Project PRO2021 - A Pro-One keyboard synth

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Altitude909
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Altitude909 » Wed Feb 12, 2020 4:35 pm

Kevin Mitchell wrote:
Wed Feb 12, 2020 2:28 pm
:lol: :lol: :lol: perfect.

I'm going to hit the hardware store. If they stock the thinnest walled 1/4 brass tubing I should be in business 👍

-KM
dont bother, i've looked at all available stock sizes and there isnt anything there, you either have to have it custom drawn or ream it out (I did that for a bit, it sucked). Youre talking about something with a wall thickness of 0.006", even if you could find a tube that size, good luck cutting it.

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Kevin Mitchell
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Kevin Mitchell » Wed Feb 12, 2020 6:38 pm

Edit; never mind lol
Last edited by Kevin Mitchell on Wed Feb 12, 2020 7:02 pm, edited 1 time in total.

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Altitude909
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Altitude909 » Wed Feb 12, 2020 6:51 pm

Once you make up the diameter difference, thats pretty much it, you dont have to deal with the D portion of it

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Kevin Mitchell
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Kevin Mitchell » Wed Feb 12, 2020 6:58 pm

Altitude909 wrote:
Wed Feb 12, 2020 6:51 pm
Once you make up the diameter difference, thats pretty much it, you dont have to deal with the D portion of it
Duh :hmm:

The pot shafts have a little play I thought it was still not centered.

The straw method is verified lol. Though not perfect - it's much better. Great tip! Also - rotaries don’t seem to need them.

-KM
Last edited by Kevin Mitchell on Thu Feb 13, 2020 12:00 pm, edited 1 time in total.

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Kevin Mitchell
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Kevin Mitchell » Thu Feb 13, 2020 11:59 am

Unintentional post...

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synthcube
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by synthcube » Fri Feb 14, 2020 1:39 pm

we have these awesome little brass bushings that adapt a 6mm shaft to 6.35mm -- mostly used for people who have knurled shaft 6mm pots and want to use round shaft 6.35mm knobs

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gslug
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by gslug » Fri Feb 21, 2020 9:33 am

Mine has arrived. Looks great, but sadly USPS/Parcelforce don't seem to have treated it well - keybed and top case damaged, despite good packaging. :waah:
One day I'll get an avatar!

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Kevin Mitchell
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Kevin Mitchell » Fri Feb 21, 2020 5:23 pm

Received the rest of the hardware today. All seems good!

Not sure if SC acknowledged my note on the keybed cable length. 8” will not reach and needs to be much longer to have it connected while the chassis is open for calibration.
No need to send me one.

Thanks for all the work on getting this thing situated.

-KM

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devinw1
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by devinw1 » Sat Feb 22, 2020 5:53 pm

Awesome news on the hardware!

Re: the keyboard cable, i'll have to see where this 8" came from. I'm not sure I ever specifified a length on that, because on the 2 prototypes I built I used keybeds purchased from TechMechs synth and they came with the longer cable, which I believe is 50cm (~19"). I think there are only a couple or few choices of preterminated cables from Fatar though, so it will just be a matter of Synthcube getting the right ones next time.

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Re: Project PRO2021 - A Pro-One keyboard synth

Post by gslug » Sat Feb 22, 2020 10:31 pm

Managed to bend back the deformed part of my top case (one of the end flanges), and Synthcube are sending me a new keybed, so all good! Haven't had a chance to check the hardware, but I think everything is there. My keyboard cable is short though.
One day I'll get an avatar!

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Kevin Mitchell
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Kevin Mitchell » Mon Feb 24, 2020 10:09 am

Twas a long weekend :sb:
Current status - added more zip ties, eyed out keybed cable length. About 2' is perfect for how I have the chassis held open - it's being held up by the lower chassis, propped up by a book and leaning against the parts drawer/back wall.

First start up seems good! Power supply is golden. Though somehow I wired/soldered the power LED leads backwards. The micromatch connectors for the keybed cable should be in on Wednesday. In the meantime I think I'll hook up my keystep and see if this thing makes any noises.

YES I'M ON STEP ONE OF CALIBRATION :hail:

A couple minor correction for the build guide; Sent Devin a PM.

Updated with some build notes;
Other than a philips you'll need a T15 driver (for keybed screws) and a 3/32" hex driver (for end cheeks)

A crimping tool is necessary.
The wires within the shielded cable SC had provided are too small to stay snug in the terminals. I had to solder each one to ensure a connection and also so they don't slide out - my crimping tool only goes down to 28-24 AWG which wasn't small enough. BOM says grey 26AWG - not sure what gauge the black cable I was sent is - probably 28 or 30. Will confirm.

I've found it best to not use the dust covers. SC was nice enough to send some plastic ones (4 short however) but the 3 position switches on the left tend to get stuck and push against each other rather than lap over each other. I already had the felt ones on hand and they seem to stretch and distort. The switches feel and operate better without them.

I'd screw on the keybed last (after end cheeks) since you may need room to hand adjust the clip-on nuts for the end cheeks. They can be a PITA and get pushed open if they aren't aligned correct. If they bend open you'll have to remove them and pinch them back snug with pliers.

-KM
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Last edited by Kevin Mitchell on Mon Feb 24, 2020 2:49 pm, edited 10 times in total.

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devinw1
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by devinw1 » Mon Feb 24, 2020 11:28 am

Awesome!

Hey Kevin, yes please send me the bugs in the build documentation and I'll get it fixed up!

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Kevin Mitchell
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Re: Project PRO2021 - A Pro-One keyboard synth

Post by Kevin Mitchell » Mon Feb 24, 2020 3:09 pm

PM sent.
Also - in case MTG ever wonders where the smiley turbo CPU landed :lol:
Appreciate the small things.

Be back later in the week with a finished build. Or... you know :hmm:

-KM
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