I have been thinking if I should report/ask here or not and decided that it could be beneficial for others, so here goes.

I have had PCBWay build 5 boards for me, including assembly, as my eyesight does not allow me to solder SMD (that and the lack of equipment ;) ) (This wasn't an easy task as there is one part missing in the data, which is, if I'm not mistaken, the pick-and-place index?? In the end, they went of pictures and information I could determine from your schematics)

The boards look fine, all components are mounted correctly, but when connecting to a (verified PD 12 volt compatible) power supply, all I get is 5 volt on both outputs, and the "stable power" LED does not come on. (No shorts, that's great ;) but unfortunately, no 12 volts either)

I had given up, but maybe with a few pointers I could salvage the modules and proceed with the projects, and other people that run into the same issue can read a solution here, if I/we ever find one.

As said in the other topic; I do not expect your support, it's open-source, it was my own choice to have them built, you don't owe me anything ;)
That said, any and all information you are willing and able to provide will be greatly appreciated.

Remon.

p.s., I have a ugreen 100watt PD supply at work I'm taking home today, it literally says 12v 3A as one of the output modes on the unit, so if that doesn't work, then issue confirmed ;)

Hi Stefan,

Just wondering if you could please modify the STLs for 3D printing the 1541-II power adapter case.

I tried to get it printed through JLCPCB (don't currently have my own printer) and they said the walls are too thin for any material and therefore risk breakage, so they recommend 1.5mm thickness.
I'm clueless about 3D modelling so I really don't have any idea on how to modify the models myself.

Here are the pictures they provided:

Also, it was mentioned in #7 that the bigger footprint for L1 makes the board a bit too big for the case, apparently? I'm not sure about this as I haven't tried it myself, but if necessary, can you please modify the case for this too?

Hopefully this isn't too big a request.

Hello,
Nowadays, it is very difficult to buy microprocessors used in this project.
Is it possible to load the program into the microcontroller with 2kB of memory? For example, ATTINY 214, 204?
Or rewriting the program to Arduino Nano?

Thanks in advance.
Jarek

Any chance you can update the gerber with BOM and CPL file(Component Placement List / Pick & Place File (PNP) file), it is used by automated SMT Assembly machines to determine where each part should be located on the boards, so JLCPCB can be used for component placement and SMD pre-build?

https://support.jlcpcb.com/article/79-pick-place-file-for-smt-assembly
https://support.jlcpcb.com/article/80-bill-of-materialsbom-file-for-smt-assembly

Will the DiskBuddy and DiskMaster work with other IEC drives like the 1571 or 1581? It seems like the XUM devices are more suited for that task; I'm generally looking for an alternative.

\C64-Collection\C64_DiskBuddy64\software\pc\libs\tinyupdi.py
line 529
"false" should be "False"

First of all; AMAZING! I have been toying with this idea but lack any electronics skills to design a board like this. I never thought to use it for a 1541-II (or any other with internal PSU), I "need" one for a ATAPI ZIP100 to USB conversion I recently finished (with a big 220v PSU). I would really want a single cable solution; for that I would need the USB data pins (USB2, simple 2 wires).

Here is the question; Does this board design support just tapping into the two data wires on the connector? I noticed in the diagram the pins are connected to one of the ICs, really no idea how all this* works ;)

Thank you for your amazing board, if I can find where, I will order some (would start with 4, 1 for my 1541, 1 for my 1571 if I ever feel confident enough to dremel the case, one for my ZIP drive conversion and one space because I will most definitely f*** it up!.

*) Power delivery is magic!

Can the code run well in the 10mhz variant? ATMEGA644PV-10AU its pin compatible and seems to be found sometimes at reasonable prices...

Hi,
at first, thank you for this cool and useful adapter and all the other tools in this Repo.

In have orderred a few boards and SMD components but L1 from the BOM doesn’t match the board if i’am correct.

My L1 looks much smaller than yours.

Hopefully there is a matching part available.

Or is maybe the PSPMAA0805-4R7M-ANP the correct one?
It's the same you have used here: https://github.com/wagiminator/Power-Boards/blob/master/78xx_Replacement_SD8942/78xx_Replacement_BOM.tsv

Hi Stefan, sorry to bother you again.

I got the power adapters made by JLCPCB (5 PCBs minimum, of course) and had them assembled because I can't do SMD work myself.

For the most part, they work fine - the voltages are within about 5% tolerances (most are much closer). None hit 12V on the dot but it's close enough (about 11.9V). Some hit 5V and some are just under (about 4.9V), so that's fine.
However, when hooked one up to my 1541-II, the drive is only drawing an absolute maximum of 4.37V on the 5V rail. The 12V rail seems fine though.

I should add that I don't know if the 1541-II fully works as it was in bad condition and I've been refurbishing it (nor does it have the original PSU). I've tested all but the 2003 chip (need to get a replacement soon) and, of course, the SMD amp. All the tested chips were fine except the 251828-03 gate array (tested them in my working 1541C, and tried its 251828-01 gate array chip in the 1541-II to no avail).
It seems the amp has some voltage control built into it too but I don't think this is the problem because the 5V rail seems to test the same through it.

So I'm wondering if this is a problem with the power adapter not outputting enough under load, or if there's something I've missed on the drive itself that could be causing the low voltage. The drive's spindle spins but both lights stay on. Best I can tell, it's not getting high enough voltage to reset the drive at boot, but I could be wrong.

I've tried a bunch of USB adapters, at least two of which definitely have the correct specs for powering this adapter.
I've spent days troubleshooting this drive, so I thought I'd reach out to you in regards to this power adapter to see if I can rule it out as a problem (or fix it if it is the problem).

hello I got a question about bring tape to theC64-Maxi (retro console) ....

because I got a bunch of tapes and a datasette but no part between datasette and USB

where can I check the full assembled plug? kickstarter?or some other funding site for these people who want a part of this spice?
hope this will be answered

THX

Hi,
Ordered a bunch of Epyx Freeload PCBs from Jlcpcb, and have now assembled two of them.
Both work with the exception of the LED which would not illuminate on either one. When I measure the voltage over the LED it is 5V instead of the expected 1.8-1.9V. The resistor used is a 470R as specified in the BOM.

It feels like the LED is fed 5V without going through the resistor. My knowledge of electronic design is pretty bad, but when I look at the PCB, only one end of the 470R resistor is connected to the circuit, is this correct ?

Hello. The Diskbuddy 64 is awesome.

I was wondering if a feature could be added to the software

Copy PRG to disk

I know you have copy PRG from disk but it would be great to go the other way. I have some PRG files that I'd like to copy to disk with this solution. I'm sure I could find some other software that could do it for me, but seems like this would be really useful and handy to do right from the diskbuddy64 gui.

Thank-you

Add NTSC timing to read and write. Seems to default to PAL timing.

Hi
Could you please post the latest firmware (2.10.0) in hex format so that I can program with my tl866ii plus programmer as I don't know how to generate from the compiler method.

Cheers Brad

Hello,

Firstly I want to say thanks for all of your work. I have built several of your projects now and this has been my first introduction to building, programing and getting a working thing at the end of it all. Super rewarding and super fun!

I have recently got 5 DumpMaster 64 from a friend that I am trying to program to get to work. These came to me preassembled and everything looks ok. I plug the unit in and the power led illuminates as expected. When trying to program the device using Arduino IDE and the instructions given on your page, i continually get an error. I have downloaded the MegaTinyCore package, set all of the chip, clock and programmer settings as suggested but when i click burn bootloader, i get an error message everytime.
New Text Document (3).txt

I have tried all of the 5 boards i have ensuring that the switch is set to UDPI but the same result each time. I have attached a text document that shows the error code i keep getting.

Thanks in advance for any help.

I spent a day trying to figure out why my DiskBuddy64 didn't work and finally realized i was using the DiskMaster64 folder, not the DiskBuddy64. I suggest you detect this case and report an appropriate error.

thanks

gday I'm still somewhat new to sourcing BOM parts apologies if I've done something wrong but after converting the BOM .tsv to .csv then importing into mouser theres a few non matches, and a few of the thick film resistors are min order of 5000 so at $10aud each the cost ramps up considerably and who needs multiple 5thousand reels when you only need 1 or 2 for a project lol, does anybody know alternative mouser parts for the non matches or no longer avalible items and possible cut tape sources for the resistors?