DNA scaffolds enable self-assembling 3D electronic devices
(techxplore.com)
Researchers at Columbia Engineering have for the first time used DNA to help create 3D electronically operational devices with nanometer-size features.
Researchers at Columbia Engineering have for the first time used DNA to help create 3D electronically operational devices with nanometer-size features.
Show HN: Physical Pomodoro Timer with ESP32 and e-paper screen
(github.com/Rukenshia)
This is the repository for an ESP32 based pomodoro timer. It uses an ePaper display and a rotary dial for input. The code in this repository will not be ready-to-use, as some assets and fonts have been removed. However, if you really want to you should be able to adapt the code to your needs.
This is the repository for an ESP32 based pomodoro timer. It uses an ePaper display and a rotary dial for input. The code in this repository will not be ready-to-use, as some assets and fonts have been removed. However, if you really want to you should be able to adapt the code to your needs.
Things I would have told myself before building an autorouter
(autorouting.com)
I’ve spent about a year working on an autorouter for tscircuit (an open-source electronics CAD kernel written in Typescript). If I could go back a year, these are the 13 things I would tell myself:
I’ve spent about a year working on an autorouter for tscircuit (an open-source electronics CAD kernel written in Typescript). If I could go back a year, these are the 13 things I would tell myself:
Introduction to Open Source Laptop Project (2023)
(altium.com)
Ever dreamt of designing your own open-source laptop? For a while now I´ve been fascinated by this idea. As you can probably imagine, this is a monumental task that will require a lot of time and resources. Working alone on a project of this size makes matters even more difficult. So, why embark on such an adventure–especially with a product design that has already been manufactured and sold by the millions for years on end?
Ever dreamt of designing your own open-source laptop? For a while now I´ve been fascinated by this idea. As you can probably imagine, this is a monumental task that will require a lot of time and resources. Working alone on a project of this size makes matters even more difficult. So, why embark on such an adventure–especially with a product design that has already been manufactured and sold by the millions for years on end?
Pi Pico Rx – A crystal radio for the digital age?
(readthedocs.io)
The Pi Pico Rx - may be the answer to that question. While it may not be quite as straightforward as the crystal radio, the Pi Pico Rx presents a remarkably simple solution. Armed with just a Raspberry Pi Pico, an analogue switch, and an op-amp, we now have the power to construct a capable SDR receiver covering the LW, MW, and SW bands. With the ability to receive signals from halfway around the globe.
The Pi Pico Rx - may be the answer to that question. While it may not be quite as straightforward as the crystal radio, the Pi Pico Rx presents a remarkably simple solution. Armed with just a Raspberry Pi Pico, an analogue switch, and an op-amp, we now have the power to construct a capable SDR receiver covering the LW, MW, and SW bands. With the ability to receive signals from halfway around the globe.
Mini UPS with replaceable batteries and DC, PoE output
(cnx-software.com)
Most uninterruptible power supplies (UPS) require AC voltage and use specific batteries that must be changed every few years. But those may be oversized and not the most efficient if you just want to keep single board computers (SBCs), low-power mini PCs, routers, or security cameras up and running during power failures.
Most uninterruptible power supplies (UPS) require AC voltage and use specific batteries that must be changed every few years. But those may be oversized and not the most efficient if you just want to keep single board computers (SBCs), low-power mini PCs, routers, or security cameras up and running during power failures.
Teardown, Optimization: Comsol 8Gb USB Flash Stick (2015)
(goughlui.com)
A while back, I received a Comsol 8Gb USB Flash Stick for a test. As it turns out, I’ve managed to grab another, so I felt less bad about breaking one apart to work out what’s inside – and as it turns out, it provided me a world of entertainment for the weekend. It was more than I expected, and the optimization process is something engineers (like myself) really get excited about.
A while back, I received a Comsol 8Gb USB Flash Stick for a test. As it turns out, I’ve managed to grab another, so I felt less bad about breaking one apart to work out what’s inside – and as it turns out, it provided me a world of entertainment for the weekend. It was more than I expected, and the optimization process is something engineers (like myself) really get excited about.
Designing Electronics That Work
(hscott.net)
Over the last 5 years, I’ve been putting together a 300+ page book with basically everything I learned the hard way over the last 10 years founding and working at several hardware startups.
Over the last 5 years, I’ve been putting together a 300+ page book with basically everything I learned the hard way over the last 10 years founding and working at several hardware startups.
Raspberry Pi RP2350 Now Available for Purchase, Stacked Memory Variant Coming
(phoronix.com)
Raspberry Pi last year announced the RP2350 second-generation micro-controller that debuted within their $5 Raspberry Pi Pico 2 single board computer. Today they announced the RP2350 micro-controller is now available to purchase for your own micro-controller needs.
Raspberry Pi last year announced the RP2350 second-generation micro-controller that debuted within their $5 Raspberry Pi Pico 2 single board computer. Today they announced the RP2350 micro-controller is now available to purchase for your own micro-controller needs.
Implementing "Tennis for Two" using op amps (2024)
(qiqitori.com)
“Tennis for Two” is the name given to an early video game implemented on an analog computer. See https://en.wikipedia.org/wiki/Tennis_for_Two and https://en.wikipedia.org/wiki/Early_history_of_video_games for more information on the game itself. This post documents the construction of a “Tennis for Two”-like game using op amps.
“Tennis for Two” is the name given to an early video game implemented on an analog computer. See https://en.wikipedia.org/wiki/Tennis_for_Two and https://en.wikipedia.org/wiki/Early_history_of_video_games for more information on the game itself. This post documents the construction of a “Tennis for Two”-like game using op amps.
Ask HN: I lack imagination for electronics projects
(ycombinator.com)
I love to learn about programming, protocols, these or that technical specification, how to make things work, etc.<p>However, I not only lack imagination of what I could use this for in the real world, I also don't get a kick out of seeing the final thing.
I love to learn about programming, protocols, these or that technical specification, how to make things work, etc.<p>However, I not only lack imagination of what I could use this for in the real world, I also don't get a kick out of seeing the final thing.
Software-Defined Radio (SDR) Course
(github.com/python-can-define-radio)
This is an in-progress collection of tutorials about the foundations of Software Defined Radios. Readers are encouraged to supplement with other resources.
This is an in-progress collection of tutorials about the foundations of Software Defined Radios. Readers are encouraged to supplement with other resources.
Walkman: Catalog of All Models
(walkman.land)
Showing 1 - 20 / 691 Order▲▼Page 1234567891011121314151617181920212223242526272829303132333435Sort IdDateFillModelPopularPrice_nowWeightCm3Filter AllAiwaAKAICasioFairMateGeneralElectricGoldstarGrundigHitachiJVCKenwoodPanasonicPhilipsPioneerSamsungSanyoSharpSiemensSonyToshibaUnitraVegaVictorYamaha
Showing 1 - 20 / 691 Order▲▼Page 1234567891011121314151617181920212223242526272829303132333435Sort IdDateFillModelPopularPrice_nowWeightCm3Filter AllAiwaAKAICasioFairMateGeneralElectricGoldstarGrundigHitachiJVCKenwoodPanasonicPhilipsPioneerSamsungSanyoSharpSiemensSonyToshibaUnitraVegaVictorYamaha
New battery-free technology can power devices using ambient RF signals
(nus.edu.sg)
Ubiquitous wireless technologies like Wi-Fi, Bluetooth, and 5G rely on radio frequency (RF) signals to send and receive data. A new prototype of an energy harvesting module – developed by a team led by scientists from the National University of Singapore (NUS) – can now convert ambient or ‘waste’ RF signals into direct current (DC) voltage. This can be used to power small electronic devices without the use of batteries.
Ubiquitous wireless technologies like Wi-Fi, Bluetooth, and 5G rely on radio frequency (RF) signals to send and receive data. A new prototype of an energy harvesting module – developed by a team led by scientists from the National University of Singapore (NUS) – can now convert ambient or ‘waste’ RF signals into direct current (DC) voltage. This can be used to power small electronic devices without the use of batteries.
Tiny Ten DSP-Based HF Transceiver
(janbob.com)
This all started while on a backpack in Oregon's Cascade Mountains. We enjoyed the beautiful scenery of our alpine valley. The lake in front of the tent was crystal clear and reflected the surrounding mountains. But, radio signals were all shielded from us. Not only were there no Cell signals, but we could only receive one weak FM broadcast station.
This all started while on a backpack in Oregon's Cascade Mountains. We enjoyed the beautiful scenery of our alpine valley. The lake in front of the tent was crystal clear and reflected the surrounding mountains. But, radio signals were all shielded from us. Not only were there no Cell signals, but we could only receive one weak FM broadcast station.
Show HN: Berlin Swapfest – Electronics flea market
(swapfest.berlin)
In association with Berlin's long-time hacker space c-base we're hosting the first of a quarterly Swapfest at their space in Kreuzberg.
In association with Berlin's long-time hacker space c-base we're hosting the first of a quarterly Swapfest at their space in Kreuzberg.
KiCad 9.0 Released for Advancing Open-Source EDA
(phoronix.com)
KiCad 9.0 is now available as the newest version of this leading open-source Electronics Design Automation (EDA) suite that can rival some proprietary solutions for designing PCBs and other electronic hardware.
KiCad 9.0 is now available as the newest version of this leading open-source Electronics Design Automation (EDA) suite that can rival some proprietary solutions for designing PCBs and other electronic hardware.
But good sir, what is electricity?
(lcamtuf.substack.com)
A recurring theme of this Substack are my attempts to build out an accessible curriculum for hobby electronics. The target audience are folks who are no longer content with dumbed-down analogies, but who aren’t keen on academic textbooks brimming with obtuse jargon and advanced calculus. I’m particularly fond of the following foundational articles:
A recurring theme of this Substack are my attempts to build out an accessible curriculum for hobby electronics. The target audience are folks who are no longer content with dumbed-down analogies, but who aren’t keen on academic textbooks brimming with obtuse jargon and advanced calculus. I’m particularly fond of the following foundational articles:
KiCad 9 Released
(kicad.org)
The KiCad project is proud to announce the release of the next major version of KiCad. Version 9 is packed with new features, improvements, and hundreds of bug fixes. We hope you enjoy the new version! Head to the KiCad download page to get your copy of the new version (note that some packages may still be in the process of being released at the time this announcement is published).
The KiCad project is proud to announce the release of the next major version of KiCad. Version 9 is packed with new features, improvements, and hundreds of bug fixes. We hope you enjoy the new version! Head to the KiCad download page to get your copy of the new version (note that some packages may still be in the process of being released at the time this announcement is published).
KiCad 9.0 Released
(kicad.org)
The KiCad project is proud to announce the release of the next major version of KiCad. Version 9 is packed with new features, improvements, and hundreds of bug fixes. We hope you enjoy the new version! Head to the KiCad download page to get your copy of the new version (note that some packages may still be in the process of being released at the time this announcement is published).
The KiCad project is proud to announce the release of the next major version of KiCad. Version 9 is packed with new features, improvements, and hundreds of bug fixes. We hope you enjoy the new version! Head to the KiCad download page to get your copy of the new version (note that some packages may still be in the process of being released at the time this announcement is published).