[15155]

https://www.aliexpress.us/item/3256803970893483.html

I've ordered trays (and they send the OEM tray) - unique barcodes, legit.

> Just give me a plain FPGA and MCU with no wizards or GUIs or automatic code generation.

You can pretty much cut out all of their tools and get a pure Yocto/Vivado TCL build for the bitstream for the 7 series Zynqs. Very low touch.

Their IO planner (in the Vivado IP integrator) is somewhat necessary for complex peripheral scenarios and is one of the few things I ever use Xilinx GUI applications for anymore.

[scottapotamas]

I was interested to see, or at least what state they're in so I grabbed a couple. Might try to compare them against some genuine ones with CT and destructive inspection.

On the chance they're half reasonable, thanks for the link.

[15155]

Let me know if the barcodes are anything but unique/perfect. This has been the case with many vendors, but these chips are cheap enough that you can try 50 vendors.

[scottapotamas]

Will do. Not too worried about trying low cost parts to gain some minimal confidence in a possible source, they're compelling for weekend side-projects at least.

I've previously struggled to roll the dice for higher end parts as the cost difference isn't as extreme and had some obvious reballed parts a few years ago. If they're OK then their $20 XC7K325T will be at the top of my list...

[15155]

At $20, just buy from LCSC-

https://www.lcsc.com/product-detail/Programmable-Logic-Devic...

https://www.lcsc.com/product-detail/Microcontroller-Units-MC...

[scottapotamas]

That's low-end Zynq and Artix and I'm thinking more >676 Kintex, though I appreciate any discussion on sourcing.

In the way that that Aliexpress vendor lists the 7010 parts at 1/10th the price of LCSC, some of their $20-60 listings are also shockingly cheap in comparison.

[15155]

Ah, missed the K! For the K420T, I pay around $30-45 from CN (not Aliexpress) sources with original barcodes (but these vendors are quite a bit harder to deal with.)

[azonenberg]

I have some obviously reballed (but well done) aliexpress XCKU5P's that I got for $55 a while back. Haven't tested yet but the price was so good I couldn't resist.

[scottapotamas]

I’ve been bitten before but the risk/reward is probably worth it for parts like that.

Thanks for your write-ups btw, been following glScope development for a while.

[anyfoo]

I don’t even find Vivado that bad, but maybe I have Stockholm syndrome. Or maybe it’s because I’m forced to use Intel Quartus right now and wish it was Vivado every time.

[Yoofie]

How do you assemble your board with BGA packages? Or do you procure the parts and then send them somewhere for assembly?

[15155]

Vapor phase reflow.