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 Forum index » DIY Hardware and Software » Thomas Henry designs
The Thomas Henry Mega Percussive Synthesizer
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Floppy



Joined: May 09, 2008
Posts: 64
Location: Berlin
Audio files: 2

PostPosted: Thu Mar 18, 2010 11:55 am    Post subject: Reply with quote  Mark this post and the followings unread

until the wiring i just used the BOM to build the MPS.
now i have no clue how to proceed with all the J´s.
is there a manual where the wiring is explained ?
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kkissinger



Joined: Mar 28, 2006
Posts: 1214
Location: Kansas City, Mo USA
Audio files: 29

PostPosted: Thu Mar 18, 2010 1:46 pm    Post subject: Reply with quote  Mark this post and the followings unread

Note that pin #1 is denoted with a square pad.


J11

1) +V
2) Gnd
3) Gnd
4) -V

J12

1) -V
2) Gnd
3) +V

J13

1) unusued
2) R84 Top

J14

1) Impact Send
2) R97 Center
3) R96 Center
4) R38 Top
5) R95 Center
6) R37 Top
7) LP/BP switch - Pole
Cool Noise Send

J15

1) R80 Center
2) R80 Top
3) LED - Cathode
4) LED - Anode
5) R38 Center
6) R84 Center
7) R39 Center
Cool R85 Center

J16

1) R83 Top
2) Shell Send
3) R81 Bot
4) R81 Center
5) LP/BP switch -- BP
6) R78 Top
7) R78 Center
Cool R78 Bot

J17

1) R82 Bot
2) R82 Center
3) R40 Center
4) R41 Center
5) R42 Center
6) R43 Top
7) (Snth?? -- not sure, not using it)
Cool R83 Center

J18

1) R36 Bot
2) R36 Top
3) R36 Center
4) Trigger In
5) R79 Bot
6) R37 Center
7) R79 Center
Cool R39 Top

J19

1) +V
2) Gnd

J20

1) Gnd
2) Gnd

J21 (not on my board but may be...)

1) Opt Noise CV
2) Opt impact CV

R78, R79, and R81 do not connect to ground instead they connect to V+

R80 and R84 do not connect to ground -- they connect to V-.

Note that the three decay pots: R95, R96, and R97 only use two pins... the outside pin to ground, and the middle as noted above.

Hope this helps.

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http://kevinkissinger.com
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Floppy



Joined: May 09, 2008
Posts: 64
Location: Berlin
Audio files: 2

PostPosted: Thu Mar 18, 2010 11:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

thank you kevin.
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Eraser127



Joined: Apr 20, 2010
Posts: 16
Location: Dordrecht, The Netherlands

PostPosted: Tue Apr 20, 2010 12:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

Maybe a worthless kick but two post above is stated for the potmeter lugs top/center/bottom. I'm into wiring the pots now, but can't figure out which wire onto which potmeter lug. Does top/center/bottom have to do with the orientation of the pots in the schematics (sheet 1 to 4)?

Thanks,
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kkissinger



Joined: Mar 28, 2006
Posts: 1214
Location: Kansas City, Mo USA
Audio files: 29

PostPosted: Tue Apr 20, 2010 12:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

The "top" is the leftmost lug when viewed from behind the panel.
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Eraser127



Joined: Apr 20, 2010
Posts: 16
Location: Dordrecht, The Netherlands

PostPosted: Tue Apr 20, 2010 12:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

Ah ok, so the orientation of the pots is all with lugs down and viewed from behind? Or is your list specifically for a certain panel?
_________________
3630 Compressor | BCR2000, Ultrapatch Pro PX2000 | DR-220E | GX-700 | FX57 | Xboard25 | Small Clone, Small Stone, Big Muff, Electric Mistress Deluxe | Juli@, M8U | UE400 | Poly-61 (custom midi), 05R/W | Rokit RP-5 | MB33 | Nova, KS-Rack | MWR-01 MetalWorker | R8, MKS-50, PG-300, M-VS1, M-DC1, JP-8080, Juno-106, JX8P, PG-800 | Topaz Macro Plus | E816S | Cubase 5 | Softsynths | TH MPS | Pulse+Rekon Editor | AN1X
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kkissinger



Joined: Mar 28, 2006
Posts: 1214
Location: Kansas City, Mo USA
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PostPosted: Tue Apr 20, 2010 12:27 pm    Post subject: Reply with quote  Mark this post and the followings unread

Eraser127 wrote:
Ah ok, so the orientation of the pots is all with lugs down and viewed from behind?


Correct!

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jumunius



Joined: Apr 19, 2010
Posts: 346
Location: San Francisco, CA
Audio files: 13

PostPosted: Sun Apr 25, 2010 1:26 pm    Post subject: power supply Reply with quote  Mark this post and the followings unread

Hi, I'm building the MPS right now and am seeking a power supply. I know there was the Power One discussed here, but it is out of stock everywhere (?) and Mouser predicts it won't be shipping until September.

I want a pre-built power supply if possible, as I am somewhat new to DIY (have built PAiA but you don't have to shop for those!). Any suggestions?

Incidentally, I am somewhat wary of Mouser's data, as they claim the Power One HAA15-0.8-AG that people suggested is +/-12v. http://tinyurl.com/2angxtg What gives?
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BananaPlug



Joined: Jul 04, 2007
Posts: 302
Location: Philly
Audio files: 5

PostPosted: Sun Apr 25, 2010 6:36 pm    Post subject: Reply with quote  Mark this post and the followings unread

If you Google for HAA15-0.8-AG you'll get the data sheet which explains that this supply may be wired for +/-12V or +/-15V.
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jumunius



Joined: Apr 19, 2010
Posts: 346
Location: San Francisco, CA
Audio files: 13

PostPosted: Sun Apr 25, 2010 10:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

BananaPlug wrote:
If you Google for HAA15-0.8-AG you'll get the data sheet which explains that this supply may be wired for +/-12V or +/-15V.


Ah, I see. Thanks for the clarification. I'll give Mouser a break then. Wink
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BananaPlug



Joined: Jul 04, 2007
Posts: 302
Location: Philly
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PostPosted: Mon Apr 26, 2010 5:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Having that choice makes it kind of the perfect option for modulars. Covers all the formats.
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jumunius



Joined: Apr 19, 2010
Posts: 346
Location: San Francisco, CA
Audio files: 13

PostPosted: Mon Apr 26, 2010 7:25 am    Post subject: Reply with quote  Mark this post and the followings unread

Oh rub it in, why don't you! 15v or not, nobody lists any as ready to ship. Confused
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BananaPlug



Joined: Jul 04, 2007
Posts: 302
Location: Philly
Audio files: 5

PostPosted: Mon Apr 26, 2010 8:06 am    Post subject: Reply with quote  Mark this post and the followings unread

There's some promising offers on ebay. Just put HAA15 in the search box.
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jumunius



Joined: Apr 19, 2010
Posts: 346
Location: San Francisco, CA
Audio files: 13

PostPosted: Mon Apr 26, 2010 9:37 am    Post subject: Reply with quote  Mark this post and the followings unread

Thank you! I don't remember what my search criteria was, but I came up wildly different results.
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Eraser127



Joined: Apr 20, 2010
Posts: 16
Location: Dordrecht, The Netherlands

PostPosted: Mon Apr 26, 2010 11:05 am    Post subject: Reply with quote  Mark this post and the followings unread

I've made the power-supply from this site on a piece of pcb with "3-hole" strips. I just changed the 7812 and 7912 for the 7815 and 7915. It works excellent I get a nice +15V, GND and -15V.

Here's my drawing of the print (every "thick" pencil square is 3 3-hole strips stacked)

On the left side you connect the AC adapter and on the right side you have the +, _ and GND output


print.jpg
 Description:
from 15VAC to +15V, -15V and GND
 Filesize:  274.53 KB
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This image has been reduced to fit the page. Click on it to enlarge.

print.jpg



_________________
3630 Compressor | BCR2000, Ultrapatch Pro PX2000 | DR-220E | GX-700 | FX57 | Xboard25 | Small Clone, Small Stone, Big Muff, Electric Mistress Deluxe | Juli@, M8U | UE400 | Poly-61 (custom midi), 05R/W | Rokit RP-5 | MB33 | Nova, KS-Rack | MWR-01 MetalWorker | R8, MKS-50, PG-300, M-VS1, M-DC1, JP-8080, Juno-106, JX8P, PG-800 | Topaz Macro Plus | E816S | Cubase 5 | Softsynths | TH MPS | Pulse+Rekon Editor | AN1X
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Eraser127



Joined: Apr 20, 2010
Posts: 16
Location: Dordrecht, The Netherlands

PostPosted: Tue May 04, 2010 1:03 am    Post subject: Reply with quote  Mark this post and the followings unread

I assume all the V+, V-/GND to the potmeters can be wired thru from one point of the pcb? I'm into wiring now, what a job Razz

I also found a fault in the kkissinger scheme:

it says:

J18

1) R36 Bot
2) R36 Top
3) R36 Center

But when I look in the schematics I see that the wiper from R36 is connected to switch S1. And the pole from that switch should be connected to J18/3.

Am I correct?

_________________
3630 Compressor | BCR2000, Ultrapatch Pro PX2000 | DR-220E | GX-700 | FX57 | Xboard25 | Small Clone, Small Stone, Big Muff, Electric Mistress Deluxe | Juli@, M8U | UE400 | Poly-61 (custom midi), 05R/W | Rokit RP-5 | MB33 | Nova, KS-Rack | MWR-01 MetalWorker | R8, MKS-50, PG-300, M-VS1, M-DC1, JP-8080, Juno-106, JX8P, PG-800 | Topaz Macro Plus | E816S | Cubase 5 | Softsynths | TH MPS | Pulse+Rekon Editor | AN1X
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kkissinger



Joined: Mar 28, 2006
Posts: 1214
Location: Kansas City, Mo USA
Audio files: 29

PostPosted: Tue May 04, 2010 11:45 am    Post subject: Reply with quote  Mark this post and the followings unread

Eraser,

I'll have to take a look. There are a few options for wiring and switches and in some cases I just followed the schematic.

Indeed, you can use a single point to connect the +/- voltages and ground from the panel to the PCB.

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Eraser127



Joined: Apr 20, 2010
Posts: 16
Location: Dordrecht, The Netherlands

PostPosted: Tue May 04, 2010 12:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

Ah ok, i followed your guide and did the rest thru the schematics, it makes sound now Very Happy I only wired some pots wrong like rotate cw is off instead of on Razz
_________________
3630 Compressor | BCR2000, Ultrapatch Pro PX2000 | DR-220E | GX-700 | FX57 | Xboard25 | Small Clone, Small Stone, Big Muff, Electric Mistress Deluxe | Juli@, M8U | UE400 | Poly-61 (custom midi), 05R/W | Rokit RP-5 | MB33 | Nova, KS-Rack | MWR-01 MetalWorker | R8, MKS-50, PG-300, M-VS1, M-DC1, JP-8080, Juno-106, JX8P, PG-800 | Topaz Macro Plus | E816S | Cubase 5 | Softsynths | TH MPS | Pulse+Rekon Editor | AN1X
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jumunius



Joined: Apr 19, 2010
Posts: 346
Location: San Francisco, CA
Audio files: 13

PostPosted: Tue May 11, 2010 9:11 pm    Post subject: capacitor tolerance Reply with quote  Mark this post and the followings unread

Hi, I am in the home stretch of my MPS board and had to buy one last .01uf ceramic to fill in C8. I accidentally ordered 20% tolerance, and it lead me to wonder what tolerances were acceptable for this projects, and what are acceptable in general. My other .01uf ceramics are 10% tolerance on here -- are those tolerances ok? I don't know how precise this needs to be.

I hope this is ok, because I am so ready to finish this and use the darned thing!
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Col



Joined: May 19, 2010
Posts: 1
Location: Australia

PostPosted: Wed May 19, 2010 6:51 am    Post subject: MPS connections Reply with quote  Mark this post and the followings unread

Almost finished with my MPS, just need to wire it up.

I have a rev 107 board. Ive gone through the many pages of this thread and found:
mps_connections_v1_133_2_335.pdf
mps_connections_v1_133_877.pdf
mps_layout_111.jpg

It looks like these are for rev 106 boards.

Ive noticed J20 and J21 have been removed on rev 107 (lucky for me, id already done my panel based on the block diagram, so no noise cv)

Are all the other connections the same on rev 107 boards - e.g. can i just wire it up as per one of the pdfs and drop the additional 100kB CV pot and jack?

Oh which of those two pdfs is more recent?

Thanks - C
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oneoff



Joined: Nov 23, 2008
Posts: 43

PostPosted: Tue Jun 01, 2010 6:46 am    Post subject: my standalone MPS version Reply with quote  Mark this post and the followings unread

Posted Image, might have been reduced in size. Click Image to view fullscreen.

this is actually the second version..
the first one was this:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

more pictures and info in my blog:
http://noisedesign.blogspot.com/
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Eraser127



Joined: Apr 20, 2010
Posts: 16
Location: Dordrecht, The Netherlands

PostPosted: Sat Jun 26, 2010 7:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Alright, finished my MPS in a temporary housing Razz:

[img]http://www.synthforum.nl/forums/attachment.php?attachmentid=58155&d=1273059660[/img]

I'm trying to add midi so I found a simple pic project (midi to pulse):

http://chip.aeug.org/midi4_0.asm

The thing is that this is for the PIC16c84. I have the PIC16F84, I converted the .asm with mplab to hex for the 16f84 but it gives a message:
Quote:
Message[302] C:\blabla\COPY OF MIDI4_0.ASM 153 : Register in operand not in bank 0. Ensure that bank bits are correct.
Message[302] C:\blabla\COPY OF MIDI4_0.ASM 155 : Register in operand not in bank 0. Ensure that bank bits are correct.
Message[302] C:\blabla\COPY OF MIDI4_0.ASM 157 : Register in operand not in bank 0. Ensure that bank bits are correct.


I assume that's why the pic doesn't work. In the asm file these are the lines that give a message:

Quote:
movwf OPTION_REG ;/
movwf TRISA
movwf TRISB


Found this with google:
Quote:

My source assembles with the following message: Message[302] myfile.ASM 136 :Register in operand not in bank 0. Ensure that bank bits are correct.

What am I doing wrong? This isn't an error, but it obviously means that something doesn't look right to mpasm and I am not trying to do anything unusual at all. Answer:

Its just a warning that you need to select the correct bank since you are addressing a Register over 0x7F, however, even if you have inserted the banksel command, you will still get the same warning (not an overly intellegent assembler here).

Can anyone help me with this? Maybe someone who knows his way with pic programming? Maybe it's a simple as changing some commands in the actual program but I have no experience with this.

I can buy a complete print http://www.engineersatwork.nl/catalog/product_info.php/cPath/58/products_id/536 but i'm already this far so only when I absolutely have to i'll buy that one.

HELP

_________________
3630 Compressor | BCR2000, Ultrapatch Pro PX2000 | DR-220E | GX-700 | FX57 | Xboard25 | Small Clone, Small Stone, Big Muff, Electric Mistress Deluxe | Juli@, M8U | UE400 | Poly-61 (custom midi), 05R/W | Rokit RP-5 | MB33 | Nova, KS-Rack | MWR-01 MetalWorker | R8, MKS-50, PG-300, M-VS1, M-DC1, JP-8080, Juno-106, JX8P, PG-800 | Topaz Macro Plus | E816S | Cubase 5 | Softsynths | TH MPS | Pulse+Rekon Editor | AN1X
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Blue Hell
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Joined: Apr 03, 2004
Posts: 20536
Location: The Netherlands, Enschede
Audio files: 147
G2 patch files: 318

PostPosted: Sat Jun 26, 2010 7:44 am    Post subject: Reply with quote  Mark this post and the followings unread

The messages just mean that you need to check if the bank bits are set up correctly, looking at :

Code:
   bsf     STATUS,RP0      ;Set up controls regs
   movlw   b'00000010'     ;Set TMR0 prescaler = 1:8 (f_osc=8MHz)     
   movwf   OPTION_REG      ;/
   movlw   b'0000'         ;Port A all outputs
   movwf   TRISA
   movlw   b'11111111'     ;Port B all inputs (only RB7 used)
   movwf   TRISB
   bcf     STATUS,RP0      ;Back to normal


It looks like this is the case, if there would be two register banks the topmost would be selected beforehand with the

Code:
bsf     STATUS,RP0


instruction. If however there are more than two register banks it might not be the topmost that gets selected .. the data sheet will tell you how many RAM (file) register banks there are.

Anyway, this bit of code is setup only so non time critical, so you could add a couple of instructions there if needed.

Another common reason for a processor to not work would be that the xtal oscillator does not run. This could be caused by the xtal itself having built in capacitors and the capacitors around it as drawn in the schematic being present as well .. easiest thing would be to look with a scope at the xtal connections to see if it actually oscillates.

Oh there is another common reason ... the F devices need some configuration bits to be set up properly ... like the oscillator will probably be have to set into HS mode, looking at the code the watchdog should likely be turned off .. stuff like that ... and I didn't see any CONFIG statements in the asm file ... meaning that the config will have to be set correctly manually, either in the programmer or in MPASM.

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Blue Hell
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Joined: Apr 03, 2004
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PostPosted: Sat Jun 26, 2010 7:46 am    Post subject: Reply with quote  Mark this post and the followings unread

oops ... the config should be arranged for with

Code:
   __FUSES _CP_OFF & _WDT_OFF & _XT_OSC & _PWRTE_ON



had missed that one.

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Danno Gee Ray



Joined: Sep 25, 2005
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Location: Telford, PA USA

PostPosted: Sun Jun 27, 2010 11:55 am    Post subject: Reply with quote  Mark this post and the followings unread

Oneoff, Nice build. Would it be possible to post a full on photo of the faceplate? Just curious how you configured it.

Thanks,

Danno
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