КП-74. Валидатор советской эпохи

Приветствую всех!

Уверен, даже если вы и не застали транспорт той эпохи, вы всё равно узнаете эти устройства — билетные компостеры. Если кассы ушли в историю значительно раньше, то вот они продержались много дольше, вплоть до конца девяностых, а кое-где и до двухтысячных.

Итак, сегодня мы взглянем на прямого предка электронных валидаторов. Посмотрим на тройку самых распространённых моделей и на то, как они устроены и как они кодировались, и разберёмся, как менялись эти девайсы со временем.

STM32U3B5/C5 ultra-low-power MCU features 640 KB RAM, 2 MB Flash, and HSP accelerator to run AI without batteries

STMicroelectronics has added two members to the STM32U3 ultra-low-power Arm Cortex-M33 microcontroller family: the STM32U3B5 and STM32U3C5 MCUs get more sources with up to 640 KB SRAM and 2 MB flash, as well as an HSP (hardware signal processor) accelerator to run AI/ML workloads without batteries, just using energy harvesting. The new chips are still clocked at up to 96 MHz, benefit from a near-threshold design (down to 0.65 V), allowing a power consumption of just 117 Coremark/mW in active mode, and can operate up to 105°C ambient temperature. They come with one additional group of interfaces, bringing the total...

Plantower vs Sensirion — вскрываем лазерные датчики пыли

Ну штош. В этот раз о «железках».
Если вы когда-нибудь делали DIY-датчик воздуха — почти наверняка использовали датчики Plantower 5003 или Novafitness SDS011. Но сегодня мы вскроем Plantower PMS7003 и Sensirion SPS30.

A Live ISO For Those Vibe Coding Experiments

Vibe coding is all the rage at the moment if you follow certain parts of the Internet. It’s very easy to dunk upon it, whether it’s to mock the sea of people who’ve drunk the Kool-Aid and want the magic machine to make them a million dollar app with no work, or the vibe coded web apps with security holes you could drive a bus through.

But AI-assisted coding is now a thing that will stick around whether you like it or not, and there are many who want to dip a toe in the water to see what the fuss...

OpenTitan Ships in Chromebooks: First Production Deployment

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SpyTech: The Underwater Wire Tap

https://invidious.privacyredirect.com/watch?v=mrgR8cMWKVo

In the 1970s, the USSR had an undersea cable connecting a major naval base at Petropavlovsk to the Pacific Fleet headquarters at Vladivostok. The cable traversed the Sea of Okhotsk, which, at the time, the USSR claimed. It was off limits to foreign vessels, heavily patrolled, and laced with detection devices. How much more secure could it be? Against the US Navy, apparently not very secure at all. For about a decade starting in 1972, the Navy delivered tapes of all the traffic on the cable to the NSA.

You need a few things to make this a success. First,...

LEGO Space Computer Made Full Size, 47 Years On

There’s just something delightful about scaled items. Big things shrunk down, like LEGO’s teeny tiny terminal brick? Delightful. Taking that terminal brick and scaling it back to a full-sized computer? Even better. That’s what designer [Paul Staal] has done with his M2x2 project.

In spite of the name, it actually has a Mac Mini M4 as its powerful beating heart. An M2 might have been more on-brand, but it’s probably a case of wanting the most horsepower possible in what [Paul] apparently uses as his main workstation these days. The build itself is simple, but has some great design details. As...

Grinn ReneSOM-V2H is a tiny LGA SoM based on Renesas RZ/V2H processor for vision AI applications

Polish embedded systems company Grinn has recently introduced ReneSOM-V2H, a tiny vision AI SoM built around the Renesas RZ/V2H vision AI processor. Measuring just 42.6 x 37 mm, Grinn claims it is the world’s smallest module based on this specific Renesas MPU, and targets space-constrained Edge AI applications such as smart cameras, robotics, and industrial automation. The RZ/V2H SoC features a heterogeneous architecture with 4x Cortex-A55 cores, 2x Cortex-R8 cores, and 1x Cortex-M33 core, along with a DRP-AI3 accelerator with up to 8 TOPS. It supports LPDDR4 memory and eMMC storage, along with various connectivity options, including PCIe Gen3 (4-lane),...

Using a Solid-State Elastocaloric Cooler to Freeze Water

Elastocaloric materials are a class of materials that exhibit a big change in temperature when exposed to mechanical stress. This could potentially make them useful as solid-state replacement for both vapor-compression refrigeration systems and Peltier coolers.

So far one issue has been that reaching freezing temperatures was impossible, but a recently demonstrated solution (online PDF via IEEE Spectrum) using NiTi-based shape-memory alloys addressed that issue with a final temperature of -12°C achieved within 15 minutes from room temperature.

In the paper by [Guoan Zhou] et al. the cascade cooler is described, with eight...

ADLINK Express-PTL Panther Lake COM Express Type 6 module supports up to Intel Core Ultra 7 368H, 128GB DDR5

ADLINK Express-PTL COM Express Type 6 computer-on-module is built on Intel Core Ultra Series 3 “Panther Lake-H” SoCs up to the 16-core Core Ultra 7 368H processor delivering 180 TOPS of AI performance. The module pairs up to 128 GB DDR5 memory with IBECC support, features high-speed I/O such as PCIe Gen4, multiple display options, USB4/Thunderbolt capability, and industrial features such as TSN Ethernet, TPM 2.0, and advanced power management. As an industrial part, the Express-PTL is designed to operate across an extended –40°C to 85°C temperature range, and targets applications in robotics, industrial automation, medical imaging, transportation, and smart...