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Old 20th April 2006, 01:53 AM   #1
jkeny is offline jkeny  Ireland
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Default Remote Control ALPS pot

I managed to salvage this pot from a music centre system.

Problem is I dont know how to connect it as a manual pot - there are eight connectors going to the pot (seen on the underside of the board as the eight solder pads at the spidle end). There seems to also be two connections to the stepper motor (cylinder at back of pot)

I've searched but found no Alps pots with eight connectors - also tried to test with multimeter to check resistance of the connections with spindle rotation but so far no brekthrough.

Anybody know of or seen this part before?

John
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Old 20th April 2006, 02:06 AM   #2
jkeny is offline jkeny  Ireland
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Here's image of top
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File Type: jpg alps pot 002 (4).jpg (28.9 KB, 503 views)
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Old 20th April 2006, 02:08 AM   #3
jkeny is offline jkeny  Ireland
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Image of bottom
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File Type: jpg alps pot 004 (2).jpg (38.7 KB, 441 views)
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Old 20th April 2006, 05:42 AM   #4
Nisbeth is offline Nisbeth  Denmark
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It's an Alps RK16812MG, if you google that you'll find the datasheet



/U.
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Old 20th April 2006, 10:12 AM   #5
jkeny is offline jkeny  Ireland
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Thanks Nisbeth - I don't know why I didn't query it here in the first place.

Any idea how it is rated sonically?

John
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Old 20th April 2006, 12:45 PM   #6
jkeny is offline jkeny  Ireland
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What chances of getting the remote section of this working?
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Old 20th April 2006, 12:46 PM   #7
jkeny is offline jkeny  Ireland
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I've also salvaged a nice Noble pot from a Sony DAT recorder DTS1000ES
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Old 20th April 2006, 08:10 PM   #8
Nisbeth is offline Nisbeth  Denmark
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Quote:
Originally posted by jkeny
What chances of getting the remote section of this working?
Hmm, depends. The pictures aren't really clear enough to tell what's what on the PCB. If you can trace what's in and out from the pot, then you'll know how many terminals you have left over. I'm guessing you'll have +5V, GND and an IR input (typically from a TSOP-style IR receiver/decoder) This is of course assuming the complete decoder for the remote signals are located on this board and not somewhere else in the device. If this is the case, a new receiver chip and a couple of passives should then be enough to get it working again.


Quote:
Originally posted by jkeny
Any idea how it is rated sonically?

John
I'd say slightly lower than the blue RK27, but it's still excellent for a chipamp or a small class D system for kitchen/office/bedroom use


/U.
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Old 25th April 2006, 06:19 AM   #9
dangus is offline dangus  Canada
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Isn't that just a regular electric motor driving it? The brains of the system probably just fed it from an H-bridge to make it go one way or the other.
The easiest way to control it would be to use the guts of a toy remote controlled car. Forward makes the volume go up, reverse makes it go down.
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Old 29th April 2006, 02:46 AM   #10
jkeny is offline jkeny  Ireland
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Dangus,
Good suggestion - now to find a remote control car for salvage - watch out kids.
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