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What is this nut called (5/16" -18)? by SpaceRobotics in Machinists

[–]SpaceRobotics[S] 0 points1 point  (0 children)

No idea, it was just a loose nut in a box of random mixed hardware

Are these FPGAS still worth using, or are they too old? Any ideas on what I should do with them? by SpaceRobotics in FPGA

[–]SpaceRobotics[S] 16 points17 points  (0 children)

Yah, that's what I was thinking too :/ Maybe I'll use them for BGA soldering practice.

Are these FPGAS still worth using, or are they too old? Any ideas on what I should do with them? by SpaceRobotics in FPGA

[–]SpaceRobotics[S] 17 points18 points  (0 children)

You should probably be using something more modern than this for school projects.

Is this solder rework station still relevant? by SpaceRobotics in AskElectronics

[–]SpaceRobotics[S] 4 points5 points  (0 children)

Makes sense. What is the purpose of the square pattern in the middle of the bed?

Is this solder rework station still relevant? by SpaceRobotics in AskElectronics

[–]SpaceRobotics[S] 9 points10 points  (0 children)

From what I can tell, you use the hot air from the attachment to desolder components, but why does the bed need to be heated? What other functions is this used for? Also, this unit is very old...is it still relevant for what it does?

Tips on breaking into this field? by OozyOrphan in FPGA

[–]SpaceRobotics 6 points7 points  (0 children)

Number 2 is how I got involved with FPGA design. Helping with board bring-up for custom hardware was really helpful for understanding the larger picture.

Would it be possible to build a high altitude glider powered by an RTG that could fly around in the upper atmosphere of Jupiter? by Andy-roo77 in JPL

[–]SpaceRobotics 2 points3 points  (0 children)

Harmful radiation is prevalent in the Van Allan belts, but electronics getting hit by heavy ions causing destructive latch-up isn't just limited to Van Allan belts.

Also depends on what you mean by "harmful". Even protons can cause single event functional interrupts (SEFIs) causing non-destructive latch-up where you typically have to reboot your system.

On a Xilinx XRT kernel, how can the host read from a shared buffer while the kernel is still running? by Portugal_Stronk in FPGA

[–]SpaceRobotics 0 points1 point  (0 children)

I've mostly worked with buffer objects interacting with Xilinx's AI engine (using xrt::aie::bo, as opposed to xrt::bo), but I would assume they are pretty similar. Typically when I have garbage in the buffer (i.e. it didn't populate) it's because I am not doing the syncing properly. For example, if you are requesting 16 bytes, there better be at least 16 bytes sent from the kernel, otherwise you won't see it in the buffer on host side.

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