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Private rare-earths exploration and process development company US Critical Materials Corp (USCM) of Salt Lake City, Utah, USA and Columbia University have signed a two-year sponsored research agreement seeking to advance scientific pathways that enable the development of future US production of gallium, scandium, titanium and rare-earth elements from red mud, a major byproduct of aluminium refining...

Інтелект: викладачі та науковці kpi чт, 04/16/2026 - 18:30

We used to have a wired door bell button as a garage door opener near the back door inside the house. The wiring got damaged in an area new wiring couldn’t be rerouted during renovation. Came up with this solution - took a garage door opener apart - connected wires to a decora style momentary switch and soldered other end to the pads for the buttons on pcb. Added a whip antenna to over come shielding of electrical box and drywall. To maintain the 9 inch whip antenna, drilled a small hole in electrical box and fed it into wall. Works perfectly. submitted by /u/Certain_Proposal7191 [link] [comments]

Deepak Shankar, founder of Mirabilis Design and developer of VisualSim Architect platform for chip and system designs, has created this cartoon for electronics design engineers.

The post The system architect’s sketchbook: The coherency wall appeared first on EDN.

With Keysight Assembly simulation software, automotive manufacturers can virtually test shop-floor processes to identify issues early in development. Late-stage assembly failures drive delays, rework, and recalls. By delivering early insight and integrating with existing ecosystems, the software improves body-in-white assembly workflows.

Developed with automotive OEM partners, Keysight Assembly enables engineers to replicate processes such as part positioning, clamping, and spot welding through guided workflows and templates—without requiring finite element modeling (FEM) expertise. It also provides early visibility into distortion and dimensional risks, shortening production timelines and improving build accuracy.

Keysight Assembly integrates with Keysight’s stamping simulation software, allowing engineers to carry stamped-part data across the process—from forming through assembly—and validate outcomes against pre-production scan data. It also integrates with CAD, product lifecycle management (PLM), Excel, and existing digital workflows without disrupting established practices.

Learn more about Keysight Assembly and related webinars here.

Keysight Technologies  

The post Simulation tool tests assembly processes upfront appeared first on EDN.

Littelfuse’s TDB series of miniature DIP switches uses a 1.27-mm half-pitch, surface-mount design to reduce PCB footprint. The compact devices support high-density layouts where space, reliability, and manufacturability matter.

The switches are available in 2-, 4-, 6-, 8-, and 10-position SPST configurations, with body lengths ranging from 3.67 mm to 13.83 mm depending on position count. Contact ratings of up to 50 VDC, 100 mA (steady state) and 24 VDC, 25 mA (switching) make them suitable for low-power industrial control, as well as consumer IoT and smart home devices. Contact resistance is 100 mΩ maximum, and insulation resistance is 100 MΩ minimum at 100 VDC.

Compatible with automated SMT assembly, the switches feature gold-plated bifurcated contacts and top tape sealing for post-reflow washable processing. They offer a mechanical and electrical life of 1000 cycles and operate over a temperature range of –40°C to +85°C.

The TDB series switches are available in tube or tape-and-reel packaging for high-volume production. Samples can be obtained through authorized Littelfuse distributors.

TDB series product page 

Littelfuse

The post SMT DIP switches fit space-constrained PCBs appeared first on EDN.

Візит делегації компанії Nihon Cyber Defence Co., Ltd. (NCD) kpi чт, 04/16/2026 - 18:00

The Vishay WLKN-000 two-way Wilkinson power divider/combiner operates from 15 GHz to 20 GHz, centered at 18 GHz. By integrating a resistor with the transmission lines, the compact surface-mount device simplifies system design and saves space in aerospace, defense, and 5G/6G connectivity applications.

Low insertion loss of <0.5 dB below 19 GHz—said to be one of the industry’s lowest­—and return loss of 10 dB to 15 dB enhance system efficiency by reducing power dissipation throughout the signal path. Unlike narrowband or resistive splitters, the WLKN-000 offers high output-to-output isolation of <20 dB at the center frequency. This limits crosstalk, protects downstream amplifiers during combining, and maintains stable performance across parallel RF paths.

The thin-film device operates over a temperature range of −55°C to +155°C, supporting reliable performance in challenging environments. Applications include automotive ADAS, radio transceivers, LEO satellites, base station terminals, drones, weapons guidance systems, and phased-array radar systems.

Samples of the WLKN-000 in 1817 SMD packages are available now; production quantities have a lead time of 20 weeks.

WLKN-000 product page 

Vishay Intertechnology 

The post Wilkinson divider/combiner reduces insertion loss appeared first on EDN.

Part of Diodes’ RobustISO family, the API782x series of dual-channel digital isolators delivers 5.7-kVRMS isolation for 1 minute per UL 1577. The devices offer reliable protection for digital control and communication signals in solar inverters, motor control, industrial automation, and data center equipment.

The API782x series meets reinforced and basic isolation requirements across multiple standards, including VDE, UL, and CQC. The devices are rated for an 8-kV peak isolation voltage per DIN VDE 0884-17 and a 12.8-kV peak surge isolation voltage for transient events. Based on Diodes’ reliability calculations for the capacitive isolation barrier, the components offer a predicted operational lifetime exceeding 40 years.

The isolators support data rates up to 100 Mbps and provide a minimum CMTI of 150 kV/µs. The API7820 features both channels in the same direction, while the API7821 provides both channels in the opposite direction with either a high or low default output state. They operate from a 2.5-V to 5.5-V supply voltage and typically consume 2.1 mA per channel at 1 Mbps.

API782x isolators in SO-16WW packages are available through Diodes’ authorized distributors.

API782x product page 

Diodes

The post Digital isolators strengthen industrial systems appeared first on EDN.

Microchip’s dsPIC33AK256MP306 digital signal controller (DSC) combines a 200-MHz, 32-bit core and double-precision FPU with high-resolution PWMs and high-speed ADCs. It also includes a hardware crypto accelerator with support for post-quantum cryptography (PQC). Offered in a 36-pin VQFN package, the DSC saves space and simplifies PCB layout in power conversion, motor control, and intelligent sensing applications.

The dsPIC33AK256MP306’s four PWM generator pairs (eight outputs) deliver fine edge placement (FEP) resolution down to 78 ps. Three 12-bit SAR ADCs operate at up to 40 Msamples/s, alongside 5-ns comparators and 12-bit DACs with slope compensation. These features enable fast, deterministic control loops for high-efficiency DC/DC converters, auxiliary rails, and high-frequency SiC/GaN systems. An integrated touch controller extends support to sensing and HMI functions.

To address growing cybersecurity requirements, the dsPIC33AK256MP306 family supports secure boot, firmware updates, and debug, with hardware-accelerated PQC aligned to emerging standards for connected control systems. Live update capability maintains uninterrupted firmware upgrades in high-availability systems.

Prices for the dsPIC33AK256MP306 start at $1.97 in lots of 5000 units.

dsPIC33AK256MP306 product page

Microchip Technology 

The post DSC integrates control, sensing, security appeared first on EDN.

Finland-based laser developer and manufacturer Vexlum (which was spun off from Tampere University of Technology’s Optoelectronics Research Centre in 2017) and precision photonics technology provider Menlo Systems GmbH of Martinsried near Munich, Germany, are collaborating to accelerate the development of ultra-precise optical atomic clock timekeeping by providing an accessible, modular photonics source...

Four cameras, from two companies. Similar at first glance. Quite different once you zoom in and ponder the picture a while. Which approach is superior? Share your opinions in the comments!

The way this is going, and to remain honest both with myself and all of you, I’m at least for now going to need to start referring to myself as a “camera collector” versus a photographer. I keep accumulating particularly noteworthy (therefore also rare) gear when I come across lightly used, but still reasonably priced, examples on eBay and elsewhere. But I can’t seem to find any spare time to actually use anything in my steadily expanding hardware inventory…at least not yet.

Will I ever be able to retire?

First World problem. I know. My latest examples of acquisition excess fall into the “pocketable” camera category. First off are two Pentax devices. As regular readers may recall from my past writeups, I’m nearing a half-century as a “Pentaxian”, a term originating on a t-shirt I snagged at the company’s CES booth a “few” years ago, prior to the brand’s acquisition by Ricoh. The new-to-me cameras are both members of the company’s “Q” product series: a first-generation Q:

and the successor Q7, skipping (at least so far) the in-between Q10 as well as the Q-S1 concluding iteration. I’d long known about the Q family, which originated a decade-and-a-half back, but enthusiastic reviews from folks such as Micro Four Nerds (the prior blog link is supplemented by the following video) tipped me over the acquisition edge:

Key differences between my two Pentax Q-series cameras include:

• Sensor size: 1/2.3″ on the Q, 1/1.7″ on the Q7, albeit both delivering 12 Mpixel resolution. By the way, the origin of this particular sensor dimension terminology is a story in and of itself, which I’ll save for another day; for now, see here.
• Body construction: Magnesium alloy on the Q, (still-rugged) plastic on the Q7

Note too, for comparison-to-come purposes, that neither model embeds an electronic viewfinder (EVF), although they both include both a pop-up flash and a hot shoe tailored for an optional external flash unit (which can operate in tandem with the pop-up) or a transmitter.

Potato, potahto (or tomato?)

Then I came across Chris Niccolls’ extensive writeup, “The Panasonic Lumix GM-5 Is the Greatest Digital Camera Ever Made”, along with an associated video, at PetaPixel:

Insert hook and reel me in. Regular readers may also recall I’ve been slowly-but-steadily collecting Micro Four Thirds (M43) gear in recent years, now spanning a “few” cameras from two suppliers (Olympus-now-OM System and Panasonic; the Blackmagic Design video cameras I own are both higher-end Canon EF mount-based models), one of which ended up as a gift for my wife. Well, my stable is now even fuller; I bought both a Panasonic Lumix DMC-GM1:

and the successor DMC-GM5:

both of which are also more than a decade old at this point. Here’s another Micro Four Nerds review writeup-plus-video combo, this time focused (bad pun intended) on the GM1:

along with a coverage content tandem on the GM5 (to be clear, I have no affiliation with Micro Four Nerds or any other “influencer” showcased here; I’m just a fan):

Notable differences between the two models include the following:

• Supplemental illumination: pop-up built-in flash on the GM1 (but no hot shoe), hot shoe (but no integrated flash) on the GM5, and
• Viewfinder: backside LCD only on the GM1, added EVF (electronic viewfinder, space-supplanting the predecessor’s pop-up flash) on the GM5

Sensor inconsistencies

Although the four cameras, from two manufacturers’ model lines, are conceptually similar (“pocketable”), their respective implementations are quite different. The inherent tradeoffs leading to each development team’s decisions and resultant product capabilities and limitations are interesting (IMHO at least) to ponder. Note that I have no company-representative insight, either quotable or off-the-record; what follows are just my educated guesses.

As already mentioned, my two Pentax Q variants’ image sensors are both 12 Mpixel in resolution, albeit with differing dimensions; the ~60% larger-area of the Q7’s sensor translates into improved low-light performance and wider dynamic range thanks to expanded pixel pitch and other factors. Conversely, the Panasonic GM1 and GM5’s image sensors are, as far as I can tell, identical, with 16 Mpixel resolutions. That said, M43 image sensors have roughly 9x the surface area of the 1/2.3″ sensor in the Pentax Q, and are still approximately 4x larger (again, surface area, not necessarily active image capture area) of the 1/1.7″ sensor in the Pentax Q7.

Stabilization tradeoffs

All four (total, including my two) Pentax Q family members also supported in-body image stabilization (IBIS), in and of itself a curious choice given the lightweight bodies and accompanying lenses, all of which would seemingly diminish the need for mechanical stabilization of any sort. To wit, neither Panasonic camera mentioned here implements IBIS, nor did any Panasonic-branded M43 lenses support optical image stabilization (OIS), at least at the time that the GM1 and GM5 were in production.

That said, M43 partner then-Olympus did have OIS-inclusive optics in its “glass” portfolio at the time, which could as-needed be used on Panasonic bodies given the two manufacturers’ lens mount compatibility. OIS is, generally speaking, inferior to IBIS, although as I’ve previously noted, it’s particularly effective with telephoto lenses. But it’s arguably better than nothing at all, or to interpolation-based digital image stabilization, for that matter.

Here are a couple of example videos discussing the similarities and differences between IBIS and OIS along with concept examples of both IS forms in action, as well as how they can collaborate:

This one from Canon has a Japanese audio track albeit with English subtitles:

Keep in mind, too, that given the Panasonic cameras’ larger-sized image sensors versus the Pentax alternatives, therefore larger pitch pixels despite the 33.3% higher resolutions, image stabilization was inherently less necessary in the M43 case given that improved light-gathering capability translated into the ability to operate them at blur-suppressing higher shutter speeds.

Space constraints

The added stabilization hardware surrounding the image sensor in the Pentax Q-family bodies, coupled with the desire to maintain their compact weight and dimensions, also compelled the company to dispense with a mechanical shutter, at least in the bodies themselves. Instead, a subset of the then-available eight-lens suite embedded mechanical leaf shutters in the lenses. More broadly, an “electronic shutter” implemented in the image sensor was available in all body-plus-lens cases, albeit with “rolling shutter” and other tradeoffs.

A hollow victory?

Ironically, in spite of these likely-difficult tradeoff decisions made by its development team, Pentax still ended up with Q-series camera bodies that were (slightly) larger than that of the Panasonic DC-GM1, as Robin Wong, another well-known photo enthusiast “personality”, notes in his Pentax- and Panasonic-themed blog posts and videos:

I’ve got more to say about the two companies’ contrasting approaches to the “pocketable” camera market, including the tradeoffs between multi-supplier standard and sole-sourced proprietary lens mounts …but I’ll save that for another day and writeup (or few). For now, I’ll wrap up my writeup and hand the keyboard to you for your so-far thoughts in the comments!

—Brian Dipert is the associate editor, as well as a contributing editor, at EDN Magazine.

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• Scrutinizing a camera flash transmitter
• Multi-source vs proprietary: photography case studies
• SD card speeds: question your assumptions
• Tamron’s TAP-in Console: A nexus for camera lens update and control

The post Engineering tradeoffs: a camera case study appeared first on EDN.

Hyderabad, India: April 16, 2026: Sasken Technologies Ltd. (BSE: 532663, NSE: SASKEN), a leading provider of product engineering and digital transformation services, today announced the launch of its Center of Excellence (CoE) in Hyderabad. The new center strengthens Sasken’s regional delivery footprint and deepens collaboration with strategic Chipset customers like Qualcomm and their OEMs.

Located in one of India’s fastest-growing technology ecosystems, the Hyderabad CoE will focus on next-generation engineering across connected devices, 5G-led platforms, IoT solutions, embedded systems, and digital product engineering. The center is designed to enable closer customer collaboration, accelerate engineering cycles, and support faster product innovation for complex global programs across industries such as Automotive, Smart devices, HiTech, Satellite communication, Industrial etc.

As part of this expansion, Sasken also announced the appointment of Nirmala Datla, Chief Data Science & Engineering Officer, as Site Leader for the Hyderabad CoE. She will drive delivery excellence, build next-generation engineering capabilities, and lead talent development from the location.

Alongside the leadership appointment, Sasken plans to hire initially 100+ specialized professionals from Hyderabad’s strong technology talent ecosystem in the coming months. Hiring will focus on high-skill roles across semiconductors, ODM, automotive, and Data Science & Engineering, supporting advanced engineering programs in connected devices, intelligent platforms, and next-generation digital ecosystems for global customers.

“The Hyderabad CoE represents a strategic investment to support the growing demand for Sasken’s capabilities in product engineering and digital transformation. Hyderabad’s strong engineering talent ecosystem enables us to scale delivery, deepen customer collaboration, and accelerate innovation and time-to-market for our customers,” said Nirmala Datla, Chief Data Science and Engineering Officer, Sasken Technologies.

“Hyderabad presents us with an excellent talent pool across our BU’s. The launch of this Center of Excellence strengthens Sasken’s delivery footprint and positions us to support customers with greater speed, scale, and proximity,”. “Aligned with our growth strategy, we continue to make focused investments in talent and capabilities that enable us to scale the right segments and deliver sustained growth.” said Hareesh Ramanna, Chief Experience Officer, Sasken Technologies.

The post Sasken Announces Hyderabad Center of Excellence to Scale Product Engineering and Digital Innovation appeared first on ELE Times.

• Visitor turnout: 20,922 participants, including key buyers and sourcing decision-makers, turn up for the Greater Noida edition.
• Business engagement: The event facilitated 1,500+ buyer-seller meetings, focused on localisation, supplier discovery, and supply chain partnerships
• International presence: Strong participation from countries like Germany, China, Japan, Taiwan, and the United States

Greater Noida: India’s ambition to position itself as a global electronics manufacturing hub is beginning to reflect in more concrete ways; on factory floors, in policy corridors, and increasingly, on industry platforms where supply chains are being actively reshaped.

The 2026 Greater Noida edition of electronica India and productronica India brought this shift into focus, with a strong turnout of global suppliers, domestic manufacturers, and sourcing leaders. For an industry navigating geopolitical realignments and cost pressures, the event served less as a showcase and more as a working marketplace. The event was attended by 20,922 participants and brought more than 1000+ suppliers and distributors from across the globe and India to the show floor.

The Government of Uttar Pradesh, as the Host State, played a key role in supporting electronica India and Productronica India 2026 in Greater Noida. Its partnership reflected the state’s continued focus on building a strong electronics manufacturing ecosystem, backed by policy support, infrastructure development, and investment facilitation. The presence and involvement of senior government representatives underscored Uttar Pradesh’s intent to position itself as a preferred destination for electronics manufacturing, while also enabling closer engagement between industry stakeholders and policymakers on the ground.

Therefore, the inauguration was led by a cross-section of political and industry leaders, including Shri Suresh Kumar Khanna, Uttar Pradesh’s Minister for Finance and Parliamentary Affairs, and Shri Jitin Prasada, Union Minister of State for Electronics and IT, and for Commerce and Industry. They were joined by Shri Nand Gopal Gupta ‘Nandi’, Minister for Industrial Development; Shri Sunil Kumar Sharma, Minister for IT & Electronics; Shri Ajit Singh Pal, Minister of State for Science and Technology, Electronics and IT; and Shri Alok Kumar, Principal Secretary, IT & Electronics, Uttar Pradesh.

Scale with direction

Across its dual editions in Greater Noida and Bengaluru, the platform now brings together over 60,000 participants annually, reflecting a 50% expansion in scale and reinforcing its position as a key industry meeting point.

The Greater Noida edition saw significant participation from key manufacturing economies, including Germany, China, Japan, Taiwan, and the United States—an indicator of India’s increasing integration into global value chains.

More notably, 1500+ structured and on-ground B2B meetings were conducted during the event, many centred on supplier diversification, localisation strategies, and lead-time optimisation. These are areas that have moved to the top of boardroom agendas as companies reassess dependence on concentrated supply bases.

The current edition reflected a clear emphasis on capability building. Exhibitors pointed to growing interest in component manufacturing, automation, and supply chain resilience. Buyers, particularly from sectors such as automotive and consumer electronics, were seen evaluating domestic suppliers with an eye on long-term partnerships rather than short-term procurement.

Alongside the exhibition, a series of conferences provided a forum for more detailed engagement, aligning with the sector’s current priorities, addressing policy, supply chain resilience, automotive electronics, PCB manufacturing, and advanced production technologies. These themes were explored through platforms such as the UP Electronics Leadership Summit, the ELCINA Supply Chain Summit, the Automotive Display Conference by ICEA, the Bharat PCB Tech Conference, and the SMT Thought Leadership Summit.

The edition also emphasised innovation, featuring a Startup Pavilion supported by the Government of Uttar Pradesh and curated industry podcasts. A notable development was the launch of BPCA, Bharat’s dedicated platform for printed circuits and assemblies, introduced in collaboration with ELCINA and Messe Muenchen India.

Industry bodies such as ELCINA and ICEA were active participants, contributing to both conference discussions and closed-door industry interactions.

Rajoo Goel, Secretary General, ELCINA, stated,“The conversations at electronica India and productronica India 2026 reflected a clear shift in industry priorities. Localisation has moved beyond policy intent and is increasingly becoming a business imperative. The platform brought the value chain together in a way that enabled more practical discussions around strengthening component manufacturing capabilities and reducing external dependencies.”

Pankaj Mohindroo, Chairman, ICEA, added, “What stood out clearly was the growing maturity of India’s electronics ecosystem. We are now seeing a far stronger convergence between policy direction, industry investments, and supply chain strategies, an alignment that is critical for sustainable scale.

electronica and productronica India 2026 played an important role in advancing this momentum by enabling meaningful, direct engagement between global technology and component suppliers and Indian manufacturers who are expanding with long-term commitment and strategic intent.”

Voices from the floor

Participants indicated that the value of the platform lay in the quality of engagement rather than scale alone.

Tsuyuki Junichi – Division Head – Robotics Support Business Division, Yamaha Motor India Sales (P) Ltd said, “For Yamaha Motor India Sales (P) Ltd., electronica India and productronica India, opened more meaningful conversations with teams that are actively planning their next phase of manufacturing growth.”

Mr. Narendra Savant – VP Operations, Kyoritsu Electric India Pvt Ltd stated, “What stood out for us at electronica India and productronica India 2026 in Greater Noida was the clarity of intent from buyers. They came with defined sourcing requirements, timelines, and technical expectations. We saw strong interest across diverse industrial manufacturers for our Customised Robotic + Automation Integrated solutions and our Made-in-India End-of-Line Testers, which aligns with where the Indian electronics manufacturing production needs are heading. For us, the value of this platform lies in the ability to engage with decision-makers who are actively evaluating long-term supply partnerships rather than short-term procurement.”

Raj Kumar Saini – Managing Director, Saini Communications Pvt Ltd, mentioned,“The quality of interaction has definitely gone up. We’re no longer talking about basic automation; most conversations are now around integration, efficiency, and how to scale operations. We’ve had interest coming in from multiple sectors, which is a good sign. You can see that manufacturers are thinking more long-term now, and that changes the kind of discussions you have.”

Visitors highlighted the ability to evaluate global and domestic suppliers within a single platform, enabling faster decision-making.

Robins N T – Head Strategic Sourcing & New Product Development, Simple Energy said, “We are actively looking at diversifying supply chains and increasing localisation, and the interactions here help accelerate that process. The level of preparedness among exhibitors has improved significantly, which makes it easier to move from evaluation to actual business discussions within a short span”.

Srinivasan Sampath – Head NPD Materials at Pricol Limited, said, “What worked well for us at electronica India and productronica India 2026 in Greater Noida was the ability to benchmark multiple suppliers side by side. It helped us compare capabilities, timelines, and approach in a very practical way. In a short span, we were able to narrow down options that would have otherwise taken months to evaluate.”

Anuj Kumar Srivastava – Global Head- Facilities, Secure Meters Ltd. mentioned, “We came in to understand how quickly suppliers in India are adapting to new requirements, especially around quality standards and turnaround times. The interactions here gave us a clearer picture of who is ready to scale and who we can work with as we expand and diversify our operations. Pleased to see focus on Make in India.”

The event also witnessed strategic announcements and MoUs, including expanded collaborations between international PCB and component associations and Indian industry bodies, aimed at strengthening supply chain capabilities and fostering technology exchange.

Dr Reinhard Pfeiffer, CEO, Messe München, said, “What is becoming evident is how quickly India is moving from being part of the conversation about the supply chain to influencing it. Companies no longer assess the country solely based on cost or scale; they are also looking at long-term manufacturing alignment. This shift is reflected in the discussions taking place at electronica India and productronica India 2026 in Greater Noida.”

Bhupinder Singh, President – IMEA, Messe München & CEO, Messe Muenchen India said, “electronica India and productronica India are increasingly reflecting what the industry is dealing with in real time, supply chain adjustments, localisation, and the need for reliable partners. The conversations here are more structured, more practical, and closely linked to actual business decisions, which is where their relevance comes from.”

Looking ahead

The second edition of electronica India and productronica India 2026 is scheduled to be held in Bengaluru from September 16 to 18, 2026, extending the platform’s reach into another major electronics manufacturing hub.

As the industry recalibrates in response to geopolitical and economic shifts, platforms such as these are likely to play a more central role. The question, increasingly, is not whether India will be part of the global electronics supply chain—but how large a role it intends to occupy.

The post India sharpens its electronics manufacturing edge at electronica India and productronica India 2026 in Greater Noida appeared first on ELE Times.

Deposition equipment maker Aixtron SE of Herzogenrath, near Aachen, Germany has reported preliminary revenue of about €59m in first-quarter 2026, down 48% on €112.5m in Q1/2025, but within the guided range of €65m±€10m...

I used to use PCBWAY years back for a long time, doing over 100 high value jobs with them and they were good. I never had any real complaints. I moved over to JLCPCB due to the majorly lower cost a few years ago and to be honest I also couldn't complain with their service for a good amount of time. I have been using them for prototyping for about 3 years with the occasional small batch run up to 200 pieces of fairly basic stuff like ESP32 etc. Recently I have started a small business that uses a reasonbly complex setup of USB at 5Gb/s and MIPI CSI at 2Gb/s with the corresponding high value parts of the image sensor and CYUSB CX3 transceiver. I have now made 4 batches. Batch 1 of 5 pieces: - Issues with the TMC2209, no communication and occasional explosions for no apparent reason. They would just lock up and sink full current through windings thus killing themselves. Batch 2 of 5 pieces: - No issues Batch 3 of 25 pieces: - The CYUSB chip would just NOT boot, it would sit in a reset state and nothing I could do would change that. Small changes had been applied to the PCBs over the batches but the schematic and layout remainded IDENTICAL for the CYUSB part of the design. This delayed by project by 3 months. Infineon were very helpful and spent a really good amount of time helping to debug the design comparing the new design from schematic to gerbers to xrays, they deemed the design was identical from their perspective and put it down to a PCB fabrication fault. This affected all 25 PCBs. Batch 4 of 5 pieces: - I decided to make another batch of boards while supplying my own CYUSB chips - they work no problem now. - TMC2209 is blowing up again, replacing with parts from Digikey solve the problem 100%. - I have an STM32 for house keeping on the board. Never touched this part of the design from the first batch, it now runs but I cannot maintain SWD debug without disconnect and now unable to program it via the bootloader... Every time I order a batch I get a different outcome. No question JLCPCB uses fake parts intentionally or unintentionally. The outcome is the same. For me I'm going to be moving to a alternative Chinese supplier with free issued parts. submitted by /u/gswdh [link] [comments]

Quinas Technology Ltd of London, UK (which was spun off from Lancaster University in early 2023) has completed a project funded by Innovate UK (which provides funding and support for business innovation as part of UK Research and Innovation) that explored the application of its proprietary ULTRARAM technology to neuromorphic computing...

💛💙 Запрошуємо ветеранів на ознайомчий курс «Передові технології прикладної механіки та біомедичної інженерії». kpi чт, 04/16/2026 - 10:37

There's not a lot of love for the JT these days. Nevertheless they crossed my mind the other day and I couldn't help but put one together. I was as always amused by their ability to drive an led from incredibly low voltage. I had it down to 0.39V at one point. The age old issues cropped up immediately when I wanted to make an led last on a button cell for a long time. They're great at pulling out some juice at low voltages, but not so good when the cell is brand new. Which is a shame. If one of these could take advantage of all the power in a button cell, they'd last much much longer obv. There's all kinds of regulated varieties on the internet. Most of them rely on negative feedback at the cost of high base (or drive) current. In many cases, the amount of power being consumed by the base circuit was using more power than the led itself. This is primarily due to using a low value resistor into the base of a bjt. To regulate the power (often voltage), a second transistor diverts some of the current to ground. As power consumption grows, more base current is diverted until these balance out over the range of input voltages. If the drive current and positive feedback could be controlled without wasting most of it, a ton of power could be saved. So I came up with this; a jfet between L2 and the base resistor. Instead of diverting current in the bias circuit to ground, it is directly regulated with a variable "resistance." Of course to control the jfet would require a floating negative voltage that was proportional to the power being consumed by the boost circuit. So I added an additional winding, L3, to provide an isolated supply that would rise and fall with the rest of the joule thief. Then it was a simple matter of using a low power (low Vf diodes and small ceramic caps) rectifier with a pot to dial in the control voltage. Jfets have an incredibly high impedance, and I used a 2 megaohm pot so the control circuit utilizes very little power. Anyway I've been rambling. I thought the idea was neat and now I have a working version to see how long it lasts. If anyone is interested, I can post a schematic. This is nothing special, but a fun detour from the actual projects I've been working on. submitted by /u/Regular_Fortune8038 [link] [comments]

My spine hurts all over. 201 leds are smaller than a grain of salt! Even harder to solder on a home made pcb! Plus all the time troubleshooting broken tracks and drilling holes by hand. Those blobs kf solder you see are vias that link the rear and front copper tracks together. Did I mention my spine hurts? submitted by /u/BlownUpCapacitor [link] [comments]