[connect 8x8 led matrix with only 16 pins?]

How can i connect this to the dout module?

http://www.ebay.com/itm/250910900835?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

[Synt shop or museum in Berlin?]

Thanks for the tips!

[Synt shop or museum in Berlin?]

I go to Berlin in November, can anyone recommend me a synth shop, museum or exhibition. Or something else fun?

[midibox sid stereo setup - drum and lead at same time?]

If I have the midibox sid stereo setup (2 sid chips) can I play drum och the LEAD at the same time?

If so can I split the midikeyboard or Can I two midikeyboards?

[Dealextreme midi-interface]

I seen this interface on DE and on ebay

http://www.dealextreme.com/p/usb-to-midi-cable-with-16-midi-input-output-channels-1-8-meter-11277

Has anyone got it working?

[I reversed the polarity on my core module to J2]

I reversed the polarity on the core module directly to the J2 pins.

Where do I start to troubleshoot, what componets do you think are dead.

I had every IC in pic and Optocoupler and also a display.

What parts do you think is borken:

• 
  
  
• resitors
  
• capacitors
  
• electrolytic capacitors
  
• PIC18F4685
  
• Optocoupler 6N138
  
• Diode
  
• TrimPot
  
• Crystal
  
• PCB?
  
• LCD
  
  

The volatge was correct but polarity wrong.

Now I got some strange chars on the display.

http://imageshack.us/clip/my-videos/534/hqg.mp4/

Where do I start?

[+5VDC drops to +1.7VDC with c64 when connecting core8 module]

Thanks for your help, now I know what was wrong. I had wrong polarity to J2

I putted the pic and opto in the sockets with wrong polarity! :cry:

I was fooled by the left + on the picture

http://mbhp.avishowtech.com/images/core/coreR4DETAILJ2.gif

and I missed +/- on my multimeter, when I checked on the points.

Very stupid!!

Now when I connect the power with right polarity the background light of the display is lighten up.

But the display is displayling some squares and then it disepears.

Do you think the core8 is bricked when I switched the polarity?

[+5VDC drops to +1.7VDC with c64 when connecting core8 module]

I desolder the bridge reflector and now I got +5 on every pins ( I didn't see any instruction to desolder BR1?)

When I put in the two IC and turn it on I now I get around 1.6V on the points, is this wrong?

[+5VDC drops to +1.7VDC with c64 when connecting core8 module]

Sounds like something is shorting the 5V rail, check for continuity between +5 and GND

It's the pcb and componets from smashtv.

I can't see anything with my eyes, is it possible to measure shortingin some way?

I have a multimeter with ohm,A F,V (DC & AC) and HZ plus a beeper.

My bridge reflector (BR1) get's very hot is this normal?

I get a beep when I put the probes on J2 but not on J1.

[+5VDC drops to +1.7VDC with c64 when connecting core8 module]

I have build this PSU from the c64 brick

http://www.ucapps.de/mbhp/mbhp_8xsid_c64_psu_optimized.pdf

I get +14VDC and +5V.

I have removed the 7805 regulator from core8 module and I have bridged leg 1 and 3.

But when I connect the +5VDC to the core module J2 (no others module connected and no display and no IC i sockets) it drops to about 1.7VDC on all measurement points.

IC1:MCLR(1) - IC1:Vss(12) = 1.7V

IC1:Vdd(11) - IC1:Vss(12) = 1.7V

IC1:Vdd(32) - IC1:Vss(31) = 1.7V

IC2(8) - IC2:(5) = 1.7V

What can be wrong?

[Can I use MB-6582 control surface on a single core+sid module?]

Ok, I bought the 1 x core8,2 x sid+1 x DINX4. My first thoughts was to build the minimal control surface and then I changed and wanted to go with the large control and now I'm more into the MB-6582 control surface.

Maybe I go for the minimal anyway :frantics:

[SmashTV SID and C64 optimized PSU, dobule Voltage Regulator?]

no, because the two output voltages of the C64 psu are added to about 14V and the 7809 / 78L09 on the sid module regulates this down again.

I missed that text on the connector 14VDC, I thought 7809 always delivered 9V. But now its 5+9V?

Thanks anyway...

[Can I use MB-6582 control surface on a single core+sid module?]

I have a CORE8+2x SID modules can I use the MB-6582 control-surface?

http://2.bp.blogspot.com/_5F4S32x8xtk/RkJbPDIVzgI/AAAAAAAAACQ/mRzuJ6Q-bQ8/s400/481496901_9bfa913cf4-1.jpg

[SmashTV SID and C64 optimized PSU, dobule Voltage Regulator?]

I budling a core8 + sid module and LCD. I bouth everything from smashTV and going to use a C64 psu (brown).

In the instructions i read to bridge the 7805 on the CORE module:

http://www.ucapps.de/mbhp/mbhp_8xsid_c64_psu_optimized.pdf

But my SID-module also contains a voltage regulator, should this also be bridged?

http://www.midibox-shop.com/mbhp_SIDR3a.html

[Two 6581 SID chip but not same version]

I give it a try, when i done with my core+2xsid modules. :laugh:

[Two 6581 SID chip but not same version]

Thanks!

[Thought you should see this, The Chipophone]

Is it possible do this on the midibox SID?

[Two 6581 SID chip but not same version]

Thanks I try it, are they any difference on these chips? (I can't find any information about it) I read here on the forum that the volume and sound can separate from different rev of the chip.

[Two 6581 SID chip but not same version]

I got two SID-chip but will they be good in a Midibox SID stereo setup?

1x 6581R4AR 2286 s

1x 6581 4383