Repurposing Large Electronic Price Tags

If you’ve recently braved the pandemic long enough to make a trip to a big box retailer, you may have spotted a few massive e-paper price tags affixed to large items like appliances. These seven inch displays were likely designed to be used in e-readers such as the Kindle, but …read more

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A CPU-Less Computer with a Single NOR-Gate ALU

We see a lot of discrete-logic computer builds these days, and we love them all. But after a while, they kind of all blend in with each other. So what’s the discrete logic aficionado to do if they want to stand out from the pack? Perhaps this CPU-less computer with …read more

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Coaxial Connectors, Starting With The PL259

For the casual breadboard experimenter with a microcontroller and a few peripherals, there’s little concern over interconnects as a set of jumper wires will suffice. But as any radio amateur will tell you though, at higher frequencies it’s a very different affair. [Ria Jairam N2RJ] has embarked upon a series …read more

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Using LL-HLS with byte-range addressing to achieve interoperability in low latency streaming

HTTP Adaptive Segmented (HAS) streaming began to be used at scale from 2008 to 2012, with the advent of Move Networks, Microsoft Smooth Streaming, Apple HLS, Adobe HDS, and MPEG DASH. With the typical 10s segment durations of the day, livestream latencies (measuring latency as the time from an action being filmed to that same action being displayed on a device’s screen) remained in the 30s to 60s range, trailing broadcast by a significant degree. Over the next decade, segment durations were reduced down to 2s, bringing with them a concomitant reduction in latency to the 8s to 16s range. That range remains the typical latency for many live events today. The year 2020 then brought the industry a pleasant surprise — not one, but two HAS standards were released that target latency in the 2s range: Low Latency DASH (LL-DASH) and Low Latency HLS (LL-HLS). Both these standards were developed independently, and while they can be deployed as separate streams in a content delivery system, there are performance and cost gains to be had for packagers, origins, CDNs, and players if both streaming formats can be served by a single-set of media objects. Continue reading Using LL-HLS with byte-range addressing to achieve interoperability in low latency streaming

Espressif Leaks ESP32-C3: A WiFi SoC That’s RISC-V and is ESP8266 Pin-Compatible

Six years on from the emergence of the Espressif ESP8266 we might believe that the focus had shifted to the newer dual-core ESP32. But here comes a twist in the form of the newly-revealed ESP32-C3. It’s a WiFi SoC that despite its ESP32 name contains a RISC-V core in place …read more

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Intel’s Forgotten 1970s Dual Core Processor

Can you remember when you received your first computer or device containing a CPU with more than one main processing core on the die? We’re guessing for many of you it was probably some time around 2005, and it’s likely that processor would have been in the Intel Core Duo …read more

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High-Speed Spectrometer Built with Cheap Linear CCD

If you’ve ever dreamed of building a proper spectrometer, it looks like the ESPROS epc901 CCD sensor is absolutely worth your attention. It’s fast, sensitive, easy to interface with, and at just $24 USD, it won’t break the bank. There’s only one problem: implementing it in your project means either …read more

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High-Speed Spectrometer Built with Cheap Linear CCD

If you’ve ever dreamed of building a proper spectrometer, it looks like the ESPROS epc901 CCD sensor is absolutely worth your attention. It’s fast, sensitive, easy to interface with, and at just $24 USD, it won’t break the bank. There’s only one problem: implementing it in your project means either …read more

Continue reading High-Speed Spectrometer Built with Cheap Linear CCD

New Part Day: Bouffalo Labs BL602 RISC-V Wi-Fi/Bluetooth SoC

We should all by now be used to microcontrollers with wireless hardware on board, with Espressif or Nordic Labs dominating the hacker scene. There have been several other contenders in this arena over the years that haven’t really caught the attention of our community, usually because of the opacity of …read more

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E-Paper Weather Display is a Great Base to Build From

As e-paper modules have become more affordable, we’ve started to see them pop up more and more in hacker projects. It used to be that you had to force a second-hand Kindle to do your bidding, but now you can buy just the screen itself complete with a header to …read more

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