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oe1cxw's profile
Claire Xen 🏳️‍⚧️🏳️‍🌈🧙🏻‍♀️ BLM 🏴🚩
Claire Xen 🏳️‍⚧️🏳️‍🌈🧙🏻‍♀️ BLM 🏴🚩
Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩
@oe1cxw

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Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩

@oe1cxw

Neurodiverse trans geek girl. Yosys, RISC-V, SAT/SMT.

She/her/hers
clairexen.net
Joined September 2014

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    1. matthew venn‏ @matthewvenn 24 Sep 2019
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      I'm going to @hackaday supercon! Working on an FPGA based badge based on @esden's #icebreaker and @fpga_dave 's LCD pmod. Today I got some insight into timing from @oe1cxw and now I have a smooooth scrolling frame buffer.https://youtu.be/P0grX_liTUM 

      3 replies 9 retweets 40 likes
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    2. matthew venn‏ @matthewvenn 30 Sep 2019
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      #FPGA twitter quiz! My badge is going to be an FFT audio analyser with waterfall output. I've just fixed a bug that ruined exactly the last 3/4 of the FFT output. Any guesses as to what it was? Here's a photo showing a square sweep over 4 seconds.pic.twitter.com/UCh6OIOCSM

      3 replies 3 retweets 14 likes
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    3. Zip CPU‏ @zipcpu 30 Sep 2019
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      Replying to @matthewvenn @hackaday and

      Which way is the raster supposed to move: left to right, right to left (like my example did), top to bottom, or bottom up?

      1 reply 0 retweets 0 likes
    4. Zip CPU‏ @zipcpu 30 Sep 2019
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      Replying to @zipcpu @matthewvenn and

      Also, is it supposed to scroll across the screen, or forever overwrite what's there? Is it supposed to show one new line of data at a time, or more--something like a block of data at a time?

      1 reply 0 retweets 0 likes
    5. matthew venn‏ @matthewvenn 30 Sep 2019
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      Replying to @zipcpu @hackaday and

      I have the FFT setup with 320 bins, one for each pixel along the bottom of the screen. Every screen update the display is scrolled up one pixel and new results written to the bottom line.

      1 reply 0 retweets 2 likes
    6. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 30 Sep 2019
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      Replying to @matthewvenn @zipcpu and

      Now I am curious. Assuming it's a Radix-2 FFT, how can you have a number of bins that isn't a power of two?

      2 replies 0 retweets 1 like
    7. matthew venn‏ @matthewvenn 30 Sep 2019
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      Replying to @oe1cxw @zipcpu and

      it's a sliding DFT https://www.comm.utoronto.ca/~dimitris/ece431/slidingdft.pdf …

      2 replies 0 retweets 4 likes
      Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 30 Sep 2019
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      Replying to @matthewvenn @zipcpu and

      Ah. So it's not an FFT. ;D

      8:31 AM - 30 Sep 2019
      • 3 Likes
      • Niels Moseley Piotr Esden-Tempski @esden@chaos.social matthew venn
      0 replies 0 retweets 3 likes

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