Electronics > Projects, Designs, and Technical Stuff

Adapter Box for (all) your Lab needs

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dangrie:

--- Quote from: t1d on November 11, 2018, 07:46:03 pm ---I must laugh... I know myself... I would have way over-thought this... Designed a custom PCB, paid for it, waited for it, etc... When all I needed was a positive and negative plane.

Simply excellent, pun intended, on your part... A single piece of copper clad, divided, and a few holes...

--- End quote ---
So basically what I'm doing now :D
However, for me, designing is more fun than building and having the final product is just a nice side-effect :)

I just updated the files with all your suggestions: Power LED, better layout of the banana jacks, enough space for bigger banana posts with cable screw clamp, USB connector (Vout)

I'm going to order 10 of the boards now, I think I'm now where I wanted to be with the project

timgiles:
Having just built one, there are three issues:

1. No pin 1 dot for the LM on the bottom side of the PCB
2. The BNC locator pins will not both fit in at the same time, the holes on the PCB are too far apart
3. No LED in BOM (not critical but the BOM should be complete)

Otherwise I get about 0.2 Ohms resistance between each connector - and the only connector that gives me anything above 20Meg when connecting between +ve and -ve is the green terminals. I suspect this is within manufactures tolerance.

dangrie:

--- Quote from: timgiles on December 29, 2018, 08:38:16 pm ---Having just built one, there are three issues:

1. No pin 1 dot for the LM on the bottom side of the PCB
2. The BNC locator pins will not both fit in at the same time, the holes on the PCB are too far apart
3. No LED in BOM (not critical but the BOM should be complete)

Otherwise I get about 0.2 Ohms resistance between each connector - and the only connector that gives me anything above 20Meg when connecting between +ve and -ve is the green terminals. I suspect this is within manufactures tolerance.


--- End quote ---

Thanks for the extensive feedback. I fixed all the issues you mentioned, let me know if you find anything else.
FYI: I fixed the wrong BNC footprint by widening the mounting holes with a 3mm drill and scraped off some of the solder mask around the holes to be able to solder the pins in place.

t1d:

--- Quote from: dangrie on January 01, 2019, 06:21:05 pm ---Thanks for the extensive feedback. I fixed all the issues you mentioned, let me know if you find anything else.
--- End quote ---
It sounds like you have a final design. Please post your design files, in whatever format you created them... KiCad? Eagle? Etc. I am looking at building this and having your board printed might be easier than working with perf board.

Great project. Thanks.

newbie666:
The files are on his github: https://github.com/dangrie158/AdapterBox

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