Reply 61 of 121, by keropi
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- l33t++
awesome work there with the pcbs 😀
Reply 62 of 121, by PeterLI
Reply 63 of 121, by keropi
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- l33t++
^ no doubt about that either 😀
Reply 64 of 121, by Stojke
Reply 65 of 121, by keropi
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- l33t++
wrote:What will connect to the card?
the Roland MPU-401 box , this specific version:
Reply 66 of 121, by PeterLI
Reply 67 of 121, by Stojke
Reply 68 of 121, by PeterLI
Reply 69 of 121, by archsan
- Rank
- Oldbie
Good. Now please clone the breakout box as well.
🤣
"Any sufficiently advanced technology is indistinguishable from magic."—Arthur C. Clarke
"No way. Installing the drivers on these things always gives me a headache."—Guybrush Threepwood (on cutting-edge voodoo technology)
Reply 70 of 121, by PeterLI
Reply 71 of 121, by Jepael
wrote:Good. Now please clone the breakout box as well.
If it is enough to just make it compatible with PC, it only needs to look like a register compatible UART to a PC (register map is approximately compatible with a Motorola 6850 UART). Then make a compatible breakout box with modern microcontroller guts as you wish.
Reply 72 of 121, by PeterLI
Reply 73 of 121, by archsan
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- Oldbie
Hey hey that 🤣 smiley means I was kidding!
I have the MPU-IPC-T version (got the pair for cheap years ago), you know, where the processing unit is on the ISA card instead. Hence some of the chips look very familiar to the innards of your MPU-401. In the case of your MPU-401 it actually houses the processing unit itself indeed, so it's more than just a "breakout box" -- whereas with the MPU-IPC-T the term is more correct. 😀
Apparently the MPU-401 box is as important as the MPU-IPC-T card, but the silly thing is that the MPU-IPC-T breakout boxes are far more available than the actual MIDI processing unit cards themselves. Silly silly scrapers!
"Any sufficiently advanced technology is indistinguishable from magic."—Arthur C. Clarke
"No way. Installing the drivers on these things always gives me a headache."—Guybrush Threepwood (on cutting-edge voodoo technology)
Reply 74 of 121, by bjt
- Rank
- Oldbie
Great job. Nice to see someone taking a project through to completion. Out of interest what's the total materials & assembly cost per card in your current small production run?
Reply 75 of 121, by PeterLI
Reply 76 of 121, by archsan
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- Oldbie
Um, when you say this:
wrote:MPU-401s are pretty common and usually really cheap. 😀
How cheap do you mean exactly? Somewhere under $50? Actually I got my two pairs for less than that each. Well the cheap ones come and go really fast I suppose.
Btw, I too like the elegant design of the MPU-401 box. And also the cards you have made -- they look simply good somehow. 😀
"Any sufficiently advanced technology is indistinguishable from magic."—Arthur C. Clarke
"No way. Installing the drivers on these things always gives me a headache."—Guybrush Threepwood (on cutting-edge voodoo technology)
Reply 77 of 121, by PeterLI
Reply 78 of 121, by archsan
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- Oldbie
wrote:1 JPY
Oh, one yen... of course. Excuse me, I have to go and learn some Japanese. Then I'll grab myself some bargain ローランド stuff. 🤣
"Any sufficiently advanced technology is indistinguishable from magic."—Arthur C. Clarke
"No way. Installing the drivers on these things always gives me a headache."—Guybrush Threepwood (on cutting-edge voodoo technology)