/diy/ - Do It Yourself

>>2048012
picrel

>>2048017
Keep learning, keep asking questions and challenging yourself. And KiCAD is a pretty good piece of software, both for drawing out circuit diagrams, and for making PCBs. Also it's got 90% of all ICs you could ever use in it, meaning you don't have to constantly cross-reference the datasheet for the pinouts. I recommend snooping about on local 2nd-hand websites for an analog oscilloscope, they're. And thanks for that post!

>>2048021
I imagine if you make an array of low-tempco, low-drift, matched SMD resistors, the resultant quality wouldn't be bad. But that would be more expensive than an integrated SPI or I2S DAC, and a lot harder to assemble. Buying monolithic R2R arrays however, that's still viable. I am accepting part recs.

>>2048064
Yeah of course it's more than enough for an oscope vector. Though I'd definitely consider running the tape slower if it would improve frequency response.

>>2048068
>but interest was quickly lost, the project
Are you the anon who made the project? Judging by your images, it works really well for what it is. But there's a lot of questionable design decision rectifications between its current state and it being something optimised for a limited production run. If nothing else, a monolithic 12-bit stereo DAC would be able to handle the X and Y channels pretty well. Z could be done with something else. I'm also not sure why you'd choose to use an FT2232 instead of a dedicated MCU with native USB.

>>1898752
I want to make SMT versions of THT components (i.e. with their legs folded flat to the board) because doing proper (plated) through-holes with a home-etch setup is a real pain. At least compared to just using some copper wire for vias.
Also the caps will look like this: