#circuits — Public Fediverse posts

OK. I present V1.0.8 of "Mellon”

I cannot believe I nearly hit "Build" last night on this.

I had to rejig the coil antenna placement to keep its net as short as possible (ensuring we don't have any interference).

I had to tweak my crystal and pair of smoothing caps, something @anachrocomputer warned me about.

L3 is at 90º to the antenna, so that *should* minimize interference. I have the keep out zones. I have kept Vias to a minimum. And while some of my keep out zones do have # traces, I think 'm good. #KiCAD #maker #Circuits

Ok. It's time to roast this circuit.

My tonneau cover has buttons on the rear of the truck that only operate IF it detects a remote OR a smartphone is actively connected to it via BLE. The BLE app requires you to have the app front and centre to work.

I also have no way WITHIN the truck to open or close the rear - unlike my previous unit, which used Homelink.

I have Phone as a key (PAAK) and keyless entry in to the vehicle, so I want a solution that doesn't rely on the phone or physical keys.

The idea: I'm going to use an ESP32 and CAN Transceiver to monitor my vehicle for CAN status messages indicating the vehicle is unlocked. Then, I can use the ESP32 to mimic a smartphone connection to a tonneau cover I have that ONLY works with a remote and/or smart phone app.

When the CAN bus sees the vehicle is unlocked, the ESP32 will connect to the BLE connection on the tonneau as if it's a mobile phone, using BLE pairing (key/pass handshakes).

Then it will allow the rear physically wired buttons to operate the tonneau cover, because the tonneau cover will go "There's an active phone connected”.

(I have already done a proof of concept with this and an ESP32 sat inside my truck, but without CAN authorization it won't be secure).

This circuit is specifically that. It's a “Disconnect from the cover as soon as the doors are locked" and “ONLY connect when the doors are unlocked”

But wait, there's more. Using the HomeLink buttons on my sun visor, I want to enable IN-VEHICLE control of the cover. That's what the 433 MHz circuit is for. Again, it will ONLY work WHEN the vehicle is unlocked and will ignore presses when the truck is locked.

For the future, I'll also implement the work done here: https://github.com/jantman/ford-f150-gen14-can-bus-interface/tree/main to have the rear tonneau cover light illuminate when the rear bed lights are activated.

Tell me I'm crazy. ;)

AND Yes, I know, PAAK is only as safe as the next update, or the next vulnerability. And I know that's an attack vector. But the beauty of this is that it will *also* work if I have to turn off PAAK, and use the old-school remote, without carrying around an extra remote.

AND yes, there are risks there too. I'm thinking of setting a Lock Out mode. I discovered the other day that if the ESP32 is connected, it AUTOMATICALLY rejects other pairings. Which could be a bonus for a ‘lock it down' mode.

#KiCad #Circuits #Electronics #DIY #Maker #HackTheWorld

Cholinergic #circuits in the ventral pallidum contribute to #pain processing. This study shows that subthalamic glutamatergic inputs drive cholinergic activity and links receptors on GABA neurons to hyperalgesia, offering insights on distinct pain mechanisms.

https://plos.io/4fO4sxU

#ITByte: #Quantum #Circuits are the way programs are expressed on a quantum computer.

In simplest terms, quantum circuits are a sequence of matrix operations performed on #Qubits, the quantum version of a bit.

https://knowledgezone.co.in/trends/browser?topic=Quantum-Circuit

@vv
Wired #robot #circuits #spaghetticode #buggycode #wormywires #bananasplit #frequent #occurence #wired #automatic #autonomicon

#chemistry #electronics #quantum #circuits

I’ve made another revision. This time, as many of you suggested, there's a single-side design that I think can work.

I'll make the copper side the bottom of the board, and silk screen the front. Since all the components pass through from front to back, soldering on the back makes more sense.

#KiCad #Circuits #DIY #Maker

OK, this is total overkill, but I made my traces much larger, for increased success ;)

Tell me it's workable?!

#KiCad #Circuits #DIY #Maker

I have never designed a PCB before, so, please tell me if this is okay.

It's pretty simple: a STAC64 header (male pins) breaking out to discrete pads (which I will attach a short pigtail to that in turn attaches to a STAC64 female plug.

There's a CAN H and CAN L breakout.

TLDR: I'm meant to be working on a new review that requires installation of something that attaches to the CAN bus using.. wait for it... WIRE TAP SNAPS.

1) those fail and 2) I have had some bad experiences where I ended up breaking an entire cable. I'm not about to do that on an expensive truck

I have a Digikey part order. I have the right diameter cables. I have a 3D printer, and I can make 2 sided PCBs on my CNC machine.

The P-N is a direct correlation to the pin numbers of the STAC 64 connector.

#KiCad #Circuits #DIY #Maker

MorphoHDL: A minimalistic language for growing circuits

https://paradigms-of-intelligence.github.io/morpho/

Comments: https://news.ycombinator.com/item?id=48901126

#HackerNews #MorphoHDL #minimalistic #language #circuits #technology #innovation #electronics

#puzzmo #circuits https://puzzmo.com/play/circuits/cokzw1q04/share took me a while today, was very uncertain about a particular clue but I did get it in one try 😤

🔍🧠 Ah, the groundbreaking revelation that the human brain requires #circuits to function—who knew?! 🙄 But first, a thrilling detour into the riveting world of... browser settings! 🌐💡 Just enable #JavaScript and #cookies, because apparently, that's all it takes to unlock the secrets of #consciousness. 🤖🍪
https://www.engineering.columbia.edu/about/news/circuit-lets-your-brain-think-and-see #brainfunction #browsersettings #HackerNews #ngated

The circuit that lets your brain think and see

https://www.engineering.columbia.edu/about/news/circuit-lets-your-brain-think-and-see

#HackerNews #braintechnology #neuroscience #innovation #circuits #brainmachineinterface

Yesterday, I was screaming at plumbing, after a pinhole in our well water feed developed.

IT took three trips for parts to really fix it, and a new trip is planned for fresh insulation.

Today, I taught myself to drag solder. I’ve never had to solder anything more complex than a small SOT transistor before.

#maker #diy #circuits #soldering

🔌🤖 Oh great, another #podcast about #circuits, because clearly what the world needs is more talk about #resistors and capacitors! 🎧 Meanwhile, Michał Zalewski, aka lcamtuf, is apparently so #electrifying that you'll need a surge protector just to handle his #insights. ⚡✨
https://theamphour.com/725-the-secret-life-of-circuits-with-lcamtuf-michal-zalewski/ #technology #capacitors #HackerNews #ngated

EMiX: Because apparently one #FPGA just wasn't enough! 🤪 Dive into this riveting tale of #hardware architects who dream in #circuits and count sheep in parallel. Who knew #emulation could be so... tantalizing? 🙃
https://arxiv.org/abs/2604.27012 #EMiX #tantalizing #story #HackerNews #ngated

# batteries

With all the technology we have, you still need to power down a device in order to have it's {lipo} batteries charged at relatively controllable temperatures.

That's the reason why removable batteries are a logical thing. That is also the reason why I do not understand from the perspective of fire safety, that volatile power units are permanently sealed in devices.

I have a few obsolete Android devices that are still perfectly usable, for lighter tasks. I refuse to pry them open in order to replace the volatile batteries which are charging at temperatures where the devices need to be shut down. A procedure I cannot do, because the power buttons and the logic integrated circuits behind them are broken. I need to use PPE in order to charge those things safely!

Luckily The European Union got fed up with this sealed battery phenomena and thanks to the Europeans we shall have normal battery separation again in our devices

#Hardware #integrated #circuits #battery #temperature #control #Celcius #Fahrenheit #lipo #lifo #NiMH #nicad #seperate #fire #hazard #PPE

Ah, the joys of a "Clay PCB Tutorial" that starts with a 🤯 network outage notice! Because nothing screams cutting-edge tech like the timeless art of finger-painting #circuits while praying for the WiFi gods to smile upon you. 🖥️🔌👶
https://feministhackerspaces.cargo.site/Clay-PCB-Tutorial #ClayPCB #tutorial #networkoutage #techhumor #fingerpainting #HackerNews #ngated

This guy from Chi-town's a pretty good writer.
#polarization #conflict #fear #violence #transformation #reality #simulation #becomes #normal #weakens #capacity #discernment #SocialBonds #SelfReferential #circuits #expose #real #truth #love #connection #society #empathy #compassion #alive in #fascist #USA

Hackster.io: Simulate Arduino, ESP32, and More with This Open Source Web Tool. “Is your circuit design the problem? Or is it your code? Or is it your rat’s nest of jumper wires on the breadboard? Diagnosing issues in any field is always about isolating variables and the Velxio open source online web tool will let you do that by creating working simulations with virtual development boards that […]

Intuitions for Tranformer Circuits

https://www.connorjdavis.com/p/intuitions-for-transformer-circuits

#HackerNews #Intuitions #for #Transformer #Circuits #AI #Research #MachineLearning #NeuralNetworks #TransformerCircuits

Have you ever had to look at someone elses awful work and get annoyed at having to fix the other persons "fix"? This repair guy knows the feeling.

https://www.youtube.com/shorts/nLPswRzmJU8

#Repair #Electronics #Technology #Circuits

One Open-source Project Daily

Digital logic design tool and simulator

https://github.com/logisim-evolution/logisim-evolution

#1ospd #opensource #circuit #circuits #digitalcircuit #digitalcircuits #digitallogic #digitallogicdesign #education #fpga #logic #logisim #logisimevolution #simulator #timingdiagram #verilog #vhdl

I can't believe I'm jut learning about a Driven Right Leg Circuit, aka active ground. It seems like this should have been part of #Circuits II. #Electronics
https://youtu.be/WpSSg3f72as?si=zEQRtYo9N97DaCng

Marseille - De la cité phocéenne aux calanques : Découverte de Sormiou https://sima78.chispa.fr/index.php?post/2026/01/19/Marseille-De-la-cit%C3%A9-phoc%C3%A9enne-aux-calanques-%3A-D%C3%A9couverte-de-Sormiou #Marseille #randonnee #Circuits #Calanque #Balades #Nature #rando

OMG this is killing me 🤣

The thread at https://x.com/beneater/status/2012988790709928305 is super hilarious

(alt link: https://xcancel.com/beneater/status/2012988790709928305 )

#ai #ml #vibe #vibecoding #hallucination #circuits

#STEM #STEAM #Engineering #Professor #AcademicSky #BlackAdemic #BlackSky #NoireSTEMinist #Coding #Robots #Electronics #Circuits #BlackInSTEM #WomenInSTEM #BlackWomenInSTEM #STEMSky #Robot #Circuits

https://youtu.be/lj2cO-OdWp4?si=SgcRY_chBJyTBMqL