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Transposer selector switch

Buying or building computers for Hauptwerk, recommendations, troubleshooting computer hardware issues.
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engrssc

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Transposer selector switch

PostThu Jul 25, 2019 8:29 pm

was added to the church console for global transposition, ie:+/- 4 semitone range using a 9 position rotary selector switch. (home, no transposition in the center). The circuit, itself, works fine. There were various valid reasons for adding this feature. But there is a problem. If after raising (mostly the way it's being used) or lowering the pitch of the organ. The problem happens when the organist forgets to return the switch to the center/home position. Most noticeable when there is an organ and piano duet and the organ is a few semitones off from the pitch of the piano. My original plan was to use a 2 deck switch with one deck be used for the transposer ckt. The other deck for an indicator reminder for the organist to reset the trans switch.

Turns out there is barely enough room for the single deck. Had different suggestions from an annoying chime tone turning on a fan to blow air in the organist's face. :roll: Problem is I haven't figured out a way to turn such an indicator on. I'd probably install a flashing red LED like we have in the setter piston. Still need some sort of switch.So- - - - ?

Rgds,
Ed
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magnaton

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Re: Transposer selector switch

PostFri Jul 26, 2019 8:08 am

Is the transposition performed by the MIDI encoder or by Hauptwerk? If done by Hauptwerk you could auto detect the "0" from the transposer Mini display page to be in combined with the Gen Cancel piston. So Gen Cancel does 2 functions. This doesn't answer your question for an indicator light but would be a safe guard incorporated in.

Danny B.
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murph

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Re: Transposer selector switch

PostFri Jul 26, 2019 2:51 pm

Rather than an indicator, how about inserting a momentary switch in-line with the v+ supply to the switch?
Then it should only work once, when activated and default to HW normal the next time things are booted.
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engrssc

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Re: Transposer selector switch

PostFri Jul 26, 2019 6:37 pm

murph wrote:Rather than an indicator, how about inserting a momentary switch in-line with the v+ supply to the switch?
Then it should only work once, when activated and default to HW normal the next time things are booted.


The problem would still exist, for 1, the organ computer runs 24/7. And while one hymn may be an organ solo where the organist chooses to "bump" the pitch up a couple semi tones. Immediately followed by an organ/piano duet where the organ pitch should have been reset to the standard A 440 pitch.

While maybe not a very sophisticated solution, I'm thinking in terms of the switch controlling (remote) small Double pole relays, one per switch position. One pole of each relay controlling transposer ckt, while other pole would operate an indicator. The relay relating to the home (no transposition) switch position would not turn on the indicator. A little klutzy "solution ?" sort of. :roll:

Another non standard control function - each manual has the related pistons for the c/a etc, under the manual. But in addition there are 8ft intermanual lighted coupler pistons. So any coupler piston from the Swell manual is lit with a green LED (in the piston). Any coupler piston from the Choir manual is lit with a blue LED. Any manual to pedal coupler is lit with a yellow LED. This kinda solves the problem of which manual is coupled as these coupler piston are next to each other. Their function is duplicated in the coupler rail above the Swell manual using the same *"color code" arrangement. Only for the 8 ft couplers. The other couplers 4 ft, 16 ft,etc have white LEDs.

The next addition will be a crescendo position indicator using a 20 segment tri-color LED bargraph such as

https://www.ebay.com/itm/4-x-Tri-Color-Fixed-LED-Light-Bargraph-Array-20-Segs-for-Audio-LED-VU-Meter-USA/173362605659?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D58937%26meid%3D4bb7903895444e06b6ba6c787ff8a169%26pid%3D100290%26rk%3D1%26rkt%3D4%26sd%3D173362605659%26itm%3D173362605659%26pg%3D2060778&_trksid=p2060778.c100290.m3507#viTabs_0

Rgds,
Ed

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