In recent years, tools such as the FlipperZero have become quite popular amongst hobbyists and security professionals alike for their small size and wide array of hacking tools. Inspired by the functionality of the FlipperZero, Project Hub user ‘andreockx’ created a similar multi-radio tool named the CapibaraZero, which has the same core abilities and even a little more.

The project uses an Arduino Nano ESP32 as its processor and as a way to provide Wi-Fi, Bluetooth Low-Energy, and human interface features. The chipset can scan for nearby Wi-Fi networks, present fake captive portals, prevent other devices from receiving IP addresses through DHCP starvation, and even carry out ARP poisoning attacks. Andre’s inclusion of a LoRa radio module further differentiates his creation by letting it transmit information in the sub-GHz spectrum over long distances. And lastly, the PN532 RFID module can read encrypted MiFare NFC tags and crack them through brute force.

This collection of the Nano ESP32, wireless radios, and a LiPo battery + charging module were all attached to a custom PCB mainboard while five additional buttons were connected via secondary daughterboard before the entire assembly was placed into a 3D printed case.

For more details about the CapibaraZero, you can read Andre’s write-up here on the Project Hub.

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Retrocomputing enthusiasts will be delighted to learn that a new ZX Spectrum replica is on the market: the ESP32 Rainbow. The single board computer swaps the Zilog Z80 for an ESP32-S3 microcontroller chip running an emulator, bringing the classic 80s computer back to life with a modern twist. It features a built-in color display, a microSD card slot for storage, a built-in touch keyboard in the ZX Spectrum style, and a USB Type-C port for power and data. The keyboard was recreated using full-color UV printing and is the most true-to-life component of the ESP32-S3-based ZX Spectrum single board computer. The touch keys won’t likely offer the best typing experience but that is reminiscent of the original ZX Spectrum. A lovely cherry on top is that the onboard USB-C port supports HID and the device can be used as a keyboard on another computer. The ZX Spectrum is one of [...]

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While Black Friday and Cyber Monday used to be a US-only event, it changed many years ago, and we’ve been writing about international Black Friday and Cyber Monday deals and coupon codes since 2014, since a large portion of our audience cannot benefit from promotions on Amazon’s Black Friday and Cyber Monday events that will take place from November 21 until December 2 this year. So I’ve gathered some international Black Friday and Cyber Monday 2024 deals and discount coupon codes from relevant manufacturers and popular online stores such as Aliexpress, Banggood, and others. Aliexpress Black Friday and Cyber Monday event   Aliexpress’ Black Friday and Cyber Monday 2024 event has already started. There are three periods: Nov 19-21 PST – Warm Up event where users can find and add items to the cart before purchasing during the main event. Nov 22-30 PST – “On Sale” event with discounts up [...]

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DFRobot’s EDGE102-DMX512 is a DMX512 lighting programming controller based on ESP32-S3 wireless MCU designed for efficient management of stage, theater, and venue lighting. With integrated WiFi and Bluetooth, the controller supports wireless programming and control, simplifying the setup of advanced lighting systems. It offers RS485 (master/slave modes) interfaces, I2C, UART, and GPIO pins for compatibility with a wide range of sensors and boards. This controller enables automation through sensor integration, supporting devices such as infrared detectors, sound level meters, and laser sensors. Its eight optically isolated industrial switch inputs ensure seamless compatibility with PNP sensors, allowing lighting effects to respond automatically to environmental inputs. By reducing dependence on manual DMX consoles, it is well-suited for automated lighting in theaters, stages, and commercial venues. EDGE102-DMX512 specifications: SoC – Espressif ESP32-S3 CPU – Dual-core Tensilica LX7 up to 240 MHz with vector instructions for AI acceleration Memory – 512 KB of internal [...]

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Conexio Stratus Pro nRF9151 is an IoT development kit based on Nordic Semi nRF9151 system-in-package (SiP) with LTE-M/NB-IoT, DECT NR+, and GNSS connectivity designed for battery-powered cellular-connected products such as asset trackers, environmental monitors, smart meters, and industrial automation devices. It’s offered with the “Stratus Pro Expansion Dock” allowing users to add WiFi 6 through an nRF7002 expansion board and various other modules via Grove, Qwiic, MikroBus, and Seeed Studio’s XIAO connectors or sockets. It’s an update to the original Conexio Stratus Pro based on nRF9161 introduced last June with a very similar feature set. Let’s have a deeper look to find out any potential differences between the two versions of the devkit. Conexio Stratus Pro nRF9151 specifications (with changes highlighted in bold or strikethrough): System-in-package – Nordic Semi nRF9151 SiP MCU – Arm Cortex-M33 clocked at 64 MHz with 1 MB Flash pre-programmed MCUBoot bootloader, 256 KB RAM Modem [...]

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Create Your Own Bot (CYOBot) v2 is an open-source, modular robotics platform for students, educators, hobbyists, and future engineers based on the ESP32-S3 microcontroller and featuring up to 16 servo motors for complex control. The CYOBot v2 is a follow-up to the previous quadrupedal robotic platform from the same company. It adds new features such as a modular design, an upgrade to the ESP32-S3 chip, more motor channels, and an expansion block with more peripherals. It also supports integrating AI systems, such as ChatGPT, for added functionality. The CYOBot supports up to three configurations via the CYOBrain — which powers the robotics platform and controls the servo motors — and separate 3D-printed components. The CYOBot Crawler is a four-legged robot powered by eight 180-degree servo motors. The CYOBot Wheeler form factor features four 360-degree motors linked to wheels at the end of each leg and is essentially a hybrid between [...]

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Waveshare ESP32-P4-NANO is the first third-party ESP32-P4 RISC-V board we’ve seen and it follows the launch of the Espressif Systems’ ESP32-P4-Function-EV-Board devkit introduced this summer. While the ESP32-P4 is a general-purpose microcontroller, the ESP32-P4-NANO board still implements wireless connectivity through an ESP32-C6 WiFI 6 and Bluetooth LE 5.4 module and offers a range of interfaces such as an Ethernet RJ45 port with optional PoE, MIPI DSI and CSI interfaces, a USB Type-A OTG port, and GPIO headers for expansion. ESP32-P4-NANO specifications: Microcontroller – ESP32-P4NRW32 MCU Dual-core RISC-V microcontroller @ 400 MHz with AI instructions extension and single-precision FPU Single-RISC-V LP (Low-power) MCU core @ up to 40 MHz GPU – 2D Pixel Processing Accelerator (PPA) VPU – H.264 and JPEG codecs support Memory – 768 KB HP L2MEM, 32 KB LP SRAM, 8 KB TCM, 32MB PSRAM Storage – 128 KB HP ROM, 16 KB LP ROM Wireless module – [...]

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The M5Stack Module LLM is yet another box-shaped device from the company that provides artificially intelligent control without internet access. It is described as an “integrated offline Large Language Model (LLM) inference module” which can be used to implement local LLM-based solutions in smart homes, voice assistants, and industrial control. Module LLM is powered by the AX630C SoC, equipped with 4GB LPDDR4 memory, 32GB storage, and a 3.2 TOPS (INT8) or 12.8 TOPS (INT4) NPU. M5Stack says the main chip has an average runtime power consumption of 1.5W, making it suitable for long-term operation. It has a built-in microphone, speaker, microSD card slot, and USB OTG. The USB port can connect peripherals such as cameras and debuggers, and the microSD card slot supports cold and hot firmware updates. The M5Stack Module LLM joins the list of other offline, on-device LLM-based solutions, such as the SenseCAP Watcher, Useful Sensors’ AI in [...]

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The USB Insight Hub is a USB testing tool based on the ESP32-S2 wireless SoC made by Ecuador-based company Aerio Solutions SAS and aimed at developers and tech enthusiasts. The Insight Hub connects to a computer via a USB Type-C port and expands it to three downstream ports, each with a 1.3-inch color display screen that displays information about the serial device such as its assigned enumeration name, voltage, and current. The enumeration name displayed helps to identify all virtual ports running through the Insight Hub. This feature is quite handy when multiple devices are connected. Although the hub features a Wi-Fi-enabled SoC, it doesn’t currently support wireless networking. Each downstream port is connected to a dedicated voltage and current meter for real-time feedback. Also, the hub implements configurable short-circuit, over-current, and back-current protection. It also allows you to control the individual activation and deactivation of the D+/D- data lines [...]

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MicroPython has become one of the most popular ways of programming microcontrollers, and the just-released MicroPython v1.24 adds support for the widely-used Raspberry Pi RP2350 and Espresif ESP32-C6 microcontrollers and a range of other changes. Those include improved RISC-V support with native code generation, an updated Zephyr v3.7.0 RTOS with threading support, unified TinyUSB bindings across ports, a portable UART IRQ API, and enhanced mpremote recursive copy. Damien George goes into more detail about the RISC-V improvements: … include an RV32IMC native code emitter, native NLR and GC register scanning implementations for 32- and 64-bit RISC-V, support for placing RV32IMC native code in .mpy files and also freezing it, and RISC-V semihosting support. Testing for RISC-V is done with the qemu and unix ports, and the support is utilised in the esp32 and rp2 ports. The Raspberry Pi RP2350 comes with both Arm Cortex-M33 and RISC-V cores, and the good [...]

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Engineer and YouTuber Carl Bugeja recently developed CodeCell, a tiny ESP32-C3 development board designed as the brain for robots, wearables, and smart home devices. This module features a nine-axis inertial measurement unit (IMU) for motion fusion and an optional VCNL4040 light sensor. It includes a USB Type-C port for data and power as well as a lithium-polymer battery with a charging circuit. Measuring just 18.5 x 18.5mm this compact board is even smaller than other tiny ESP32 development boards such as Waveshare’s ESP32-S3-Zero and Seeed Studio’s XIAO ESP32S3. However, the Epi C3 is smaller at 23 x 12.75 mm, and so are the Unexpected Maker NANOS3 (25 x 10 mm) and Unexpected Maker OMGS3 (28 x 11 mm). CodeCel ESP32-C3 mini development board specification Microcontroller – ESP32-C3 RISC-V MCU 160MHz 32-bit RISC-V processor core 400kB SRAM, 4MB flash storage Wi-Fi 4 and Bluetooth Low Energy (BLE) connectivity Sensors Vishay VCNL4040 light [...]

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Seeed Studio has recently launched the OpenUC2 10x AI portable microscope built around the XIAO ESP32-S3 Sense module. Designed for educational, environmental research, health monitoring, and prototyping applications this microscope features an OV2640 camera with a 10x magnification with precise motorized focusing, high-resolution imaging, and real-time TinyML processing for image handling. The microscope is modular and open-source making it easy to customize and expand its features using 3D-printed parts, motorized stages, and additional sensors. It supports Wi-Fi connectivity with a durable body, uses USB-C for power and swappable objectives make it usable in various applications. Previously we have written about similar portable microscopes like the ioLight microscope and the KoPa W5 Wi-Fi Microscope, and Jean-Luc also tested a cheap USB microscope to read part number of components. Feel free to check those out if you are looking for a cheap microscope. OpenUC2 10x specifications: Wireless MCU – Espressif Systems ESP32-S3 CPU [...]

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Waveshare has recently launched the ESP32-S3-ETH development board with an Ethernet RJ45 jack, a camera interface, and compatibility with Raspberry Pi Pico HAT expansion boards. This board includes a microSD card interface and supports OV2640 and OV5640 camera modules. Additionally, it offers an optional Power over Ethernet (PoE) module, making it ideal for applications such as smart home projects, AI-enhanced computer vision, and image acquisition. Previously, we have written about LILYGO T-ETH-Lite, an ESP32-S3 board with Ethernet and optional PoE support. We have also written about LuckFox Pico Pro and Pico Max, Rockchip RV1106-powered development boards with 10/100M Ethernet and camera support. The ESP32-S3-ETH board is like a combination of those two, where you get an ESP32-S3 microcontroller, Ethernet (with optional PoE), and a camera interface. ESP32-S3 ETH development board specifications: Wireless module ESP32-S3R8 MCU – ESP32-S3 dual-core LX7 microprocessor @ up to 240 MHz with Vector extension for machine learning Memory – 8MB PSRAM Storage [...]

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Waveshare has launched an ESP32-S3 1.91-inch AMOLED development board with a 6-axis motion sensor designed for the rapid prototyping of IoT and portable projects with interactive displays. The board is built around the ESP32-S3R8 chip, featuring a 32-bit LX7 dual-core processor running at up to 240MHz, with integrated 2.4GHz Wi-Fi and Bluetooth BLE 5. It also includes 16MB Flash, 8MB PSRAM, 512KB SRAM, and 384KB ROM for efficient processing and memory management. At the core of its display capabilities is a 1.91-inch AMOLED screen with a 240×536 resolution, supporting 16.7 million colors. Powered by the RM67162 controller and connected via the QSPI interface, the display is ideal for running GUI applications like LVGL. The board is available in both touch and non-touch versions, with the touch-enabled models using the FT3168 touch IC. Other features include a QMI8658 6-axis IMU, a microSD card slot, and a Lithium battery header. The ESP32-S3 [...]

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Last year, we reviewed the MR60FDA1 60GHz mmWave fall detection sensor kit, which utilizes the XIAO ESP32C3 module as its core. This module, featuring both Wi-Fi and Bluetooth connectivity, opens up various IoT applications. Now, Seeed Studio has introduced advanced mmWave sensor modules specifically designed for enhanced fall detection and heartbeat monitoring. The MR60FDA2 is optimized for fall detection, while the MR60BHA2 is designed for heartbeat monitoring. Powered by an ESP32-C6 WiFi 6 and RIS-Bluetotoh LE microcontroller, these modules offer reliable detection for real-time fall monitoring and accurate heartbeat tracking. They also feature customizable RGB LEDs and ambient light sensors, providing additional flexibility. With expansion options via Grove GPIO ports, these versatile modules are well-suited for applications like smart home integration and healthcare monitoring. Previously, we covered the RoomSense IQ and the DesignCore RS-6843AOPU with mmWave technology. The RoomSense IQ is an ESP32-S3-based modular room monitor with mmWave radar presence [...]

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The ESP32-C5-DevKitC-1 is another upcoming entry-level development board designed for IoT applications, featuring the ESP32-C5-WROOM-1 module. This board supports key wireless protocols, including Wi-Fi 6 (2.4 GHz and 5 GHz), Bluetooth LE 5, Zigbee, and Thread. The ESP32-C5-WROOM-1 module is equipped with a 32-bit RISC-V single-core processor running at 240 MHz along with 384 KB […]

Waveshare has recently launched the Pico-DALI2 expansion module for ESP32-Pico series boards designed to enable DALI communication for customized control of multiple lighting groups. It is compatible with development boards such as the ESP32-C6-Pico and ESP32-S3-Pico and includes a DALI communication screw terminal for connecting external DALI devices. DALI (Digital Addressable Lighting Interface) is a standardized protocol used for lighting control in building automation systems. The latest version of the DALI2 protocol is better than the old one in that it offers enhanced interoperability, additional features like multi-master configurations, and better energy management capabilities. DALI2 devices can communicate bidirectionally, meaning controllers can send commands and also receive status feedback from lighting devices, allowing for more complex automation and diagnostics. We can get more information about DALI from Wikipedia. We have previously seen the uses of DALI in Texas Instruments MSPM0 Arm Cortex-M0+ microcontrollers as an interface and in Acme CM3-Home [...]

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Spectra is a JavaScript-based hackable smartwatch based on the ESP32-S3 WiFi and Bluetooth microcontroller that aims to offer the quality of high-end consumer smartwatches with the repairability of a maker-targeted device. The Spectra smartwatch combines the ESP32-S3 microcontroller with a Nordic Semi nRF52832 co-processor to optimize the battery life. The ESP32-S3 is maxed out with 8MB of RAM and 32MB of external flash memory, and the microSD card slot in the watch supports up to a 512GB memory card. It shares a similar concept with the Bangle.js and the Bangle.js 2 customizable smartwatches. According to the maker, Spectra is not bound to be fully open-source, since the project uses “external proprietary code [they] aren’t allowed to share.” They plan to publish Arduino libraries and hardware design files, but there is no live GitHub repository yet. Other hackable smartwatches include the TinyWatch S3, the ZSWatch, and the Sensor Watch Pro. Spectra [...]

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The “XIAO ESP32S3 for Meshtastic & LoRa” is an ESP32-S3 LoRa dev kit that combines an XIAO ESP32S3 board with the tiny Wio-SX1262 LoRa module connected through a board-to-board connector. This compact devkit supports LoRa (862-930MHz), Wi-Fi (2.4GHz), and Bluetooth 5.0 (BLE), with a 5km range for LoRa and a 100m+ range for Wi-Fi/BLE. The kit also has a USB Type-C interface, a built-in power management chip, and multiple I/O options such as IIC, UART, and GPIO. It supports external LoRa antennas and can be extended with XIAO expansion boards for more complex setups. These features make this device suitable for projects such as LoRaWAN gateways, IoT sensors, Meshtastic nodes or routers, and applications where space is limited. XIAO ESP32S3 for Meshtastic & LoRa specifications: SoC – Espressif Systems ESP32 with dual-core Xtensa LX7 microcontroller up to 240MHz Wireless Connectivity LoRaWAN via  Semtech LX1262 Output Power – Up to +22 [...]

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The Kumquat is an Allwinner V3s board designed for industrial automation, home automation, IoT projects, robotics, and embedded system development. The Allwinner V3s features ARM Cortex-A7 cores with 64MB DDR2 RAM and 8MB SPI flash storage. Connectivity options include Ethernet, USB-C, isolated CAN-FD, and WiFi/Bluetooth via an ESP32 module. Additionally, it has eight auto-detecting 12/24V IOs, four relays for controlling external devices, and a real-time clock with battery backup. The Kumquat runs on Buildroot Linux with a mainline kernel and can be programmed with various programming languages making it a great alternative to traditional PLCs. Kumquat board specification SoC – Allwinner V3s  CPU – ARM Cortex-A7 @ up to 1.2 GHz Memory – Integrated 64MB DDR2 DRAM clocked at 400MHz @ 1.5 V Video engine Storage 8MB SPI Flash for bootloader and user code I2C EEPROM for MAC addresses and user data SDIO Connector for eMMC or SD card Connectivity [...]

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