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Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on Eazeye Radiant 15.6-inch portable transflective LCD review

Eazeye Radiant 15.6-inch portable transflective LCD review

Eazeye Radiant transflective LCD sunlight vs laptop

Eazeye sent me a sample of the Radiant 15.6-inch transflective LCD review for review after I wrote about the Eazeye 2.0 24-inch reflective LCD monitor last August. Yes, there’s been a little bit of miscommunication as I got a transflective LCD (TLCD) launched last year, instead of the new reflective LCD (RLCD). But that’s OK. While those are two different technologies, both monitors are designed to rely on natural light, and I assumed either would perform better outdoors and reduce eye strain compared to traditional portable monitors or laptop displays. Let’s find out. Eazeye Radiant unboxing and specifications I received the portable monitor in a retail box. The main surprise here was that I was expecting a 24-inch monitor, and this looked a little small. I quickly realized the Radiant was a 15.6-inch model instead. We can get part of the specifications on the back side of the package. But […]

Posted on by Debashis Das - 13 Comments on $69 Sipeed SLogic16U3 low-cost logic analyzer supports 3.2 Gbps bandwidth, 150+ protocols

$69 Sipeed SLogic16U3 low-cost logic analyzer supports 3.2 Gbps bandwidth, 150+ protocols

Sipeed SLogic16U3 USB3 Logic Analyzer

The SLogic16U3 is a compact, low-cost USB 3.0 logic analyzer with up to 3.2 Gbps bandwidth and 16 input channels, designed for debugging, reverse-engineering, and verifying digital circuits and embedded systems. The device supports sampling rates up to 800MS/s with four channels, 400MS/s with eight channels, and 200MS/s with sixteen channels via a 5 Gbps USB 3.0 interface. On top of that, it supports 0–10V inputs and features adjustable trigger thresholds (0–6V). Housed in a 40×40×10 mm compact aluminum case, it supports over 150 protocols like SPI, I²C, UART, CAN, and JTAG, and provides edge-based triggering with real-time streaming over USB. The device can be extended as an oscilloscope via an optional ADC module and integrates seamlessly with Sigrok and PulseView software for waveform visualization. SLogic16U3 specifications: MCU – TBD Input channels – 16 digital channels Sampling rates 800MS/s @ 4 channels 400MS/s @ 8 channels 200MS/s @ 16 channels […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 122 Comments on Giveaway Week 2025 – USB Vsense USB PD voltage indicator

Giveaway Week 2025 – USB Vsense USB PD voltage indicator

USB Vsense MINIX NEO P2 stress test

The fifth prize of CNX Software Giveaway Week 2025 will be the USB Vsense USB PD voltage indicator. I received three samples for review last August, so I’m keeping one for myself, giving one here on CNX Software (International), and another one on CNX Software Thailand. It’s a simple device with two USB-C ports and color-coded LEDs showing the voltage supported from 5V up to 48V as defined in the Extended Power Range (EPR) specs. In my review, I found the little device to work as expected, testing it with various USB PD adapters connected to a laptop and a Raspberry Pi 5 SBC. There are already such USD PD voltage testers on the market, and what differentiates the Vsense from the rest is its multi-layered design, since it’s made of seven PCBs stacked on top of each other and secured with four screws. To enter the draw, simply leave […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 4 Comments on Bluetooth 6.2 gets more responsive, improves security, USB communication, and testing capabilities

Bluetooth 6.2 gets more responsive, improves security, USB communication, and testing capabilities

Bluetooth 6.2

Bluetooth 6.2 specification has just been released with a range of new features to enhance responsiveness with shorter connection intervals, strengthen security against amplitude-based RF attacks, and improve communication with a new “Bulk Serialization Mode” that’s especially useful for USB Bluetooth LE audio applications. The new Bluetooth Core 6.2 specification also introduces various BLE Test Mode enhancements. If you feel like Bluetooth specifications are released more often than in the past, that’s normal because the Bluetooth SIG switched to a bi-annual release schedule. For instance, the Bluetooth 6.1 specification was just published last May, or about 6 months ago… Bluetooth 6.2 highlights: Bluetooth Shorter Connection Intervals (SCI) reduce the minimum Bluetooth LE connection interval from 7.5 ms to just 375 µs for faster responsiveness. The change will especially impact high-performance HID devices, real-time human-machine interfaces (HMIs), and latency-sensitive sensors. AR/VR and gaming applications will particularly benefit from the lower latency. […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on HackBEE is a Raspberry Pi RP2350 USB-C dongle for developers (Crowdfunding)

HackBEE is a Raspberry Pi RP2350 USB-C dongle for developers (Crowdfunding)

Raspberry Pi RP2350 USB-C dongle

Hack the Board’s HackBEE is a tiny programmable USB-C dongle and development platform powered by the Raspberry Pi RP2350 Arm Cortex-M33/Hazard3 RISC-V microcontroller. It supports USB host and device modes, has side buttons, and includes a multi-color RGB LED for feedback. The device can be used as a programmable HID device (keyboard/mouse/media controller), a USB host or device for testing and prototyping, an automation tool for repetitive tasks, a compact input emulator, or a teaching tool for C/C+, MicroPython, and embedded systems education. HackBEE specifications: MCU – Raspberry Pi RP2350A CPU Dual-core Arm Cortex-M33 @ 150 MHz with Arm Trustzone, Secure boot OR Dual-core RISC-V Hazard3 @ 150 MHz Either two cores can be used. Memory – 520 KB on-chip SRAM Package – QFN-60 Storage – Not disclosed USB – 1x USB Type-C host/device port Security – Arm TrustZone for Cortex-M33 cores, optional boot signing (OTP), protected OTP storage, SHA-256 […]

Posted on by Debashis Das - 10 Comments on Palm-sized PocketPD USB-C programmable power supply delivers up to 21V/5A output (Crowdfunding)

Palm-sized PocketPD USB-C programmable power supply delivers up to 21V/5A output (Crowdfunding)

PocketPD USB PD Programmable Power Supply (PPS)

PocketPD is a compact USB PD programmable power supply developed by CentyLab in Salem, Oregon. Designed to fit in your pocket, it provides precise, programmable voltage and current control using the USB Power Delivery 3.0 PPS mode. The device outputs 3.3V to 21V at up to 5A, features constant voltage/current modes, and includes a 0.96-inch OLED display for real-time monitoring. Powered by a Raspberry Pi RP2040 MCU and AP33772 PD controller, it supports fine adjustment in 20mV/50mA steps, with built-in protections against short circuits and reverse current. Weighing just 63g, PocketPD also offers magnetic mounting, open-source firmware, and KiCad hardware files for customization. The company offers two versions, featuring either a detachable screw terminal or Anderson Powerpole/XT60 connector options. PocketPD specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ 125 MHz with 264 KB SRAM Storage – Non-volatile storage for user profiles (voltage/current settings) Display – 0.96-inch OLED display […]

Posted on by Debashis Das - 8 Comments on Waveshare MK20 macro keyboard features twenty mechanical keys with 0.85-inch color LCD keycaps

Waveshare MK20 macro keyboard features twenty mechanical keys with 0.85-inch color LCD keycaps

Waveshare MK20 Multi Functional AI Voice Control Panel

Waveshare MK20 is a multifunctional macro keyboard with twenty mechanical keys featuring 0.85-inch LCD keycaps. As an upgrade to the earlier MK10 model, it adds a 2.8-inch secondary display along with two control knobs. The device supports AI voice interaction, real-time data display, and smart home integration with Home Assistant. Like its predecessor, the MK20 relies on a dual-system architecture: an Allwinner T113-S3 dual-core Cortex-A7 processor runs Linux to drive the displays, and a GD32 microcontroller runs QMK for low-latency keyboard and knob input. Each LCD key offers 128×128 resolution and supports dynamic images, videos, and multi-layer overlays, while the 2.8-inch secondary display (428 × 142 resolution) provides status or customization information. The keyboard also includes two rotary encoders with aluminum caps for volume, playback, or timeline control. The device is built with an aluminum alloy top case and a 2.5D acrylic lens for durability. Waveshare MK20 specifications: Main Controller – Allwinner […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on 4-inch square HDMI displays with USB touchscreen sell for $33 and up

4-inch square HDMI displays with USB touchscreen sell for $33 and up

4-inch HDMI touchscreen displays raspberry pi

We’ve already seen some small HDMI displays, mostly useful for SBCs like Raspberry Pi boards, including a 7-inch monitor with a stand, a 7-inch HDMI touchscreen display, and a 7.9-inch ultrawide HDMI display. Today, I’ve come across another form factor with two 4-inch square HDMI touchscreen displays with 720×720 resolution: the VIEWE model appears to be new and is the cheaper of the two at about $33, while the Waveshare “4inch HDMI LCD (C)” has been around for a couple of years and offers extra features such as a 3.5 mm audio jack and speakers support, and mounting for Raspberry Pi 3/4/5 single board computers with adapters. VIEWE 4-inch square HDMI touchscreen display VIEWE 4-inch HDMI display (UEDX72720040-HMD-RB-A) specifications: Display 4-inch square HDMI TFT display with 720×720 resolution ST7703 display driver Brightness – 300 cd/㎡ Active area – 71.93 x 71.93 mm Touchscreen – 5-point capacitive touch screen via USB-C […]

Banana Pi BPI-R4 Pro networking SBC