Nathan @nmk4567
UMD Aero '25, Doing Electronics and Space Stuff Massachusetts, USA Joined November 2015-
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As someone who does not have to imagine being a student graduating from UMD last week with a degree in aerospace engineering (I am one), I would appreciate it if fox news did not presume to know how we feel
Gaines: You can even make this up. Instead of honoring entrepreneurs or veterans or innovators, they picked Kermit the Frog…
@ElectronicsbyJH Are you TID testing a spartan 7? That's actually very relevant to a project I'm working on, I hope you publish the results
Today on things that shouldn't be used as SDRs: the HSTX peripheral on the Raspberry Pi Pico 2. I'm using it to transmit a clock output at 150 MHz, then using DMA to toggle a bit that inverts the output, which makes BPSK. It makes an absolute mess of the spectrum, but it works.
@GregDavill Is that a SOIC flash chip on a WSON footprint? I definitely haven't done that before🙃
I think I've got a way to modulate (D)BPSK at the clk_hstx frequency with a configurable divider to set datarate and it uses 0 CPU cycles (only DMA and PIO). I preordered some pico 2s so I'll test it out when they come in.
@cliffordheath Though of course, the mechanicism by which strain affects the FPGA could be due to changes in capacitance. There's some theories in the original articles but no conclusion.
@cliffordheath Definitely strain. I was pressing with a thin plastic tool and the amplitude changed based on pressure, not proximity. Just touching the chip with my finger didn't produce any noticeable effect.
I saw an article about using an FPGA as a strain gauge by looking at the frequency of a ring oscillator and I wanted to try it. Half an hour later, I had this graph. The two spikes are the times I was pressing on the FPGA, with maybe 3 lbs of force. FPGA is an Artix 7.
I found out about here: voltagedivide.com/2024/03/18/unc… Original article: hackaday.com/2015/09/27/mys…
@Ascii211 Any idea what mission or program it's from? From date codes on the parts it looks like it's from the mid 90s.
@TheZoq2 A modern UX and FST support? I've been waiting literally years for this. It just needs an option to use as a vscode extension for opening FSTs/VCDs and it'll be perfect.
For any spacecraft, there's one system that unifies them all: avionics. In our latest engineering video learn how we approach avionics at Astranis.
@joebarnard I've got a final on compressible aerodynamics this week. I am not looking forward to it.
@joebarnard I loved The Three Body Problem, the first book definitely had the same feeling as Project Hail Mary and the next two were pretty good as well
@Ascii211 None of my benches have ever looked that neat lol Is that a korad PSU? I've been thinking about getting one, mainly because it's the cheapest I've seen that's both programmable and linear.
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