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Spencer

smaroukis@hachyderm.io

<p>I like the outdoors and electronics among other things. 
📍 Tokyo, Japan | <a href="https://www.tokyohackerspace.jp" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://www.</span><span class="">tokyohackerspace.jp</span><span class="invisible"></span></a> on Tuesdays
🔗 blog - <a href="https://maroukis.net" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://</span><span class="">maroukis.net</span><span class="invisible"></span></a></p>

Posts

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    Two full days of learning embedded C toolchains to build a blinky without STM32CubeIDE and my head is spinning but my blinky is flashing 😅 #embedded #electronics #programming tldr - gen. makefile and HAL code with CubeMX - download local versions of arm-none-eabi-gcc (dl via website) + make (homebrew) + openOCD (homebrew) - edit Makefile and some VScode plugin configs for Intellisense include paths This video ended up being the way to go: https://www.youtube.com/watch?v=PxQw5_7yI8Q

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    Updated my outline of the seven segment display driver project - https://maroukis.net/sev-seg/ Looking for feedback if you&amp;#39;ve done anything with custom firmware driving matrix displays! #leds #led #firmware #stm32 #electronics #arduino

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    @PlumpCat@infosec.exchange lol &amp;quot;not simple to spin up stuff with CubeIDE&amp;quot; is an understatement 😅

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    New proj for those who need motivation (ahem looking at you, me). https://maroukis.net/10k-hours/ might make a PCB and enclosure for it, maybe make it into a necklace? too much? #electronics #leds #7-seg #maker #arduino

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    @nwchapman REI is a long way away from a co-op for sharing mountaineering equipment... they are a capital b Business. Maybe it&amp;#39;s time to return to roots.

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    Seven segment matrix display project update! Prototype boards have been assembled and mechanically everything fits (I checked footprints 3x 😅) See here for more: https://maroukis.net/sev-seg-1 #electronics #pcb #maker #hacking #diy #projectlog #p39

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    3 bit binary counter with 555 and 74LS293 For 3 bit counter use only the divide by 8 section leaving Q0 unconnected and just use Q1...3 with clock input on CP1 Don&amp;#39;t forget to connect at least one MR pins to ground like me! #electronics #diy #maker #hacker

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    The descriptions of &amp;quot;noise shaping&amp;quot; in Sigma-Delta ADCs always bugged me; how and why is the noise pushed up into higher frequencies? This block diagram shows it easily. At f ➡️ 0 the signal term goes to X and the noise term goes to 0. At high f it is the opposite. Effectively it is a low pass on the signal and a high pass on the noise. https://til.maroukis.net/attachments/TIL---Sigma-Delta-ADCs-1739277561096.jpeg More at: https://til.maroukis.net/The-black-magic-of-noise-shapin...

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    Just released a python script on github for inserting pdf pages as images in a markdown document (i.e. for use in #obsidian or #logseq ) 🔗 https://github.com/smaroukis/parse-pdf-to-markdown I&amp;#39;ve found I take a lot of notes in Notability but I never review them .. Hopefully having this automated will help #python #productivity #programming