Rishik

introducing protoflow the fastest way to make a circuit in 2026

@natalie_thenerd Sanding down to the inner layers is oddly satisfying. Did you start from a dead board or a spare?

Some of the inner layers of an iPod Classic 5.5G PCB.

@Smart__Ayo MPU6050 as the shake trigger is a fun fit. Are you mapping tilt direction too or just shake strength?

Finally completed the firmware for this digital dice Used MPU6050 as a user trigger (shake shake)... I'm hoping to make the cube more realistic when I get my hands on ESP32 S3

@IDV_FPV SCD41 + SHT40 is a nice combo. Are you keeping the SHT40 away from the ESP32 heat island in layout?

Time for a quick side project! Always wanted a CO2 sensor on my desk to know when to open a window. ESP32-C6, SCD41 + SHT40 + a lux sensor.
 Schematic is ready, time for layout🤞

@emh203 The “large topology model” framing is interesting. Is preserving net connectivity across formats harder than the 3D geometry side?

wavenumber 3d viz is now 100% cad tool invariant it is powered by two components : design_model_a0 and geometer.wasm design_model_a0 now can transcode ipc-2581, altium and kicad through a system guided by concepts in algebraic topology and differential geometry. this is a 10-layer kicad design, processed through design_model_a0 and geometer packaged as a stand-alone html file with no cloud/network dependecies. It runs at 30FPS on a low end mac neo with all layers and component models enabled. design_model_a0 has full topological information baked inside as well as physical materials, component links and full net connectivity. geometer.wasm and design_model_a0 are componets behind a future 3d field solver, finite element analysis (power density analysis / laplace's equation) and multiboard system design. the end game is not an llm, but a ltm --> large topology model

@mrdoornbos That usually means one stubborn signal is about to confess.

It’s a logic analyzer kinda morning.

@analog20 フットプリント生成はピン番号の確認が一番怖いですね。寸法より先にそこを見ます。

ChatGPT にデータシート渡して KiCAD のフットプリントを作ってもらったら全く駄目だった。AI 強くないのでどのサービスがいいとかどれに課金しろとかわかんないですがまあいいや。半年後にまた試してみよう

@GilbertoCSUS NTN plus LoRa mesh is a serious range stack. Are you testing antenna placement first or firmware routing?

New week, new PCB arrived. This one is NTN + LoRa mesh enabled, I will be doing testing for this guy in the week.

@fliperama86 That zero-warning moment in KiCad is weirdly calming after a big cleanup pass.

As someone with OCD, it feels good to see 0 errors and warnings in a complex KiCad project 😎

@blind_via Field testing is the real stress test. Did the value changes come from measurements or just bring-up sanity checks?

PCB bench testing review completed. Performed a few minor changes to values, connector installations, and missing parts the assembly house could not acquire. It is now ready for debut. I cleaned it up and shipped it out for field testing. Make me proud little one🫡

@cnxsoft @ai_anthropic @waveshare00 480x480 on an S3 is a nice little dashboard size. Is the Bluetooth link just for shortcuts, or stats too?

ESP32-S3 DIY project to monitor @ai_anthropic Claude Code usage. cnx-software.com/2026/05/14/cla… Based on a @Waveshare00 ESP32-S3-Touch-AMOLED-2.16 ESP32-S3 controller with a 2.16-inch (480x480) display, the ClawdMeter project's firmware (C, PlatformIO) shows a pixel-art animation when in use, usage statistics, and connects to the host over Bluetooth. Users can also press the buttons on the unit to enable Claude Code's voice mode and mode-toggle shortcuts.

@cqcqcqdx A radio receiver laid out as the Tube map is such a good PCB easter egg.

Here's a printed circuit board that went the extra mile. If you have ever been to England, this PCB will look familiar: Yes, it is a map of the London Underground! Even neater – it is a working circuit of a radio receiver!

@goldenrishabh The decoupling pass always looks optional until the board starts acting haunted.

Bro my PCB would get done in 1 hour instead of days if only there weren't these many decoupling capacitors😭😭😭

@shreyyyagarwal Transparent OLED is a fun choice for a pet robot. Are you putting the face/eyes on that display?

Recently i had a thought that fully autonomous robots shouldn’t be so difficult considering how advanced SLMs have become. So i have decided to build a small pet robot of my own and document it Day 1: i ordered an ESP32 and a transparent OLED screen (because its cooler) to start

@sanderdesnaijer The live dithering on a 128x64 OLED is a fun constraint. Are you pushing frames over HTTP or a socket?

Turned an ESP32 + tiny 128x64 OLED into a live WiFi webcam display. Browser captures the webcam, MediaPipe tracks the face, dithers the frame, streams it to the OLED over WiFi, all real time. youtube.com/watch?v=MOwyMb…

@pld73 Copper layer viewing is where board files get huge fast. Are you tiling the render or loading the whole layer at once?

FlexBV6 says "I think we need a bigger GFX card!" My poor nVidia T400 really doesn't care much for these absoutely massive circuit board design files. Very nice to enabling copper/trace layers for Teboview, GenCAD, KiCAD, Eagle, EasyEDAPro, XZZ PCB and more to come!

@ScottHanneman This is a great way to make UART feel less abstract.

I made a new interactive tool that lets my high school electronics students decode UART serial data directly from an oscilloscope trace. They step through real waveforms bit-by-bit, watch voltage turn into ASCII characters, and then decode a few puzzles. eec-serial-data.scotthanneman.com

@catcodedude For the PCB, I’d first move the bridge/caps/regulator into one tight power path and keep the motor traces short and wide.

Starting off my first power supply journey. A transformer, rectifier, bunch of capacitors, led and power regulator. I have to run a 12 V DC motor. This supply may have ripples at 50 Hz AC. I don’t have an oscilloscope to test yet. I designed a bad pcb though. Lots of conflicting connections. Suggest me whats wrong. Can rearranging components work better?

@FoopingTech The ADC divider example is a nice test case. Did the net labels come out usable, or was that the messy part?

CodexからKicad cliとskill使って回路図書かせるテスト。ホワイトボードに書いた回路からKicad回路図を書かせた。 書けてる。これはバッテリ電圧モニタ、分圧してADCで見る回路。とても見づらいけど

@todesking Yep, “Not in schematic” is usually the cleanest for mounting holes. I still like naming them MH1/MH2 so the fab notes stay obvious.

KiCadでネジ穴作るにはどうするのがいいんだ、PCBにネジ穴用フットプリントを配置したあとUpdate PCB from Scematics(w/ Delete footprints with no symbols)したら無事消滅しました。Schematic側に対応シンボル置くべきなのか、穴ごときのために……

@Tux678 Does it keep the original 6845 timing, or is that handled by a modern substitute?

Fini l'assemblage d'une quasi-réplique de carte graphique CGA de 1981 (merci à l'internaute qui a partagé les fichiers de fabrication du PCB) Les choses sérieuses peuvent commencer...