12 September 2017, 10:34 | #1 |
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CD32 Expansion Riser
Hi guys,
See last post. Much appreciated Chris Last edited by solidcore; 20 September 2017 at 03:28. Reason: Keeping things updated |
12 September 2017, 10:53 | #2 |
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There is a couple of CD32 riser boards about, 1 as you say has not long gone out of stock (spidi's), but as before shouldn't be too long, rather than create one yourself!
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12 September 2017, 11:21 | #3 | |
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So does anyone have any idea regarding the datasheet of the 5650092-1 and my eagle? thanks |
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12 September 2017, 11:23 | #4 |
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12 September 2017, 11:37 | #5 | |
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How does it work well on floppy Amiga games compared to WHDloadcd32 is there much difference on the CD32? And if I remove the expansion card in that adapter board does it effectively make the disc drive useless I'm assuming it would kill the disk drive functionality and would then be destroying a great unit by spending 129 GBP to effectively take the riser board out of it, although like something out of Mary Shelley's Frankenstein my brain started firing up with the idea that I might have to get back on eagle to make a frankenboard that accepts both lol, but I have no idea what I'm talking about here. hehe. Much appreciated Chris |
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12 September 2017, 12:29 | #6 | |
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Nope the expansion card is only an RTC (real time clock). All the FDC logic, Parallel port, RGB etc is on the riser. Just like it is on the other risers. |
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12 September 2017, 13:33 | #7 |
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Thread moved from the project.CD32 Conversion section to the support.Hardware > Hardware mods section
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12 September 2017, 15:04 | #8 | ||
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Also tanks for clearing things up for me regarding whdload. Yeah I'll be using a wb on the tf328 and whdload there. I still want to proceede with designing my own and I don't mind hitting below 50-60 in terms of build cost for about 5-10... I just need to find out the part numbers of the expansion edge connectors and if my eagle is correct, It is correct for the EDAC but they're hard to source and I wondered if the easier to source TE are the same pin layout as the EDAC, can't bloody tell and TE said they're not a direct replacement for EDAC, so I'm left royally and damned confused I'll probably go with the 5650092-1 TE and my design and pray lol. Quote:
Last edited by solidcore; 12 September 2017 at 15:12. |
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12 September 2017, 15:20 | #9 |
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The AMP edge connector should work fine, it's what Plasmab recommends with the TF328's that don't have the beveled edge. I have some of these myself for the Riser I'm designing in KiCAD. As for the Analogic riser, no destruction necessary as the RTC module will unplug just like the TF328.
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12 September 2017, 15:20 | #10 | |
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Good luck on building your riser, solidcore! The more designs the better. I welcome your addition since it's simple! Most of the designs go for an added extra since you have all those lines there ready to be used, but having one that is simple a pass-through board is also a welcome addition. |
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12 September 2017, 15:21 | #11 |
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12 September 2017, 15:46 | #12 | ||
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selling them at a low price simply in respect to those who are not comfortable soldering but are in my position and need something quick and cheap without the extra features. I'll build 3 and go from there I guess, with extra boards I can throw on ebay if demand surges but unlikely lol. I've yet to order the boards as I am still not 100% sure about them, mostly the ratsnest ground plane and if I need to hook up all the ground points or not and if its correct at all, need more youtubes/reading material regarding this matter lol. this newbie don't want to make mistakes :P Quote:
Also would there be any added benefit to anyone here if there were dual-edge connectors? such as those with RTC card and other expansion cards, makes me think if I should research into that a bit more prior to producing the pcbs. |
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12 September 2017, 15:48 | #13 |
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You're right i guess that's true. although cost is still a lot. I'm trying to think about that a lot lately since I spent a lot on the TF328 chips lol, and saw a balance closer to 0 than I like in my bank account YIKES!
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12 September 2017, 15:55 | #14 |
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Good Luck with your design, the PIC MMKeyboard schematics and firmware can be found quite easily on the interweb. One recommendation for your current design, it seems from the picture you posted that your VCC lines might be a little on the thin side. What width traces are you using for them? I know Kipper up'd his from 0.6mm to 1.6mm on the advice of Stedy if I remember correctly (its somewhere in the early pages of the main CD32 Expansion thread).
EDIT: This is the post, changed from 0.006" to 0.016": http://eab.abime.net/showpost.php?p=935526&postcount=33 Last edited by Bprepared; 12 September 2017 at 16:10. |
12 September 2017, 16:22 | #15 |
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12 September 2017, 16:48 | #16 | |
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A lot of the cost of items like this is the labor. If you do it yourself, it's just the parts, and on this project, the PCB etching is probably the costlier item, which doesn't mean it'll be very expensive. Yes you might have to order more than one PCB, but you can offload them easily I would believe. |
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12 September 2017, 16:56 | #17 | |
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Edit: I i realise that linking them together isn't realistic, however I must have it the wrong way round in terms of the pin order so I'll correct that and increase the 0.6mm to 1.6mm on the 5v's. thanks Edit: I could even add extra functionality to the passive board by simply a solder-on daughter boards which overlay the pin outs perhaps for RGB etc hehe just thinking Edit : got to 1.4 mm can't really push it to 1.6mm in my design but its better than 0.6mm. Last edited by solidcore; 12 September 2017 at 17:44. |
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12 September 2017, 16:57 | #18 | |
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12 September 2017, 18:42 | #19 |
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Didn't you notice https://github.com/terriblefire/brea...ter/cd32/eagle
TerribleFire started to design one him self. |
12 September 2017, 19:46 | #20 | |
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Much appreciated I will take a look and see what mistakes I've made vs his board. Updated version anyway: https://i.imgur.com/1mhqPhp.png 0.014" trace for the 5v , my spacing wont allow 0.016" atm but I'll play with that setting and see what the china pcb sites allow. Hopefully, my ground plane is now correct |
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