An entertaining build , and did work first time.
For Denise
This was built and worked first time , but there are a a few comments.
1. The interactive BOM for v2.1 suggests R4 is a ferrite filter inductor - but the documentation suggests a 1 ohm resistor.
2. Almost all through hole pads are very very small , and can be difficult to solder ( a larger tip gives good heat transfer , but is difficult to get into contact with the pad and lead. A smaller tip gets into contact - but does have problems transferring heat especially on pads connected to VCC or GND.
3. The most important thing to beware of is that everything is incredibly tight on space , so much so that some machine pin sockets needed filing to fit ( either because they are too close to another socket , or obstructed by a component ) - I would suggest NOT soldering DIL sockets before checking they will fit with adjacent components. I’d suggest checking clearance for v2.2
4. I did not fit the ZorroII connector nearest the CPU - as it’s possible it would fowl a planned CPU accelerator board.
Response from Enterlogic | June 26, 2024
Thanks for the constructive feedback Andrew, appreciate it! And congrats on a first run build :)
Please allow me to quickly respond to your feedback.
1. Affirmative, as mentioned on the page the interactive BOM was a low effort bonus that unfortunately for various reasons wasn't up to date. This is the reason we require a checkbox acknowledging awareness to this. Always use the BOM to verify components and values. My choice was to either release it as-is or not at all. So that's the best I could come up with.
2. Some of the pads are small, I agree! As you perhaps know or can imagine designing and routing a board like Denise requires both talent and compromise. I have forwarded your comment to the designer. Since every single trace of this board is meticulously thought through I am sure there's a reason for the sometimes elusive pads. And indeed large areas of copper like VCC and GND usually require both power and patience.
3. It's tight alright. But if you stick by-the-letter to the specs and components from the BOM no modifications to any sockets should be required. Perhaps you used an alternate component of a socket? I know this from experience actually as I too had to cut off about 0.5mm of a SER/PAR port on a build.
4. This is also part of the complexity-compromise discussion. Lots of CPU socket accessories work out of the box, like our own A-Turbo030 and Matze's popular 68030-TK2. But you're right others like the Terrible Fire TF536 _do_ require a pair of pin headers or a CPU-relocator available here on Tindie. But I see no reason to leave out a perfectly good Zorro slot for this reason alone. Please join our Discord server and check out the cool solutions our friends have come up with. There's even an adapter to transform one Zorro slot to an A2000 CPU slot. Leaving the 68000 CPU intact for maximum old school compatibility
As always; thank you for the feedback and taking the time to post it. Rev2.1 is the final version of Denise as of now.
