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Custom MIDI controller using a real upright action
#2883056 08/24/19 02:02 PM
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Saw this on eBay yesterday:
https://www.ebay.com/itm/292892744768?ul_noapp=true

Looks interesting for the price (same price as a VPC1!). However, it uses an older sensor system which does not support half-pedaling. They said they could upgrade the sensors, which of course translates to a higher price.

There's also a video on the page that shows how they convert dilapidated acoustic pianos into digitals.

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Re: Custom MIDI controller using a real upright action
jon123 #2883057 08/24/19 02:21 PM
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Originally Posted by jon123
Saw this on eBay yesterday:
https://www.ebay.com/itm/292892744768?ul_noapp=true

Looks interesting for the price (same price as a VPC1!). However, it uses an older sensor system which does not support half-pedaling. They said they could upgrade the sensors, which of course translates to a higher price.

There's also a video on the page that shows how they convert dilapidated acoustic pianos into digitals.

Woah.... That's the CG project only with an upright...


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Re: Custom MIDI controller using a real upright action
jon123 #2883072 08/24/19 02:59 PM
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Indeed but I guess it’s a system similar to Pnoscan only under the keys.


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Re: Custom MIDI controller using a real upright action
jon123 #2883074 08/24/19 03:10 PM
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It's an old system made by QRS, who also makes PNOscan. The seller is also selling the system separately. As you can see in the listing, it's a pretty old system.

Re: Custom MIDI controller using a real upright action
jon123 #2883183 08/25/19 03:10 AM
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Does anyone know what kind of sensors are used in this mechanism?

Re: Custom MIDI controller using a real upright action
jon123 #2883236 08/25/19 08:29 AM
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Originally Posted by MacMacMac
Does anyone know what kind of sensors are used in this mechanism?

Yes, see the post right above yours. grin
Originally Posted by jon123
It's an old system made by QRS, who also makes PNOscan. The seller is also selling the system separately. As you can see in the listing, it's a pretty old system.


Re: Custom MIDI controller using a real upright action
jon123 #2883259 08/25/19 09:24 AM
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Yes, I saw PNO brand. But ... what kind of sensors are those?

Re: Custom MIDI controller using a real upright action
MacMacMac #2883318 08/25/19 12:20 PM
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Originally Posted by MacMacMac
Yes, I saw PNO brand. But ... what kind of sensors are those?

I guess you missed the link I posted:
https://www.ebay.com/itm/KS-1B-MIDI...4?hash=item44427bd1c6:g:BeIAAOSwimddQjtb

They're optical. The keys push down a lever that blocks a light beam. I imagine the sensor determines the position of the key based on the amount of light that is being blocked.

Re: Custom MIDI controller using a real upright action
jon123 #2883320 08/25/19 12:25 PM
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And the modern version does not use any springy levers:

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