Better Solid State Heat Pumps Through Science

https://invidious.privacyredirect.com/watch?v=dOw_fzZh7MM

If you need to cool something, the gold standard is using a gas compressor arrangement. Of course, there are definite downsides to that, like weight, power consumption, and vibrations. There are solid-state heat pumps — the kind you see in portable coolers, for example. But, they are not terribly efficient and have limited performance.

However, researchers at Johns Hopkins, working with Samsung, have developed a new thin-film thermoelectric heat pump, which they claim is easy to fabricate, scalable, and significantly more efficient. You can see a video about the new research below.

Manufacturing requires similar processes to solar cells, and the technology can...

Budget Brilliance: DHO800 Function Generator

The Rigol oscilloscopes have a long history of modifications and hacks, and this latest from [Matthias] is an impressive addition; he’s been working on adding a function generator to the DHO800 line of scopes.

The DHO800 series offers many great features: it’s highly portable with a large 7-inch touchscreen, powered by USB-C, and includes plenty of other goodies. However, there’s room for enhancements. [Matthias] realized that while software mods exist to increase bandwidth or unlock logic analyzer functions, the hardware needed to implement the function generator—available in the more expensive DHO900 series—was missing.

To address this, he designed a daughterboard...

Could Space Radiation Mutate Seeds For The Benefit of Humanity?

Humans have forever been using all manner of techniques to better secure the food we need to sustain our lives. The practice of agriculture is intimately tied to the development of society, while techniques like selective breeding and animal husbandry have seen our plants and livestock deliver greater and more nourishing bounty as the millennia have gone by. More recently, more direct tools of genetic engineering have risen to prominence, further allowing us to tinker with our crops to make them do more of what we want.

Recently, however, scientists have been pursuing a bold new technique. Researchers have explored using...

Ubuntu 25.10 release to mandate RVA23 profile, obsoleting most RISC-V hardware

RISC-V is an open architecture standard that provides flexibility, and chip designers can add or remove instructions as they please to match their application requirements. That’s all great until complex software designed to run on multiple platforms is involved. That’s why for Linux and Android support, the RVA (RISC-V Application) profiles were created, so that every RISC-V SoC designed for those systems meets some minimal requirements and shared instructions, to which you would also add more if needed, as long as they don’t break the standard. The RISC-V association ratified the latest RVA23 profile for 64-bit RISC-V in October 2024,...

RP2350-PiZero – An RP2350 board with Raspberry Pi Zero form factor, mini HDMI, 16MB flash

Waveshare RP2350-PiZero is an update of the RP2040-PiZero, keeping the Raspberry Pi Zero form factor, but replacing the RP2040 MCU with the more powerful RP2350 dual-core Cortex-M33/RISC-V microcontroller. The RP2350-PiZero still comes with 16MB flash, a mini HDMI/DVI connector, two USB Type-C ports, a microSD card slot, and a 40-pin GPIO header. It supports 5V power input via USB-C, as well as LiPo batteries via a 2-pin connector and a charging circuit. RP2350-PiZero specifications: MCU – Microcontroller – Raspberry Pi RP2350B CPU Dual-core Arm Cortex-M33 @ 150 MHz with Arm Trustzone, Secure boot OR Dual-core RISC-V Hazard3 @ 150 MHz...

pg88hiphop

PG88 – Nền tảng cá cược uy tín hàng đầu, nơi hội tụ hàng loạt trò chơi hấp dẫn như đá gà, slot game, xóc đĩa cùng nhiều ưu đãi cực khủng. Hệ thống bảo mật cao, giao diện mượt mà và hỗ trợ tận tâm mang đến trải nghiệm giải trí đỉnh cao. Tham gia PG88 để chinh phục những phần thưởng giá trị mỗi ngày!

NanoPi R76S dual 2.5GbE SBC and router supports up to 16GB LPDDR5, M.2 WiFi module, HDMI 2.0 video output

We just wrote about the NanoPi R3S LTS dual gigabit Ethernet SBC and router with HDMI output and a speaker connector last week, but FriendlyELEC is back again with the similar NanoPi R76S equipped with two 2.5GbE ports, HDMI video output, an M.2 socket for a WiFi/Bluetooth SDIO module, and a more powerful Rockchip RK3576 octa-core SoC coupled with up to 16GB LPDDR5. Like its predecessors, the NanoPi R76S is offered as a bare board or with a metal enclosure. It comes with a 32GB eMMC flash, microSD card slot, a USB 3.0 port for storage or wireless expansion, a...

Kappa4310Rasp – A Modbus RTU HAT for Raspberry Pi based on IS4310 Slave stack chip

The Kappa4310Rasp is a Raspberry Pi-compatible Modbus RTU HAT designed to evaluate the IS4310 Modbus RTU Slave stack chip. This allows engineers to simulate sensor and actuator interactions using a push-button and RGB LED without requiring a custom board or soldering. The board features an RS-485 interface with two RJ45 connectors for daisy-chaining Modbus networks. The board communicates with the Raspberry Pi over I²C and supports 500 Holding Registers along with Function Codes 3 (Read Holding Registers), 6 (Write Single Register), and 16 (Write Multiple Registers). The HAT operates at 3.3V and includes jumpers to enable or disable onboard I²C...

Enter the Meadow – Claire L. Evans

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What draws me to nature is how persistently it defies capture. I could count each blade of grass, every worm, ant, bud, and splat of bird-shit, and still know nothing about this meadow. It’d be about as useful as counting grains of sand on a beach. Claire L. Evans Claire beautifully captures the naivety and […]

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Nikita Diakur (2025 Website)

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Nikita Diakur aka UglyFilm, has a new website! This may’ve happened some time ago but new to me. If you’re unfamiliar with Nikita’s work, head over there now and see the amazing films he’s been making for a few years now.

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