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| Page 1 of 3 [52 Posts] | Goto page: 1, 2, 3 Next |
| Author | Message |
|---|---|
 Topic: The VCO-555 |
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| Alfredo Replies: 479 Views: 599601 |
Posted: Tue Feb 09, 2021 5:09 pm Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
| Hi, it is impossible to calibrate.
I set the vco to c then I put 1volt into the V/Oct input and adjust R1 to one octave up, ok to this point and repeat with 2V and tried to adjust R1 but can't, trimm ... |
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| Topic: The VCO-555 |
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| Alfredo Replies: 479 Views: 599601 |
Posted: Mon Feb 08, 2021 5:56 pm Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
| Ok will try with patience.
Where I must measure volts with the meter?pin 7 of IC3? Pin 1? Normally that is the Setting up procedure with others VCOs, play octaves or apply 1 volt and measure then a ... |
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| Topic: The VCO-555 |
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| Alfredo Replies: 479 Views: 599601 |
Posted: Mon Feb 08, 2021 4:01 pm Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
| Hi elmegil, thanks for your help!
That Calibration it does not work for My vco, if I play a note C in tune pair with other vco, the next note C# is out of tune! If I turn the R1 it lost the C intonat ... |
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| Topic: The VCO-555 |
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| Alfredo Replies: 479 Views: 599601 |
Posted: Mon Feb 08, 2021 2:49 pm Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
|
So: You said you do, or do not see the voltage changing on the wiper of the trimpot? What is the voltage at pin 7 of IC3 when you have no linear FM input? What about pin 1? Pin 1 shoudl swing a b ... |
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| Topic: The VCO-555 |
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| Alfredo Replies: 479 Views: 599601 |
Posted: Mon Feb 08, 2021 1:51 pm Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
| Hi, verified continuity in all the pcb tracks, everything seems correct...
White lines=Checked tracks. |
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| Topic: The VCO-555 |
|
| Alfredo Replies: 479 Views: 599601 |
Posted: Mon Feb 08, 2021 7:37 am Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
| Oh man, how could you make me understand? I think I do not explain myself correctly. I don't have enough knowledge to compare pcb and schematic, I can understand a simple schematic like this CGS DC mi ... | |
| Topic: The VCO-555 |
|
| Alfredo Replies: 479 Views: 599601 |
Posted: Mon Feb 08, 2021 4:37 am Subject:
Turning Trimmers
Forum: DIY Hardware and Software » Thomas Henry designs |
| Turning trimmers, first R1 works as is should, R36 don't do nothing. | |
| Topic: The VCO-555 |
|
| Alfredo Replies: 479 Views: 599601 |
Posted: Sun Feb 07, 2021 2:54 pm Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
| It looks to me as if R2 and R23 should be swapped around. At least according to the original schematic, R2 should go to ground and the trimmer R1, but it's going out to D1 and IC3-pin7 - as R23 should ... | |
| Topic: The VCO-555 |
|
| Alfredo Replies: 479 Views: 599601 |
Posted: Sun Feb 07, 2021 2:48 pm Subject:
The VCO-555
Forum: DIY Hardware and Software » Thomas Henry designs |
| Hello elmegil, thnaks for your answer. I scan the board with a desktop scanner and mirrored with photoshop, then I followed the tracks and drew them with a Sprint Layout software so the image of the t ... | |
| Topic: The VCO-555 |
|
| Alfredo Replies: 479 Views: 599601 |
Posted: Sun Feb 07, 2021 1:18 pm Subject:
Tuning issue
Forum: DIY Hardware and Software » Thomas Henry designs |
| I have this board that someone gave me for free. Look very similar to the Fonik one and sound fantastic, all potentiometers work as it should as well as the modulation inputs. Only problem is I can't ... | |
| Topic: 1984, a sequencer |
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| Alfredo Replies: 10 Views: 18030 |
Posted: Tue Dec 01, 2020 12:03 pm Subject:
1984 sequencer
Forum: DIY Hardware and Software » Arduino |
| Fantastic work Grumble, congratulations! I'm following this post from time to time, any progress? Will be very happy to build one if you share the project!
Best regards! |
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| Topic: M185 sequencer Project - NEW PCB VERSION |
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| Alfredo Replies: 1138 Views: 1134626 |
Posted: Sat Feb 22, 2020 3:53 am Subject:
CONGRATULATIONS RYKTNK
Forum: DIY Hardware and Software |
| ryktnk, this look fantastic man! This is the definitive front panel all black or there are an alternative in natural aluminium? Congratulations and thanks a lot. | |
| Topic: M185 sequencer Project - NEW PCB VERSION |
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| Alfredo Replies: 1138 Views: 1134626 |
Posted: Fri Dec 20, 2019 4:11 pm Subject:
Functionality
Forum: DIY Hardware and Software |
| Please ryktnk, can you describe the functionality of this new design? Thanks. | |
| Topic: M185 sequencer Project - NEW PCB VERSION |
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| Alfredo Replies: 1138 Views: 1134626 |
Posted: Tue Oct 01, 2019 10:51 am Subject:
Price.
Forum: DIY Hardware and Software |
| Great news mate, thanks a lot Ryk, approximate price? | |
| Topic: M185 sequencer Project - NEW PCB VERSION |
|
| Alfredo Replies: 1138 Views: 1134626 |
Posted: Mon Aug 12, 2019 4:20 pm Subject:
Thanks!
Forum: DIY Hardware and Software |
| Thanks a lot ryk great news!! All the best!! | |
| Topic: MFOS - Dual AR |
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| Alfredo Replies: 12 Views: 15558 |
Posted: Wed May 29, 2019 12:28 pm Subject:
MFOS - Dual AR
Forum: DIY Hardware and Software » The layout factory |
| D6 is not correct, you solder it backwards.
Oucht! Yeah isak My big mistake! 
I put the diode correctly and works smoothly, not the faster envelope on heart but cool! Now I need to get the ... |
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| Topic: MFOS - Dual AR |
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| Alfredo Replies: 12 Views: 15558 |
Posted: Mon May 13, 2019 1:17 pm Subject:
Voltages ok
Forum: DIY Hardware and Software » The layout factory |
| Hello, Voltages OK.
I will clean the board with alcohol. Some pics Both sides, think soldering is correct: Thanks a lot. |
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| Topic: MFOS - Dual AR |
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| Alfredo Replies: 12 Views: 15558 |
Posted: Sun May 12, 2019 4:33 pm Subject:
Voltage
Forum: DIY Hardware and Software » The layout factory |
| Hello isak thanks for your answer, all components are the correct ones and oriented correctly, about voltage don't know, I measure different voltages in the pins of the ICs, do you know what is the co ... | |
| Topic: MFOS - Dual AR |
|
| Alfredo Replies: 12 Views: 15558 |
Posted: Wed May 08, 2019 2:59 pm Subject:
Layout not working
Forum: DIY Hardware and Software » The layout factory |
Hello isak, your Layout is tested and not working, I did a pcb but does not work  |
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| Topic: M185 sequencer Project - NEW PCB VERSION |
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| Alfredo Replies: 1138 Views: 1134626 |
Posted: Mon Apr 01, 2019 3:23 pm Subject:
Re: Waiting
Forum: DIY Hardware and Software |
|
Hi sorry about that. It's a combination of my adding new functions to the project, then having to redisgn the PCB, and also having a day job ! Sorry me ryktnk, apologies for my impatience ... |
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| Topic: M185 sequencer Project - NEW PCB VERSION |
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| Alfredo Replies: 1138 Views: 1134626 |
Posted: Thu Mar 07, 2019 12:24 pm Subject:
Waiting
Forum: DIY Hardware and Software |
We are all impatient, waiting is taking very very long... 
(john travolta GIF on Modular Synth room) Iduno how to post an animated gif  |
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| Topic: M185 sequencer Project - NEW PCB VERSION |
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| Alfredo Replies: 1138 Views: 1134626 |
Posted: Fri Jan 25, 2019 9:55 am Subject:
Thanks
Forum: DIY Hardware and Software |
| Thanks for your answer ryktnk!
Please what´s new functionality of the new pcb design? Thanks you for your work, and best regards. |
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| Topic: M185 sequencer Project - NEW PCB VERSION |
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| Alfredo Replies: 1138 Views: 1134626 |
Posted: Fri Jan 18, 2019 11:28 am Subject:
Any news for the project
Forum: DIY Hardware and Software |
| Hello, any news for the project?
Thanks. |
|
| Topic: M185 sequencer Project - NEW PCB VERSION |
|
| Alfredo Replies: 1138 Views: 1134626 |
Posted: Tue Jan 08, 2019 12:12 pm Subject:
Happy New year
Forum: DIY Hardware and Software |
| Happy New Year ryktnk. I wish you all the Best for 2019!! | |
| Topic: The LFX experimental LFO (8K LFO and Weird Waveshapers) |
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| Alfredo Replies: 62 Views: 78007 |
Posted: Sun Dec 16, 2018 11:43 am Subject:
FINAL DESIGN PCB WITH WAVESHAPERS AND SYNC
Forum: DIY Hardware and Software |
| Hello! So there´s any final pcb design with Waveshapers and Sync function?
Thanks! |
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| Page 1 of 3 [52 Posts] | Goto page: 1, 2, 3 Next |
| Forum index » Search |
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