A Deep Drive Deep Dive Into a Twin-Rotor Motor

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

Compromise is key to keeping a team humming along. Say one person wants an inrunner electric motor, and the other prefers outrunner. What to do? Well, if you work at [Deep Drive], the compromise position is a dual-rotor setup that they claim can be up to 20% more efficient than standard designs. In a recent video, [Ziroth] provides a deep dive into Deep Drive’s Twin-Rotor Motor. 

This is specifically a radial flux permanent magnet motor, like most used in electric vehicles today — and don’t let talk of inrunners and outrunners fool you, that’s the size of motor we’re talking about...

Keebin’ with Kristina: the One with the C64 Keyboard

https://invidious.privacyredirect.com/watch?v=7ZcFbvHClcU

[Jean] wrote into the tips line (the system works!) to let all of us know about his hacked and hand-wired C64 keyboard, a thing of beauty in its chocolate-brown and 9u space bar-havin’ glory.

Image by [Jean] via GitHubThis Arduino Pro Micro-based brain transplant began as a sketch, and [Jean] reports it now has proper code in QMK. But how is a person supposed to use it in 2025, almost 2026, especially as a programmer or just plain serious computer user?

The big news here is that [Jean] added support for missing characters using the left and right Shift keys, and even...

The stack circuitry of the Intel 8087 floating point chip, reverse-engineered

Early microprocessors were very slow when operating with floating-point numbers. But in 1980, Intel introduced the 8087 floating-point coprocessor, performing floating-point operations up to 100 times faster. This was a huge benefit for IBM PC applications such as AutoCAD, spreadsheets, and flight simulators. The 8087 was so effective that today's computers still use a floating-point system based on the 8087.1

The 8087 was an extremely complex chip for its time, containing somewhere between 40,000 and 75,000 transistors, depending on the source.2 To explore how the 8087 works, I opened up a chip and took numerous photos of the silicon die with a microscope. Around the edges of the die, you...

7.3-inch full color e-paper wooden photo frame is designed for the Raspberry Pi Zero

Waveshare RPi-Zero-PhotoPainter-ACCE is a 7.3-inch color e-paper photo frame designed for the Raspberry Pi Zero family. It’s an 800×480 resolution display based on E-Ink Spectra 6 (E6), and housed in a wooden frame. The display also features an RTC with backup battery support, a LiPo battery connector with “UPS circuitry”, a USB-C port for power, a 3-pin debug/serial header, a power button, and a charging LED. It supports portrait and landscape orientation on the desk thanks to a rotatable stand and wall mounting through a hook hanger. RPi-Zero-PhotoPainter-ACCE specifications: Display – E-Ink Spectra 6 (E6) Full-color display with Black, White,...

FlashESP is an all-in-one web-based tool for ESP32/ESP8266 Arduino development and firmware flashing

FlashESP is a web-based tool allowing the development of Arduino sketches and firmware flashing for ESP32 and ESP8266 hardware platforms. I initially thought it was similar to ESP Web Tools for flashing firmware from the web and used by projects like ESPHome, but it goes further than that, and it looks like an Arduino Cloud Editor for ESP32/ESP8266 instead, since users can select boards, write code, load libraries, and flash the resulting firmware from a compatible web browser without installing anything else on their computer. FlashESP key features: Cloud Compilation – Real-time compilation with live logs. Auto Configuration – Intelligent...

Radxa C200 Orin Developer Kit – An NVIDIA Jetson Orin NX 8GB devkit with three M.2 PCIe 4.0 slots

The Radxa C200 is a compact developer kit built around the NVIDIA Jetson Orin NX 8GB module. It features three PCIe 4.0 NVMe slots and 117 TOPS AI “Super Mode” for high-speed storage expansion, fast-bootable SSDs, and data-intensive AI workloads. It supports 8GB LPDDR5 memory, two M.2 M-Key slots (PCIe 4.0 x2/x4) for NVMe storage or other expansion, and an M.2 E-key (PCIe 4.0 x1) slot for Wi-Fi/BT or other compatible modules. Ports include DisplayPort 1.2 video output, four USB 3.2 Gen2 Type-A ports, a USB Type-C port with recovery mode, Gigabit Ethernet, two MIPI CSI interfaces, and a 40-pin...

The DC-ROMA II is the fastest RISC-V laptop and is odd

The DC-ROMA II is the fastest RISC-V laptop and is odd

Inside this Framework 13 laptop is a special mainboard developed by DeepComputing in collaboration with Framework. It has an 8-core RISC-V processor, the ESWIN 7702X—not your typical AMD, Intel, or even Arm SoC. The full laptop version I tested costs $1119 and gets you about the performance of a Raspberry Pi.

A Pi 4—the one that came out in 2019.

NestDisk – An Intel N150 NAS, mini PC, and AI Box with four M.2 PCIe slots

Youyeetoo NestDisk in an Intel N150 mini PC that can be used as a mini NAS or AI box, thanks to four M.2 PCIe slots that can be fitted with NVMe SSDs or AI accelerator cards and two 2.5GbE network ports. The computer features 12GB LPDDR5 of memory, a 64GB eMMC flash, two HDMI 2.1 ports, a headphone jack, WiFi 6 connectivity, a full-function USB-C port, and three USB 3.2 ports. It’s not a fanless design, since it’s actively cooled with a 30mm internal “silent fan”, and an external USB dual fan accessory is available as an option. NestDisk specifications:...

Quarky Intellio – A LEGO-compatible AI, Augmented Reality, and IoT learning platform (Crowdfunding)

Quarky Intellio is an ESP32-S3-based development kit designed as an educational platform for learning AI, Augmented Reality (AR), and IoT concepts. It is compatible with LEGO bricks and targets users aged 10 and older. The core AI-AR module features an SPI TFT display interface, a 5MP camera, a speaker and microphone, a microSD card slot for data storage, a USB-C port for programming and charging, servo and GPIO expansion ports, and a 1,000 mAh battery. The company offers a discovery kit with the core module only as well as a rover car kit, and since it’s compatible with LEGO, users...

Nordic nRF7002 EBII adds dual-band Wi-Fi 6 to nRF54L series development kits

Nordic has introduced the nRF7002 EBII as an updated Wi-Fi 6 expansion board for its nRF54L series development kits. The earlier nRF7002 WiFi 6 board was a low-cost add-on for the Thingy:53, mainly for basic prototyping. The new EBII is designed for the newer nRF54L series of SoCs with dual-band Wi-Fi 6 support, power-profiling options, and more. Built around the nRF7002 Wi-Fi Companion IC, it supports Wi-Fi 6 features such as TWT, OFDMA, and BSS coloring for power efficiency and reduced interference. The EBII communicates with nRF54L15 and nRF54LM20 DKs through SPI/QSPI host interfaces, and includes headers for power profiling. Additionally,...