AM   #1778
fotios is offline fotios  Greece
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Originally Posted by kct View Post
Thanks fotios, yes, it is motorized. The quadrature encoder is made by Bourns and the Aluminum (7075 alloy) is made by ALCOA and machined to my spec.
Of course it would have been much easier to skip the servo thing and just do the remote volume control by software however I wanted moving parts in there
because I like clockwork

Cheers
Hmmm... So, is a custom made motorized encoder machined in a CNC milling machine. However, is a masterpiece of mechanical process. I like it very much, especially the ball bearing base .
I had in my mind a different approach (based on my preference of the absolute isolation of the analog and digital part) which i will realize when i will have money left over . My idea is the use of a stepper motor to drive a "Gold Point" (or something like this) rotary attenuator. I don't have problem with ALPS motorized pots, except that i prefer 1 - 2 KOhm track resistance which is not offered on the market.
BTW, the frame of my MTB (a 12 years old "GT Pantera") is made from 6061 aluminum tubes, is this alloy good?
Happy Easter to all
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Old 21st April 2011, 09:06 AM   #1779
AndrewT is offline AndrewT  Scotland
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the frame of my MTB (a 12 years old "GT Pantera") is made from 6061 aluminum tubes, is this alloy good?
a good alloy but not for a bike. Fatigue is the problem. Carbon and Titanium are very good for fatigue resistance, but they cost far to much to be classed as good.
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Old 21st April 2011, 06:05 PM   #1780
fotios is offline fotios  Greece
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And here is mine volume control and the mcu unit.
Instead of an encoder, i use a traditional ALPS Blue Velvet motorized pot which of the shaft is joined with the shaft of a second 1KΩ mono linear pot thru a "couplier". The two pots are rotated simultaneously from the motor of ALPS. The wiper of the mono pot, is connected at the RA0 analog input of the (really excellent) PIC16F887 and its voltage level (proportional to the rotation angle of ALPS) is translated thru the program code in percentage which in sequence is displayed on the LCD screen.
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File Type: jpg PRE VOL CONTROL1.jpg (105.1 KB, 461 views)
File Type: jpg PRE CONTROL 1 DAYLIGHT14m.jpg (440.8 KB, 323 views)
File Type: jpg PRE CONTROL 1 DAYLIGHT7m.jpg (447.0 KB, 272 views)
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