Krishna Swaroop Dhulipalla

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Krishna Swaroop Dhulipalla

Krishna Swaroop Dhulipalla

@poorawsanhsirk

Building Satellites at @PixxelSpace | BITS Pilani '21

Bengaluru, India Katılım Nisan 2015
628 Takip Edilen730 Takipçiler
Krishna Swaroop Dhulipalla
Krishna Swaroop Dhulipalla@poorawsanhsirk·
New customers, new missions!! 🚀🚀
Pixxel@PixxelSpace

We’re excited to announce that we’ve been awarded a contract by the U.S. National Reconnaissance Office (@nro_gov) under the Strategic Commercial Enhancements Commercial Solutions Opening. Using our on-orbit Firefly constellation, we will demonstrate how hyperspectral imagery can provide spectral insight into materials, conditions, and activities that conventional imaging cannot reveal. ✨ pixxel.space/news/pixxel-aw…

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Gareeb Scientist
Gareeb Scientist@gareebscientist·
Very cool announcement from pixxel and sarvam, but I'm more curious about this new satellite bus, It seems to have 2 imaging telescopes? 3? Or is it laser communication? Lot of questions
Gareeb Scientist tweet media
Pixxel@PixxelSpace

Today, we’re taking a step toward truly galactic-scale capabilities. 🚀 We’re partnering with @SarvamAI to bring sovereign AI into orbit aboard India’s first orbital data centre satellite, a pathfinder mission bringing datacenter-class GPUs and high-performance remote sensing together in space. Built and operated by Pixxel, with Sarvam providing the AI backbone, the demonstrator marks a step toward making orbital data centres real, operational, and scalable from India. May the 4th be with us all! ✨

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zukki.flac
zukki.flac@yukuyuku4123·
KiCanvasっていうKiCadのWebビューワーまじ神 後輩の回路確認わざわざデータダウンロードしなくて済むし軽いしまじで神 ほんと神(語彙力の欠如)
zukki.flac tweet media
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Adam Taylor
Adam Taylor@ATaylorFPGA·
Image processing and a little fun with the Exostiv probe
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StableMab
StableMab@StableMab·
@i2cjak How is it radiation tolerant ? Is it due to the 18nm node ?
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i2cjak
i2cjak@i2cjak·
look at how fucked up this bga is. good lord. but cool part, ST's newest w/ machine learning accelerator, on die NVM, 18nm. very radiation tolerant. in use on Starlink ALREADY
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i2cjak
i2cjak@i2cjak·
lowkey Europe was right for mandating USB-C for everything
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Krishna Swaroop Dhulipalla retweetledi
Prashant Bhushan
Prashant Bhushan@pbhushan1·
Dozens of accounts on social media have been blocked & hundreds of posts have been taken down on the orders of the govt, just because they were critical of the govt or Modi. This is on top of control over mainstream media. This is in many ways worse than the Emergency.
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will whang🌻
will whang🌻@will_whang·
and still no full datasheet available, fuck you
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will whang🌻
will whang🌻@will_whang·
This is perfect - I was looking for NTB PCIe Switch for a small NUC PC cluster, and this is basically a dedicated PCIe network switch if you think about it.
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i2cjak
i2cjak@i2cjak·
love when board bring-up has basically zero hiccups. amazing.
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i2cjak
i2cjak@i2cjak·
gun pointed at yo head, favorite PCB thickness
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Zack's Lab
Zack's Lab@zackslab·
I FORMALLY CHALLENGE THEE (@i2cjak) TO AN EE DESIGN CHALLENGE (rendered in the TONE of an i2cjak wannabEE ARTICLE): ANON… I HAVE A PROPOSAL. a DESIGN CHALLENGE. a TEST of SKILL. a TEST of GRIT. a TEST of whether you are a REAL ELECTRONICS ENGINEER or merely someone who COPY PASTAS application notes written by some TI intern named KYLE. let me set the stage... imagine a world where you need to convert 12v into 48v. this is not a crazy number. this is just BOOSTING a voltage. people have been doing this since before your GREAT GREAT grandparents knew what a transistor was (i2cjack just turned 14). and yet… what does an i2cjak do? he goes to MOUSER (he was banned from digikey) and he types: "BOOST CONVERTER" he grabs some $6.37 switching regulator IC that hardly has any stock, has 87 internal op amps, slope compensation, cmc, undervoltage lockout, soft start, thermal shutdown, brownout detect, a coffee maker, and a SMALL GOBLIN that tunes the loop compensation FOR HIM. he then looks himself in the mirror and calls himself A HARDTECH ENGINEER. he slaps down one inductor, a diode, some caps, and a prayer. NO. not today anon. THE CHALLENGE: • design a 12v to 48v dc/dc converter • highest efficiency @ 10A/480W wins but there are RULES. and they are CRUEL. RULES: • NO SWITCHING REGULATOR ICS • no boost controllers • no flyback controllers • no "smart power stages" • no little black boxes that say "PWM controller" on the datasheet • if the datasheet contains the phrase "switching regulator" you are DISQUALIFIED ALLOWED COMPONENTS: • a microcontroller • gate drivers (maybe) • power transistors • diodes • discrete analog • discrete logic • passives THE CONTROL LOOP: • must be written entirely BY YOU • no OTS analog compensation network that MAGICALLY stabilizes everything YOU WILL: • fab the board at a fab house of your choice • solder it YOURSELF • measure voltages YOURSELF • measure currents YOURSELF • perform step response YOURSELF • perform load sweeps YOURSELF • measure EFFICIENCY YOURSELF • you know, REAL EE SHIT YOURSELF like the founding fvcking fathers intended. ANY TOPOLOGY IS FAIR GAME: • boost • flyback • forward • pushpull • interleaved • some cursed topology you invented at 3am i do not care. but it must convert 12v to 48v. and it must fvck. SCORING: highest measured efficiency @ 10A wins (adjusted for BOM cost). WHY THIS IS FUN: because suddenly all the stuff those nice little regulator ICs do for you becomes YOUR PROBLEM. you must engineer. ELECTRICALLY. things like: • current limiting • duty cycle saturation • loop stability • slope compensation • dead time • gate drive timing • startup behavior • transient response EXPECTED OUTCOMES: • REAL EE is harder than it looks, i might fail. you might fail. BUT WE ALL LEARN. • writing a control loop from scratch is CURSED. • switch node ringing is DEMONIC. and guess what i2cjak, the inductor you'll pick will be WRONG!!! your efficiency will mysteriously drop by 15% because physics HATES YOU!!! but, you are a MANIAC. and you will eventually produce something BEAUTIFUL even IF it is covered in your BLOOD, SWEAT, AND TEARS. so anon. do you ACCEPT the challenge? or will you retreat back to your TPS5430 application notes like a frightened little B*TCH? MAY THE SUPREME WIZARD OF ELECTRONS WIN!!!
Zack's Lab tweet media
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