cnlohr @cnlohr Twitter profile

Last Seen Profiles

@ChineseTheatres

@TraderMagus

@KMKLmomen0304

@M1cahizawesome

@Coach_Stone_MT

@ec0ates

@magrkeu

@bfunocontext

@Coach_Cloer

@AndrewTDraper

@JerasIkehorn

@nesyouELK

@DLRWaves

@coo11breeze

@Mid20Rag3r

@pain_general

@GambiaRedCross

@eddieandbee

@EliEllis2022

@charliedeets

@ID_ARSENAL

@pmxfany

@jmomdphd

@MichLKosinski

@HerefordRaces

@louceph

@KayvonOjulari

@tenaciousd

@jammdung

@AlbroBrady

@Ticket_Help2022

@ciaolyx

@Giantgingervet

@OfficialSuo

@rexy_

@_tsumi_ki

cnlohr

@cnlohr

1 year

I route my circuit boards like I live my life.

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cnlohr

@cnlohr

1 year

Someone just posted this to my Discord. I can't find the original source.

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cnlohr

@cnlohr

11 months

These new lcds from ronboe are neat.

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cnlohr

@cnlohr

1 year

I am starting to understand how some people dedicate their lives to these works of art. It's so beautiful to see the bit of the UV haze around the digits.

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cnlohr

@cnlohr

2 years

I can't believe it only took 3 days to hack this technique together. I'm working on a new technique to do raycasted realtime illumination (performantly!) in #VRChat

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cnlohr

@cnlohr

2 years

This #vrchat world is awesome. Great work by Killerbomb.

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cnlohr

@cnlohr

2 months

Such a massive undertaking for surprisingly little code I'm so thankful for all the help of my friends who really helped make this happen. Watch til the end to see just how insanely far you can send messages without a radio.

How far can I broadcast LoRa packets WITHOUT a radio? - LoLRa

Code/Writeup/Resources: https://github.com/cnlohr/lolraPatreon: https://patreon.com/cnlohrMemes, in order of appearance: Tiny Paper Senior Chang, Trollface R...

www.youtube.com

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cnlohr

@cnlohr

1 year

Something about this makes me feel like it shouldn't work. Like why do they even make flyback transformers that are 3.2mm x 2.5mm??? I also can't believe I didn't blow anything up.

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cnlohr

@cnlohr

1 year

You guys at #JLCPCB are a bunch of mad lads.

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cnlohr

@cnlohr

3 months

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cnlohr

@cnlohr

2 months

PCB Routing is a reflection of one's inner self.

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cnlohr

@cnlohr

3 months

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cnlohr

@cnlohr

1 year

I got USB for the #CH32V003 down to 1920 bytes. It doesn't do *anything* yet. But, I am within shooting distance of turning this thing into a 10¢ truly stand-alone Arduino.

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cnlohr

@cnlohr

3 months

It's not.

Miguel A. Vallejo (EA4EOZ)

@ea4eoz

3 months

The amount of Bluetooth signals in 2.4 GHz today is simply incredible. I don't know how WiFi is still working.

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cnlohr

@cnlohr

2 years

I lost interest in ESP's because the IDF environment took 20-30 seconds to test a 1-line change Today, I fixed it. 250ms from "save" to code running on my ESP32-S2 (with logging over the built-in USB). I can finally start getting work done.

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cnlohr

@cnlohr

2 years

I've spent the last year in VRChat with every waking, non-work moment of my life. I adventure into the lives of the people who call this new digital universe their home. Join me for this journey!

A Deep Dive into VR - A new Social Reality

Join me on my one year journey descending deep into the world of VRChat. It was an incredible insight into the lives of hundreds of thousands of people who ...

www.youtube.com

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cnlohr

@cnlohr

1 year

Does anyone know how to get China to pump out your dev boards and dump them onto aliexpress, etc? I have some gerbers for CH32V003+USB, I just don't know who to send them to to get this in the hands of more people!

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cnlohr

@cnlohr

3 years

They're almost to 1M subs. I hereby request that when @summoningsalt reaches that 1M they release a summoningsalt-style video about the path to 1M subs.

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cnlohr

@cnlohr

6 months

Turns out taking the gaussian out of #GaussianSplatting is pretty wild. And it's even better in #VRChat with #AudioLink . World link in github page.

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cnlohr

@cnlohr

7 days

I think I know what my summer project is going to be this year. At :09, you can see it calculating all the orbits on the GPU.

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cnlohr

@cnlohr

1 year

Wow! A single chip solution for Li-Ion/LiPo charging, management, and power path to a load on-board for $0.30 in a ok quantity. It even supports sleep mode and waking! And all within 1.54x1.54mm. Let's see if I can get @jlcpcb to let me use them..

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cnlohr

@cnlohr

1 year

IT ENUMERATES! Still need lots of work to make a self-hosting arduino on this 10¢ #riscv , the #ch32v003 with the bit banged stack! Thank you so much to the whole team that came together to make this a reality.

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cnlohr

@cnlohr

8 months

Holy cow. Everything you ever needed to learn about Makefiles, in one place.

Makefile Tutorial by Example

makefiletutorial.com

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cnlohr

@cnlohr

10 months

This is, in its entirety my #ch32v003 #riscv chip bring-up, bit-banged USB protocol PHY+stack, and bootloader. Right now at 1,892 bytes. I know a few more bytes can be taken out, but at this point, I just don't care enough.

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cnlohr

@cnlohr

11 months

I love getting to know the #ch32v003 inside and out. Thanks @solderingmax / /

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cnlohr

@cnlohr

4 months

I am 99.9% sure running OLED displays in vector mode this hard voids any and all warranties, implied or otherwise.

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cnlohr

@cnlohr

1 year

90 IQ: "Engineers can figure out how to get TX/RX correct. 900 IQ: "Just add a bit so people can flip it in software." Impressive stuff on this #ch32v003

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cnlohr

@cnlohr

1 year

Yes! With these new tweaks, my 26kB #RISCV emulator boots #linux in 144ms. (This video is real time)

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cnlohr

@cnlohr

1 year

The best and most comprehensive webpage describing NTSC and PAL timing, levels and generating the signals has gone offline. Thankfully, I kept a copy around and have re-published it on my channel 3 project.

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cnlohr

@cnlohr

3 years

Que?

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cnlohr

@cnlohr

1 year

Another Find! 30¢ 3-axis accelerometer in a 2x2mm package. It's the updated version of what we use on the #magfest #swadges . 14-bits, 2g to 32g range, powerful I2C commands. Even has wake-on-motion features. Available and in-stock at @jlcpcb !

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cnlohr

@cnlohr

7 months

After working on 30+ firmware projects with I2C interfaces, this is what I've found

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cnlohr

@cnlohr

1 year

#ch32v003fun now supports build, printf, debug, etc. in VS Code over the single-wire debug interface (no UART!) Big shout out to @tanjent and their - a RPI Pico programmer Note: Demo is with the ESP32-S2 programmer. LinkE Support hopefully coming soon?

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cnlohr

@cnlohr

9 months

The IO front-end and ADC hardware in the #CH32V003 make for an shockingly good, extremely high-speed capacitive touch sensing solution. It's so good, I can detect finger presence several mm away, if I over-sample some.

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cnlohr

@cnlohr

7 years

Favorite quote from @SwiftOnSecurity is still "Git is like if the creator of Linux made a revision control system."

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cnlohr

@cnlohr

20 days

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cnlohr

@cnlohr

1 month

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cnlohr

@cnlohr

1 year

If creators in your metaverse don't make worlds that look like this, you're doing your platform wrong.

Mawntee

@mawntee

1 year

I'm so hyped to finally see this all come together and actually be put to use! This is that LCD screen shader I've been working on for the last little bit, along with a modified fog system that samples the colour/brightness from the video texture.

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cnlohr

@cnlohr

2 years

Making lots of progress, but the week is upon us. Figured you guys would want another teaser.

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cnlohr

@cnlohr

6 years

@BenKrasnow I have some good test pieces for you if you're interested.

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cnlohr

@cnlohr

2 months

That was fast!

Joey Hiller 🎈

@jhiller

2 months

Not saying you should, but you could. Esp8266 sending data over Helium.

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cnlohr

@cnlohr

1 year

It's not #esp32 - but for 10¢ on the #ch32v003 , I will take a stable parallel DMA output capable of controlling 8 GPIOs 100% interrupt driven in software, at 4MBytes/s. This is a huge boon for complicated LED controllers, motor controllers, and systems that need weird protocols.

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cnlohr

@cnlohr

1 year

@Bit111111 I only use 2-layer boards. But the trick is people can't reverse engineer it if you give anyone who tries an aneurysm.

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cnlohr

@cnlohr

8 years

#esp8285 dev board running #espusb on an @oshpark board. Rev - tested + works. Rev A (Smaller, yet!) soon!

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cnlohr

@cnlohr

1 year

What happens when you emulate an emulator emulating #linux on a #riscv CPU? [sound on]

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cnlohr

@cnlohr

6 years

Doubled resolution + improved quality. ~144 bytes/frame. I think I'm reaching the limit to what my mind can do on this problem. It might be time to port it to the embedded device, now that the video is <1MB, huffman tables and all. Thanks again @inversephase

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cnlohr

@cnlohr

1 year

#ch32v003fun now works, in windows, on vscode, with the WCH Link-E! That $10 after shipping devkit. Debugging programming AND printf over debug interface! Special thanks to karlp and for their reverse engineering work and cw2 for identifying the important bits.

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cnlohr

@cnlohr

5 years

Just came across this video on Ali Express... and I was wondering how the WS2812's were so cheap.

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cnlohr

@cnlohr

5 years

So, this just happened. A modern i5 running chromium visiting jslinux, emulating an i686 running windows 2k, opening firefox running an older version of jslinux emulating an i586, running hello world in Linux 2.6. IDK why they let me touch computers.

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cnlohr

@cnlohr

1 year

Contact, between my #esp32s2 and my #ch32v003 over the single-wire-debug interface. And the ESP didn't skip a USB heartbeat!

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cnlohr

@cnlohr

1 year

Destructive testing on my 52¢ 180V flyback went well. I had to turn off both safeties to drive it up to 400V. And even then it was surprisingly not that eventful.

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cnlohr

@cnlohr

2 years

With the inclusion of OSC, #vrchat is going to go off the hook in the coming weeks. Prepare yourselves for some absolutely memetastical tomfoolery.

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cnlohr

@cnlohr

2 years

The #vrchat portal is up at #MAGFest2022 !

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cnlohr

@cnlohr

11 months

Someone, PLEASE turn this into a 2 channel analog + 16 channel digital logic analyzer. The chips are $5 ea. There are great 40 MHz flash ADCs for $3. Like please. I'm just so busyyyy right now.

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cnlohr

@cnlohr

3 years

Request for comment: A planned webpage-based, self-contained IDE for the ESP32-C3. Imagine Arduino, but with no software to install, just a webpage served up by the dev board giving you a full IDE. Comments welcome! Anyone who can help out, even more so!

GitHub - cnlohr/espwebc3: An in-browser integrated development platform for the ESP32-C3

An in-browser integrated development platform for the ESP32-C3 - cnlohr/espwebc3

github.com

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cnlohr

@cnlohr

8 months

It's so cool that DMA is standard on all the cheap CH32V RISC-V processors

GitHub - bitbank2/CH32V_Color_LCD: A set of functions to control Sitronix color LCDs on CH32V...

A set of functions to control Sitronix color LCDs on CH32V RISC-V MCUs - bitbank2/CH32V_Color_LCD

github.com

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cnlohr

@cnlohr

11 months

"We don't expect software to work anymore." - Jonathan Blow

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cnlohr

@cnlohr

1 year

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cnlohr

@cnlohr

1 year

Interesting part of the day. GD25LE64ELIGR, a 64Mbit flash available in this wacky itty bitty WLCSP. There are also more WLCSP flashes coming out recently, if you want to save some room. And they are mostly JLCPCB compatible. Sadly most are *NOT* 3.3v.

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cnlohr

@cnlohr

4 years

OK! I am mega digging @kicad_pcb 's Spice implementation. This is soooo much better than the online part sims. KiCad Spice = Joy.

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cnlohr

@cnlohr

1 year

Now you guys get to see what all my sneak peeks were about! I now can drive nixie tubes with a totally software-defined flyback on a 10¢ #riscv , the #ch32v003

Powering a Nixie Tube from USB with a 10¢ RISC-V, the CH32V003

Running a Nixie Tube off USB with a software-defined flyback power supply running on the CH32V003 RISC-V microcontroller.Console Font: https://audiolink.dev/...

www.youtube.com

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cnlohr

@cnlohr

1 year

Still chugging along with my #ch32v003 open source tool chain. Now I have printf working over the single-wire debug interface with an #esp32s2 . Hopefully more programmers and demos soon! Tiny. Fast. Simple. That's what I'm gunning for with this.

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cnlohr

@cnlohr

4 months

This is my take on the "OLED Vector Scope" Driven from chrome, running a #webhid page to #rv003usb running on a 10 cent #ch32v003 #riscv driving with DMA. I have to find a way to to record this, since there's no real flicker exception with motion.

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cnlohr

@cnlohr

1 year

At #magfest this year, we used an #esp32s2 on our Swadges and were able to play with people in #vrchat .

Game Made for VR on a $1 Processor?

I document the process of making a multiplayer-cross-platform video game that has parts that run on everything from a tiny microcontroller to a high end VR s...

www.youtube.com

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cnlohr

@cnlohr

4 years

Lesson is: Never trust anyone except yourself when it comes to i2c. Don't trust hardware i2c, don't trust other people's software i2c, and most of all, never ever trust the spec written by Philips.

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cnlohr

@cnlohr

4 years

These color e-Paper displays from @waveshare00 are unreasonably good.

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cnlohr

@cnlohr

1 year

Not reliable yet. But it looks like it's going to be a cakewalk to be able to use the 10 cent #riscv , the #ch32v003 with just #GCC and #Linux without any proprietary compilers or flashing tools.

GitHub - cnlohr/ch32v003fun: An open source software development stack for the CH32V003 10¢ 48 MHz...

An open source software development stack for the CH32V003 10¢ 48 MHz RISC-V Microcontroller - as well as many other chips within the ch32v/x line. - cnlohr/ch32v003fun

github.com

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cnlohr

@cnlohr

1 month

Wirth's law: software is getting slower more rapidly than hardware is getting faster. That was 1995

Wirth's law - Wikipedia

en.m.wikipedia.org

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cnlohr

@cnlohr

2 years

It's unbelievable how compelling LTC's are in VR.

Vistanz / ビスタンズ

@JLChnToZ

2 years

Testing LTCGI by Pi, results on linearly transformed cosine algorithm looks very great, but it is kind of hard to setup with existing video players, scripting required here. #VRChat

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cnlohr

@cnlohr

1 year

Do you know what's better than a deep and abiding understanding of operator precedence in your language of choice? Putting parentheses around things.

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cnlohr

@cnlohr

11 days

Today in modern software is broken: Why can't my alarm clock use the MySQL server? Why does an alarm clock need a MySQL server?

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cnlohr

@cnlohr

1 year

The examples for (a minimal SDK) are growing as more engineers pile on to explore the wacky, wild, and cheap #ch32v003 by @WCH_TECH .

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cnlohr

@cnlohr

8 years

#esp8266 #espusb Software-only USB stack for the ESP supports self-flashing! No serial dongle!

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cnlohr

@cnlohr

1 year

Why yes. My USB device identifies as a frog.

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cnlohr

@cnlohr

9 months

A Huge thanks to @WCH_TECH for making some of their chips "unbrickable." Adding -u for "unbrick" to minichlink has got to be the best feature to anything I've added to-date.

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cnlohr

@cnlohr

4 years

I seriously don't get why they gave me permission to touch computers.

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cnlohr

@cnlohr

6 months

So many projects are starting to pop up using the #ch32v003 . It's such a magical and fun part.

🔊 CH32V003 (10¢ RISC V part) Sound System

UPDATE: good-vibes audio library available here: https://github.com/spot1984/good-vibesI haven't written documentation but the code is documented and structu...

www.youtube.com

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cnlohr

@cnlohr

3 years

Sometimes it's fun to use tools that won't be feasible for a few years to make effects in #vrchat just to see what the future will be like.

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cnlohr

@cnlohr

3 months

This has got to be one of the smallest #ch32v003 projects for some time. Great job, Mitxela!

LED Matrix Earring

More info: https://mitxela.com/ledstudhttps://patreon.com/mitxelahttps://paypal.me/mitxela

www.youtube.com

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cnlohr

@cnlohr

1 year

Mark my words. We will prove P = NP before we solve the problem of finding a good way to write a GUI.

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cnlohr

@cnlohr

4 months

The people who made C++ awful are leaving C++ to go to C, and doing exactly the same stuff that made C++ awful. Totally unaware that the adding of features du jour will pollute it all the same.

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cnlohr

@cnlohr

4 years

I think I just had the first "mic drop" in my life as an engineer. Project has huge i2c problems. I come by, delete everything i2c, and drop in my C software driver. Everything works 100%.

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cnlohr

@cnlohr

2 years

Some day this will be my home, not just my two-weeks-per-year.

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cnlohr

@cnlohr

4 months

Computer Engineering: Because if you can't rebuild all of a computer, OS and apps yourself in the event of a near extinction event from sand and copper ore, what is even the point?

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cnlohr

@cnlohr

1 year

"All sensors are temperature sensors, some measure other things as well." - @logicalelegance

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cnlohr

@cnlohr

2 months

"Using goto to jump to arbitrary points in the written control flow is bad practice. You should use RAII and exceptions to do that instead so people reading your source code can't tell it's happening and tell you off for it." - @atomalfie

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cnlohr

@cnlohr

1 year

Ever been annoyed by how complicated the specific ins and outs of the version of #python you need to install to flash #esp32 microcontrollers? Look no further. CPQ has you covered. Flash your esps using this extremely simple C flasher util.

GitHub - cpq/esputil: ESP flashing utility

ESP flashing utility. Contribute to cpq/esputil development by creating an account on GitHub.

github.com

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cnlohr

@cnlohr

6 years

Ok, seriously @TXInstruments ... This proliferation of pin 1 obfuscation in the parts industry and it's got to end... Your datasheet for your TPS22810DBVR has an indicator for where pin 1 is supposed to go, and this is by far the most cryptic I've ever seen. I miss the dot.

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cnlohr

@cnlohr

6 years

Absolutely floored by the ESP32's AES engine. 9 MB/s AES 256 CBC using the canned function straight from the IDF. Here's an example! #esp32

Example of using hardware AES 256 Crypto in CBC mode on the ESP32 using ESP-IDF

Example of using hardware AES 256 Crypto in CBC mode on the ESP32 using ESP-IDF - esp32_aes_example.c

gist.github.com

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cnlohr

@cnlohr

3 years

I wonder if @bgolus really appreciates just how he has passed into memehood by him single-handedly making Unity usable through his forum posts.

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cnlohr

@cnlohr

3 months

POV: When your company's silicon errata is longer than the datasheet.

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cnlohr

@cnlohr

3 years

My schedule is finally free. 𝕀𝕥 𝕚𝕤 𝕥𝕚𝕞𝕖 𝕗𝕠𝕣 𝕥𝕙𝕖 ℂ𝟛

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cnlohr

@cnlohr

7 years

Printed at home. 7mil/7mil, 0.4mm BSC Pitch. Zero touchup needed on the glorious #esp32 . <3 Printing at home.

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cnlohr

@cnlohr

1 year

I am plagued to be a creator. I think #VRChat is way more interesting than any of the electronics junk I do. But nooooo. My engagement numbers with electronics projects are way higher. It's not like either hobby is more expensive than the other in the long run.

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cnlohr

@cnlohr

1 year

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cnlohr

@cnlohr

6 months

I've been saying it for years - no need to at a peripheral list to infer processor features. Just use your imagination. Great job @eeucalyptus

Adding Temperature Sensor Functionality To The CH32V003 MCU

As cheap as the WCH CH32V003 MCU is, its approximately $0.10 price tag looks far less attractive when you need to start adding on external ICs for missing basic features, such as temperature measur…

hackaday.com

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cnlohr

@cnlohr

1 year

In VR, Do you prefer:

Snap Turn

622

Physically Turn Your Body

860

Smooth Turn

1138

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cnlohr

@cnlohr

3 years

It may have taken 2.5 years, but Cypress spite coded their own version of my spite coded FX3 logic analyzer - except theirs is way better.

EZ-USB™ FX3 Explorer kit as 16-channel 100 MHz logic analyzer with sigrok PulseView - KBA233652

The EZ-USB™ FX3 Explorer kit can be used as a 16-channel 100 MHz USB 3 logic analyzer with sigrok PulseView. (Note that the following steps are applicable for any FX3 device. Explorer kit is used in...

community.infineon.com

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cnlohr

@cnlohr

4 years

ESP82XX now runs in Windows Subsystem for Linux. I can compile my ESP8266 Minecraft server in Windows!

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