Author Topic: thoughts on Digitech Space Station eprom copying?  (Read 159328 times)

0 Members and 1 Guest are viewing this topic.

chewyjustice

Re: thoughts on Digitech Space Station eprom copying?
« Reply #640 on: December 15, 2016, 04:50:43 AM »
Hey all,
Just finished reading this whole thread, and I think I understand what I need to do to make my XP100 into an XP300. Is anyone still able to burn an eeprom chip and send it to Australia?

Govmnt_Lacky

Re: thoughts on Digitech Space Station eprom copying?
« Reply #641 on: December 15, 2016, 09:18:10 AM »
Hey all,
Just finished reading this whole thread, and I think I understand what I need to do to make my XP100 into an XP300. Is anyone still able to burn an eeprom chip and send it to Australia?

To be totally honest, unless you can find someone locally to burn it for you..... it would be comparable in price to just buy an EEPROM burner and do it yourself. Seriously.

After the price of the chip and shipping (from most locations) it would add up to about the same costs.

Food for thought.  ;D
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of ‘up to and including my life.’

digi2t

  • Poster2
  • **
  • Posts: 4067
  • Total likes: 654
  • "Digital? Any idiot can count to 1!" - Bob Widlar
Re: thoughts on Digitech Space Station eprom copying?
« Reply #642 on: December 15, 2016, 11:35:17 AM »
Something else to chew on...

When talking about burning a chip locally for this project, I think one's mind might stall at "I need to find someone that works on pedals, effects, consumer electronics, etc.". Chip burners are really big with auto tuners too. Know anyone that does some tuning in their spare time? Maybe a local dyno shop? Call them up, chances are they might have a burner. Slip them the .bin file, the chip, and a couple of bucks (maybe a 6'er of beer if it's really hot out), I can't see them not being more than happy to burn your chip for you.
"No matter how many times I cut it.... it's STILL too short!!

Asian Icemen rise again...
http://www.soundclick.com/bands/default.cfm?bandID=903467

chewyjustice

Re: thoughts on Digitech Space Station eprom copying?
« Reply #643 on: December 16, 2016, 12:52:34 AM »
Hey all,
Just finished reading this whole thread, and I think I understand what I need to do to make my XP100 into an XP300. Is anyone still able to burn an eeprom chip and send it to Australia?

To be totally honest, unless you can find someone locally to burn it for you..... it would be comparable in price to just buy an EEPROM burner and do it yourself. Seriously.

After the price of the chip and shipping (from most locations) it would add up to about the same costs.

Food for thought.  ;D
Thanks for the idea. I thought it would be a waste to buy it and use it only once, but it might be worth it if i can get one cheap

Sent from my SM-G900I using Tapatalk


chewyjustice

Re: thoughts on Digitech Space Station eprom copying?
« Reply #644 on: December 16, 2016, 12:55:29 AM »
Something else to chew on...

When talking about burning a chip locally for this project, I think one's mind might stall at "I need to find someone that works on pedals, effects, consumer electronics, etc.". Chip burners are really big with auto tuners too. Know anyone that does some tuning in their spare time? Maybe a local dyno shop? Call them up, chances are they might have a burner. Slip them the .bin file, the chip, and a couple of bucks (maybe a 6'er of beer if it's really hot out), I can't see them not being more than happy to burn your chip for you.
Hmmmm great idea. I'll have to have a look around and see if this is an option

Sent from my SM-G900I using Tapatalk


qwerty8787

Re: thoughts on Digitech Space Station eprom copying?
« Reply #645 on: January 06, 2017, 12:47:58 PM »
Hi everyone,

a bit OT, hope you don't mind.

I have a bypass problem in my pedal. It never goes bypass basically.

Can someone measure the voltage on R13 (on the "via" side) while pedal is active AND while pedal is in bypass? I'm getting weird voltages, would be helpful to double check with a working unit.

Thanks in advance!

slacker

Re: thoughts on Digitech Space Station eprom copying?
« Reply #646 on: January 08, 2017, 08:05:47 AM »
Can someone measure the voltage on R13 (on the "via" side) while pedal is active AND while pedal is in bypass?

Here you go, the via end of R13 should be 5 volts in bypass and 0 volts when the the effect is on. The via end is connected to pin 8 of the SC80C31 chip, so you should get the same voltages there as well. I'd guess the most likely problem is a bad bypass switch, or bad connection from the switch PCB to the main board.
« Last Edit: January 08, 2017, 08:07:24 AM by slacker »

clayton9610

Re: thoughts on Digitech Space Station eprom copying?
« Reply #647 on: January 15, 2017, 02:48:12 PM »
Thanks everyone for making this happen.  I dusted off my broken xp100 and recently repaired it to stock.  Anyone know the best place to find the capacitors and jfets needed for a straight xp300 conversion in Canada?  Can I substitute j1113a(as listed in xp300 schematic) with j113? 

Cheers

Govmnt_Lacky

Re: thoughts on Digitech Space Station eprom copying?
« Reply #648 on: January 17, 2017, 09:34:24 AM »
Thanks everyone for making this happen.  I dusted off my broken xp100 and recently repaired it to stock.  Anyone know the best place to find the capacitors and jfets needed for a straight xp300 conversion in Canada?  Can I substitute j1113a(as listed in xp300 schematic) with j113? 

Cheers

Yes... you can use J113.

Keep in mind that to convert from XP100 to XP300 there are more parts than just caps and JFETs needed.  ;)

If you are in Canada, I suggest contacting "digi2t" for a link to parts sourcing. I heard he is like the Canadian Godfather of DIY  ;D  :icon_lol:
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of ‘up to and including my life.’

clayton9610

Re: thoughts on Digitech Space Station eprom copying?
« Reply #649 on: January 17, 2017, 02:15:31 PM »
He's the reason I have a working xp300 now!  He sent me the chip a while back but I had broken two of its pins among other mishaps. 

I have the xp100 version with the program stored in the eprom and the u8 smd ic already soldered in.   I fixed numerous broken traces, repaired the eprom pins, and haphazardly wired capacitors with missized/broken leads and now have the xp300(in mono). 

I am blown away by the effects.  I thought it was just hype and had almost given up the mod.  So grateful for everyone's contribution. 

digi2t

  • Poster2
  • **
  • Posts: 4067
  • Total likes: 654
  • "Digital? Any idiot can count to 1!" - Bob Widlar
Re: thoughts on Digitech Space Station eprom copying?
« Reply #650 on: January 17, 2017, 02:38:36 PM »
If you are in Canada, I suggest contacting "digi2t" for a link to parts sourcing. I heard he is like the Canadian Godfather of DIY  ;D  :icon_lol:

I think that title rightfully belongs to Mark Hammer. I'll be more than happy with the "Court Jester" title though.  :icon_mrgreen:

Mouser has them in stock.
http://ca.mouser.com/Semiconductors/Discrete-Semiconductors/_/N-awhng?Keyword=j113&FS=True
"No matter how many times I cut it.... it's STILL too short!!

Asian Icemen rise again...
http://www.soundclick.com/bands/default.cfm?bandID=903467

chewyjustice

Re: thoughts on Digitech Space Station eprom copying?
« Reply #651 on: February 05, 2017, 05:20:17 AM »
Thanks everyone for this great resource. I have my xp100 space station convert working perfectly now and its just as great as i was hoping for.

Sent from my SM-G900I using Tapatalk


digi2t

  • Poster2
  • **
  • Posts: 4067
  • Total likes: 654
  • "Digital? Any idiot can count to 1!" - Bob Widlar
Re: thoughts on Digitech Space Station eprom copying?
« Reply #652 on: February 09, 2017, 05:12:00 PM »
That's what I like to hear! :icon_biggrin:
"No matter how many times I cut it.... it's STILL too short!!

Asian Icemen rise again...
http://www.soundclick.com/bands/default.cfm?bandID=903467

FuzzAldrin

Re: thoughts on Digitech Space Station eprom copying?
« Reply #653 on: March 02, 2017, 05:46:34 PM »
Finished mine! Just an XP-200 converted to XP-300 with output volume mod. I can post pics if anyone wants. I painted mine.
Question: Is setting #9 "octabass" mostly useless? I am getting almost zero octave down effect. Other than that, its really cool!

marmaliser

Re: thoughts on Digitech Space Station eprom copying?
« Reply #654 on: March 03, 2017, 08:12:08 AM »
Seeing as you have gone to the trouble of painting it lets have a look :)

Yes #9 "octabass" is mostly useless. 

caleboaks

Re: thoughts on Digitech Space Station eprom copying?
« Reply #655 on: July 06, 2017, 11:22:26 AM »
Revisiting this thread 2 years after completing a dual 100/300 build. I don't use the stereo capabilities and, as such, I can't remember if I ever tested the stereo output on the space station side. I just tested it, and I get a crackly, low-output signal from the "dry" output in both 100 and 300 modes. I'm confused about what this would mean, since I thought I killed the 100's dry output when I did the mod, and thought that it should work in space station mode. This in-between result is hurting my head.

Can someone (@Govmnt_Lacky (I'm not worthy)) summarize the part of the mod necessary to get stereo working in space station mode? It's fine if the dry output is sacrificed in whammy mode.

My understanding was that I needed to install C63, Q5, Q10, and remove R30. I thought I did that, but I'll check again. Is there anything else? Would a mistake on one of the other mod components affect stereo output?

MüThing

Re: thoughts on Digitech Space Station eprom copying?
« Reply #656 on: July 06, 2017, 12:22:53 PM »
As silly as it may sound, check if the crackly output is the same on every program. If it only occurs on a few such as the Synth Strings but not on Octabass then it may be a RAM issue.

digi2t

  • Poster2
  • **
  • Posts: 4067
  • Total likes: 654
  • "Digital? Any idiot can count to 1!" - Bob Widlar
Re: thoughts on Digitech Space Station eprom copying?
« Reply #657 on: July 06, 2017, 02:54:21 PM »
Ensure that the R30 jumper is removed. If you installed the other components, then 300 mode should be stereo, and 100 mode nothing. Maybe bad jfets? Or...

As silly as it may sound, check if the crackly output is the same on every program. If it only occurs on a few such as the Synth Strings but not on Octabass then it may be a RAM issue.

I concur. Check chip speed. Ensure that it is not slower than what's prescribed in the build doc. If the distortion is only on certain patches, and you have spare SDRAM chips, then use another chip, and swap it in. Process of elimination to check if you have a bad SDRAM chip. Not all the patches use all the memory, some are heavier than others, so MuThing's point is valid.

"No matter how many times I cut it.... it's STILL too short!!

Asian Icemen rise again...
http://www.soundclick.com/bands/default.cfm?bandID=903467