Remote control suggestions

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shane
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Remote control suggestions

Post by shane » Tue Mar 05, 2019 8:53 pm

I’m getting lazy in my old age, so I’m thinking of adding a remote control volume pot to my KEL84. I’ve found this on eBay, which also has the benefit of switching the mains on and off, but I’m not convinced about the quality of the pot. Any other suggestions, anyone?

https://rover.ebay.com/rover/0/0/0?mpre ... 3191521966
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Ray P
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Re: Remote control suggestions

Post by Ray P » Tue Mar 05, 2019 9:31 pm


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shane
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Re: Remote control suggestions

Post by shane » Tue Mar 05, 2019 10:11 pm

Saw that one and liked it, but over £100 all in put me off a bit! Am I right I’m thinking that Nick designed the board?
Being the world’s only egg-laying mammal, the duck-billed platypus has the distinction of being the only creature capable of making its own custard.

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Nick
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Re: Remote control suggestions

Post by Nick » Tue Mar 05, 2019 11:50 pm

shane wrote:
Tue Mar 05, 2019 10:11 pm
Saw that one and liked it, but over £100 all in put me off a bit! Am I right I’m thinking that Nick designed the board?
Yep.
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Mike H
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Re: Remote control suggestions

Post by Mike H » Wed Mar 06, 2019 2:42 pm

shane wrote:
Tue Mar 05, 2019 8:53 pm
but I’m not convinced about the quality of the pot. Any other suggestions, anyone?
That thar looks very like a servo-driven Alps pot, so OK if you like Alps pots. :D

I remember seeing about the servo drive option in Alps datasheet.
 
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Re: Remote control suggestions

Post by Mike H » Wed Mar 06, 2019 2:43 pm

DUH!! I've just seen in item title "ALPS", so there you go then. :lol:
 
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pre65
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Re: Remote control suggestions

Post by pre65 » Wed Mar 06, 2019 5:44 pm

You could use a servo motor and connect to the pot of your choice with two toothed pulleys and a cogged belt ?
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Re: Remote control suggestions

Post by Mike H » Fri Mar 08, 2019 5:20 pm

You know what I did think could use a spindle coupler (simpler!) however the control direction would then be "backwards"


And on the subject of spindle couplers, these seem to be like rocking horse droppings lately? I can remember getting packs of 5 from RS? But can't find them now? :shock:
 
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Re: Remote control suggestions

Post by pre65 » Fri Mar 08, 2019 5:32 pm

Mike H wrote:
Fri Mar 08, 2019 5:20 pm


And on the subject of spindle couplers, these seem to be like rocking horse droppings lately? I can remember getting packs of 5 from RS? But can't find them now? :shock:
This was the type I last used.

https://www.hificollective.co.uk/potent ... upler.html

Next time I'd use a piece of rubber (or similar) tube.
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Greg
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Re: Remote control suggestions

Post by Greg » Fri Mar 08, 2019 8:26 pm

pre65 wrote:
Fri Mar 08, 2019 5:32 pm
Next time I'd use a piece of rubber (or similar) tube.
I’ve found that provided you butt the two shafts closely together and get them properly aligned, adhesive heat shrink works really well.

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ed
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Re: Remote control suggestions

Post by ed » Fri Mar 08, 2019 8:30 pm

this just reminded me....when I was fiddling with the ldr shenanigins back in the day I also spent some time looking at digital pots....
I tried quite a few varieties but couldn't work out which was the most quiet of the bunch...I eventually got a reasonable veersion in a box but never did put together a one-size-fits-all module.I really must revisit this because I thought it had distinct possibilities. I tried:
CAT5113
AD5204/6
MCP4241
all driven by apple remote and alps EC11s
irpot-50.jpg
pp-inside-50.jpg
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Nick
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Re: Remote control suggestions

Post by Nick » Fri Mar 08, 2019 9:10 pm

I have been working on a design using this

https://www.njr.com/MUSES/series/MUSES72320.html

Seems to be generally blameless from what I can tell.
Resistance isn't futile it's V / I.

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Re: Remote control suggestions

Post by ed » Fri Mar 08, 2019 9:26 pm

that looks to be the DBs...certainly wasn't around when I was messing with them.....
that datasheet is going to derail me for the next few days........must resist this stuff...

the real problem for me is that it's purely DIY and not commercial so unless I actually use a particular gadget the attitude doesn't get fully engaged because I don't actually need it but it is an academic challenge.....
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shane
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Re: Remote control suggestions

Post by shane » Fri Mar 08, 2019 11:29 pm

Nice! This stuff is way beyond my abilities but I’m pleased to have started an interesting conversation. I pressed the button on the eBay kit, if the pot itself turns out to be unsuitable I can substitute a better one.
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Re: Remote control suggestions

Post by ed » Sat Mar 09, 2019 8:17 am

Nick wrote:
Fri Mar 08, 2019 9:10 pm
I have been working on a design using this

https://www.njr.com/MUSES/series/MUSES72320.html

Seems to be generally blameless from what I can tell.
blimey
I just did a more general google and that chip seems to be all over the place, very popular. Looks like I gave up that project at the wrong time as the stuff on diya seems to date to just after I was messing with digi volume.

I'm going to get one and have a fiddle, even if I don't need a pre-amp.
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