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--- mb-sidr8tr:start [2011/11/12 17:42]
m00dawg
+++ mb-sidr8tr:start [2020/12/08 17:19] (current)
m00dawg
@@ Line 1: / Line 1: @@
 ====== MB-SIDR8TR ======
-This is a project built around making a MidiBox SID in a 3U rackmount case using the MB-6582 mainboard. This is a **huge** work in progress however feel free to contribute!
+This is a project built around making a MidiBox SID in a 3U rackmount case using the MB-6582 mainboard. This is a **huge** work in progress however feel free to contribute! You can also follow this project on [[https://github.com/m00dawg/sidr8tr|Github]].
-===== Status =====
-==== 2011-10-14 ====
-Approached the control surface from an entirely new angle but putting the shift registers directly on the boards. This branches away from the MB-6582 design but can be configured with minimal code modifications, and makes the design of the control surface, and various parts, easier. Wiring it all up is also easier and now involves largely DIL headers. The board that is further along is currently the LED matrix, which is actually two boards (the LED matrix board itself plus a daughterboard housing the shift registers that is mounted behind it).
-==== 2011-09-11 ====
-Added jumpers to the LED matrix board to make it a bit more flexible since you can choose whether or not to share 2 pins from the JD8 header. The board would still require using a button-matrix, however. This was to make the board more compatible for other MidiBoxers (I plan on using the same wiring as the MB-6582 control surface).
-==== 2011-09-06 ====
-Back at it again. I set this project down for a while to work on my band's debut album (which used more the NES than the SID). I also was feeling overwhelmed with designing the control surface stuff. But I'm back it! Worked on the LCD module and ended up trying out a 2x20 setup instead which makes the LCD control board smaller by directly mounting the LCD itself to the front panel via blind threaded screws on the back. That's the idea, anyway. [[http://midibox.org/forums/topic/16002-screw-hole-size-for-crystalfontz-lcds/|This]] post has some good thoughts on using blind screw-holes for mounting the LCD to the front panel.
-Also received some good advice in
-[[http://midibox.org/forums/topic/15995-simple-balanced-audio-circuits-possible-with-mb-6582/|this]] post for using a line-drive to provide balanced outs. Thinking of using that for the passive mixer out although doing that for all inputs may require some further thought since it takes up a lot of space and pushes the limits of Eagle Standard (could modularize it though).
-==== 2011-05-12 ====
-Finished the wiring for the LCD module, though it's somewhat unoptimized (lots of vias). Thinking of doing it again but with a smaller wire size. The other modules should be a bit easier.
-==== 2011-03-31 ====
-Panel design is nearing completion, though there are a few ideas I still need to try such as some of the ones in [[http://midibox.org/forums/topic/15440-help-with-my-front-panel/page__st__20__gopid__136573#entry136573|this]] post. From that same post, I learned that using set screws on the back of the panel can be used to secure the panel for some of the additional screws I was going to add to the CS boards for rigidity. That means I need to go with at least a 3mm panel though, so I may need to put in a cut-out for the LCD panel on the back.
-==== 2011-03-26 ====
-Updated the LED Matrix board to have an option for both SMD and through-hole
-==== 2011-03-21 ====
-BZZT! Setbacks. Turns out I over measured the available inside space of the 3U chassis so I had to reduce the vertical height of my control surface, which mucked things up a bit. I think I have things basically fixed, although things are a bit asymmetric vertically now which sort of bugs me. I can likely resolve that by using a smaller LCD panel - either a 4x20 with a smaller overall size or a 2x20 with a standard size. I will miss the cool progress indicator for the 4x20 but the 2x20 gives me way more colors to choose from, including cool inverted colors, oooh! See [[http://midibox.org/forums/topic/15431-are-4x20-lcds-much-better-than-2x20s/|this]] forum post for more info.
-I think I've settled on the spacers to use. I am going with male/female spacers 11/32" (8.75mm) in length, which will be a bit less than was used for the MB-6582, meaning the buttons may stick out a bit more, but otherwise it will allow me to use a 2mm or 2.5mm front-panel. Thanks to nebula for the male/female spacers. See [[http://midibox.org/forums/topic/15426-2mm-panels-8mm-spacers/page__gopid__136323#entry136323|this]] forum post for more info. One thing I didn't account for was the LCD, and that may make things a little tight.
-==== 2011-03-17) ====
-All of the boards with knobs have been designed, leaving only the LCD panel board and the SID selector board. I am behind on updating the wiki but will do so probably once I finish all the boards since I don't want ot have to re-upload revisions of the front panel or control surface PCBs as I refine the measurements and things. If anyone wants to see the work in progress, send me a [[http://midibox.org/forums/user/4914-m00dawg/|PM]].
 ===== Parts =====
@@ Line 115: / Line 77: @@
 ==== Power ====
+=== Current Design ===
+So far I have only done some basic tests of this design, though am pretty happy with it so far. I decided to adopt the newer approach to using a switching DC regulator for the 5V supply similar to the new MB6582 [[http://wiki.midibox.org/doku.php?id=wilba_mb_6582_psuopte|Option E]]. This can work for both the MB6582 or the SIDR8TR. For the MB6582, it's intended to be used as an external power supply option by supplying +5 and +9VDC directly. And for the SIDR8TR would be part of the power section where where there would also be a transformer. Or so was my idea. The same external power option could be used for the rackmount as well.
+You can order the bareboard [[https://oshpark.com/shared_projects/9WirKOEr|here]] from OshPark. Otherwise the EagleCAD files are below:
+{{:mb-sidr8tr:mbpwr-switch-schem.png?400|}}
+{{:mb-sidr8tr:mbpwr-switch-board.png?400|}}
+{{ :mb-sidr8tr:mbpowr-switch.zip |}}
+=== Previous Design ===
 The power board supplies +/- 12V, +9V and +5V. +12V might be able to be used for a SID-6581 but the board is really optimized around suppling +9V (in other words, 8580/6852 SIDs). This board is based off [[:northernlightx]]'s Complete PSU with a few modifications. The +/- 12V is for adding AOUT modules (namely for [[http://www.midibox.org/dokuwiki/doku.php?id=ssm2044_pcb|SSM 2044]] filters). **NOTE** Be sure to use at least one fuse! Putting one on for the main supply before going to the transformer is a very very good idea!
@@ Line 152: / Line 126: @@
 | Crimp Connectors | (For Transformer | ?? |
 | Fuse Holder | | Radio Shack |
+===== Updates =====
+==== 2020-12-08 ====
+Added new power board. Links to github project.
+==== 2011-10-14 ====
+Approached the control surface from an entirely new angle but putting the shift registers directly on the boards. This branches away from the MB-6582 design but can be configured with minimal code modifications, and makes the design of the control surface, and various parts, easier. Wiring it all up is also easier and now involves largely DIL headers. The board that is further along is currently the LED matrix, which is actually two boards (the LED matrix board itself plus a daughterboard housing the shift registers that is mounted behind it).
+==== 2011-09-11 ====
+Added jumpers to the LED matrix board to make it a bit more flexible since you can choose whether or not to share 2 pins from the JD8 header. The board would still require using a button-matrix, however. This was to make the board more compatible for other MidiBoxers (I plan on using the same wiring as the MB-6582 control surface).
+==== 2011-09-06 ====
+Back at it again. I set this project down for a while to work on my band's debut album (which used more the NES than the SID). I also was feeling overwhelmed with designing the control surface stuff. But I'm back it! Worked on the LCD module and ended up trying out a 2x20 setup instead which makes the LCD control board smaller by directly mounting the LCD itself to the front panel via blind threaded screws on the back. That's the idea, anyway. [[http://midibox.org/forums/topic/16002-screw-hole-size-for-crystalfontz-lcds/|This]] post has some good thoughts on using blind screw-holes for mounting the LCD to the front panel.
+Also received some good advice in
+[[http://midibox.org/forums/topic/15995-simple-balanced-audio-circuits-possible-with-mb-6582/|this]] post for using a line-drive to provide balanced outs. Thinking of using that for the passive mixer out although doing that for all inputs may require some further thought since it takes up a lot of space and pushes the limits of Eagle Standard (could modularize it though).
+==== 2011-05-12 ====
+Finished the wiring for the LCD module, though it's somewhat unoptimized (lots of vias). Thinking of doing it again but with a smaller wire size. The other modules should be a bit easier.
+==== 2011-03-31 ====
+Panel design is nearing completion, though there are a few ideas I still need to try such as some of the ones in [[http://midibox.org/forums/topic/15440-help-with-my-front-panel/page__st__20__gopid__136573#entry136573|this]] post. From that same post, I learned that using set screws on the back of the panel can be used to secure the panel for some of the additional screws I was going to add to the CS boards for rigidity. That means I need to go with at least a 3mm panel though, so I may need to put in a cut-out for the LCD panel on the back.
+==== 2011-03-26 ====
+Updated the LED Matrix board to have an option for both SMD and through-hole
+==== 2011-03-21 ====
+BZZT! Setbacks. Turns out I over measured the available inside space of the 3U chassis so I had to reduce the vertical height of my control surface, which mucked things up a bit. I think I have things basically fixed, although things are a bit asymmetric vertically now which sort of bugs me. I can likely resolve that by using a smaller LCD panel - either a 4x20 with a smaller overall size or a 2x20 with a standard size. I will miss the cool progress indicator for the 4x20 but the 2x20 gives me way more colors to choose from, including cool inverted colors, oooh! See [[http://midibox.org/forums/topic/15431-are-4x20-lcds-much-better-than-2x20s/|this]] forum post for more info.
+I think I've settled on the spacers to use. I am going with male/female spacers 11/32" (8.75mm) in length, which will be a bit less than was used for the MB-6582, meaning the buttons may stick out a bit more, but otherwise it will allow me to use a 2mm or 2.5mm front-panel. Thanks to nebula for the male/female spacers. See [[http://midibox.org/forums/topic/15426-2mm-panels-8mm-spacers/page__gopid__136323#entry136323|this]] forum post for more info. One thing I didn't account for was the LCD, and that may make things a little tight.
+==== 2011-03-17) ====
+All of the boards with knobs have been designed, leaving only the LCD panel board and the SID selector board. I am behind on updating the wiki but will do so probably once I finish all the boards since I don't want ot have to re-upload revisions of the front panel or control surface PCBs as I refine the measurements and things. If anyone wants to see the work in progress, send me a [[http://midibox.org/forums/user/4914-m00dawg/|PM]].
 ===== Props =====
 Thanks to TK, Wilba, SmashTV, and nILS for their help, inventions, and support. Without them, this would not have been possible!

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