Waveshare RP2040-GEEK is a development board that looks like a USB flash drive but is based on a Raspberry Pi RP2040 microcontroller with a 1.14-inch 65K color LCD and some expansion ports all housed in a white plastic case. The device comes with a 4MB flash to store the firmware, a microSD card slot for data storage, a BOOT button to enter bootloader mode, two 3-pin connectors for UART and SWD debug, and a 4-pin I2C port. Waveshare RP2040-GEEK specifications: MCU – Raspberry Pi RP2040 dual-core Arm Cortex-M0+ microcontroller clocked up to 133 MHz with 264 kB SRAM Storage – 4MB flash (W25Q32JVSSIQ) and microSD card slot Display – 1.14-inch 240×135 pixel 65K color IPS LCD display USB – 1x USB Type-A female port for power and programming Debugging – 3-pin SWD port for connecting a target board; the standard CMSIS-DAP interface can be used to debug most Arm-based microcontrollers; […]
Ovrdrive USB is an open-source, privacy-oriented USB flash drive that can self-destruct (Crowdfunding)
We have previously covered the Tillitis Tkey, an open-source security key in a USB-C case but the Ovrdrive USB stick is not a security key. It is a simple, plain USB flash drive with a special security feature. It will appear completely blank unless you plug this drive in three times in quick succession. The Ovrdrive flash drive is aimed at journalists in repressive areas and security researchers but may be useful to other security and open-source hardware enthusiasts. As for how it works, the Ovrdrive has two identical circuits connected to the ATtiny24A microcontroller that controls the rapid plug-in functionality. When the flash is plugged in, the microcontroller powers on, and the CHG1 node goes high, charging C3 through D2. The pin will remain high for a while and then slowly discharge via R1 and body resistance. C3 and the identical C14 will remain high through power cycling/a quick […]
Solar power manager module supports 6V-24V input range, battery charging, MPTT function, and outputs 5V/3A
Waveshare Solar Power Manager Module (D) is a compact power module for solar panels with support for 6V to 24V input, MPTT (Maximum Power Point Tracking), and battery charging. It outputs 5V up to 3A via a USB-C port or terminal block and should be suitable for a range of projects. A few weeks ago, we wrote about the FireBeetle 2 ESP32-C6 IoT development board with DFRobot highlighting support for solar charging of lithium batteries thanks the the CN3165 chip. But with a range of just 4.5 to 6V for solar panel input and a lack of support for MPTT, several readers were unimpressed by the solution. The Waveshare Solar Power Manager Module (D) recently popped up in my news feed, and I thought it might be worth a look. Waveshare Solar Power Manager Module (D) specifications: Solar panel input 6V to 24V via DC jack or 2-pole screw terminal […]
Mcuzone MP4GM 4G LTE PCIe Module for Raspberry Pi 5 also adds three USB 2.0 interfaces
Mcuzone recently announced the MP4GM, a new 4G LTE module for the Raspberry Pi 5 SBC. This module connects to the Raspberry Pi 5 via PCIe and includes three extra 1.25mm JST connectors for three additional USB 2.0 interfaces. This HAT is compatible with various 4G LTE mini PCIe modules from Mcuzone and Fibocom, providing flexible options for 4G connectivity. We have previously covered a 5G Modem Kit for the Raspberry Pi 5, but this is the first time we have found out about a 4G LTE kit designed for the Pi 5. We have also covered Mcuzone RK3308 SoM and the MDK3308-EK Evaluation Kit, designed for smart voice applications as well as a Raspberry Pi CM4 board with dual Ethernet capabilities all from MCUzone. So, feel free to check those out if you are interested in their products. Mcuzone MP4GM 4G LTE module specification: Model – MP4GM PCIe to […]
Tillitis Tkey is an open-source RISC-V security key in a USB-C case
Tillitis’ TKey is a small, simple security key in a USB-C form factor, and described as a “new type of flexible USB security token” that is inspired by DICE (Device Identifier Composition Engine) and measured boot powered by a simple 32-bit RISC-V core, the PicoRV32, in a Lattice iCE40 UP5K FPGA. While we have covered hardware security modules in the past, this is the first security key we have seen that is based on an FPGA running a RISC-V core. The security token lacks persistent, onboard storage, unlike alternatives such as Yubikey Neo. Apps need to be loaded onto the key every time it is connected to a host device. It uses measured boot to generate a unique identifier for each application and is more secure than the alternatives since private keys are not stored on the device. Also, the hardware and software for the TKey are completely open-source for […]
$44 5G M.2 to Ethernet and USB “converter” takes M.2 5G PCIe modules
Waveshare “5G M.2 to Gigabit Ethernet converter, 5G M.2 to USB3 converter” is a single device designed to easily and cheaply add 5G connectivity to a LAN through a gigabit Ethernet port or to a specific host like a PC or a Raspberry Pi SBC through a USB 3.1 Type-C port. The 5G M.2 to Ethernet and USB converter is flexible as by default it does not ship with a 5G module, but features an M.2 Key-B socket for 5G 3042 or 3052 modules allowing it to meet the requirements of a specific location. 5G M.2 to Ethernet and USB converter key features and specifications: Cellular M.2 Key B socket for 3042/3052 5G modules from SIMCom (SIM82XX), Quectel (RM5XX), and Fibocom (FM160XX) Onboard standard SIM card slot 4x 5G omnidirectional high-gain antennas Ethernet – Gigabit Ethernet RJ45 port using RealTek RTL8125 controller USB – USB 3.1 Type-C port for connection […]
T-Keyboard-S3 4-key USB mechanical keyboard features keycaps with 0.85-inch color display
LILYGO T-Keyboard-S3 is an ESP32-S3 powered USB mechanical keyboard with four keys each equipped with a keycap featuring a 0.85-inch 128×128 color display to show different icons or characters. We have already covered several programmable small mechanical keyboards/keypads or macropads, so the first time I saw the T-Keyboard-S3 I did not think much of it until I read the $65 price tag on Aliexpress which I found excessive for this type of device. That’s only until I realized that each resin keycap has its own color display that the price made sense, and it makes quite a versatile macropad as you could easily program multiple layouts depending on the use case. T-Keyboard-S3 specifications: Wireless module ESP32-S3-WROOM-1 MCU – ESP32-S3R8 dual-core LX7 microprocessor @ up to 240 MHz with Vector extension for machine learning Memory – 8MB PSRAM Storage – 16MB SPI flash Connectivity – WiFi 4 and Bluetooth 5 with LE/Mesh […]
How to use a monitor and USB mouse/keyboard in Promox VE on an Intel Alder Lake-N mini PC
We’ve started to see several Alder Lake-N platforms acting both as a mini PC and a router or network appliance with products such as iKOOLCORE R2 or CWWK x86-P5 which features not only the usual HDMI, USB, and single Ethernet port, but come with multiple Ethernet ports making them ideal to run Proxmox VE to simultaneous run a desktop OS such as Ubuntu 22.04 or Windows 11 and a headless network OS such as pfSense or OpenWrt. I’m currently reviewing iKOOLCORE R2 mini PC that comes with four 2.5GbE ports and I could install Ubuntu 22.04 Desktop, pfSense 2.7.1, and OpenWrt 23.05 relatively easily, but the Ubuntu desktop is only visible in the Proxmox VE dashboard and the HDMI display physically connected to the mini PC only shows Proxmox VE login prompt. So at this point, I learned that I had to enable PCIe passthrough for the GPU in Proxmox […]