RainbowLink-V2 compact USB-to-serial converter features 12V output, dual TTL, isolated RS-485 and RS-232 interfaces

RainbowLink v2 USB-to-serial converter

DFRobot’s RainbowLink-V2 USB-to-serial converter features four independent channels, namely one isolated RS-485, one isolated RS-232, and two TTL interfaces usable simultaneously. The compact tool also converts 5V provided from the host’s USB interface to 12V/800mA, 5V/2A, and 3.3V/200mA outputs, eliminating the need for a separate power adapter. RainbowLink-V2 (TEL0190) specifications: USB – 1x USB Type-C port for power and adata Serial 2x TTL (3.3V) via headers 1x fully isolated RS485 channel via lever terminal 1x fully isolated RS232 channel via lever terminal Baud Rate – 2400 to 128000 bps Misc 3x Power LEDs for 3.3V, 5V, and 12V 4x Link LEDs for TTL 1/2, RS232, and RS485 12AWG – 22AWG wires supported on lever-type spring terminals Built-in short-circuit protection and overcurrent protection (but users are still recommended to avoid short-circuiting to prevent damage) Input voltage – 5V via USB-C port Output voltage 3.3V up to 200mA via header 5V up […]

DFRobot launches low-power, low-cost Fermion: BMV080 air quality sensor module

Fermion BMV080 Fanless Air Quality Sensor (PM1, PM2.5, and PM10)

Just last year, we reported on the SparkFun Air Quality PM1/PM2.5/PM10 Sensor, based on the Bosch BMV080 fanless air-quality sensor and priced at around $65. DFRobot has now launched a low-cost alternative, the Fermion: BMV080, which provides the same fanless, laboratory-grade PM1, PM2.5, and PM10 sensing capabilities for just $29.90. The sensor uses laser-based light-scattering technology with fanless optical counting to detect particles as small as 0.5 μm. This avoids fan noise, dust buildup, and mechanical wear, which are common with fan-based PM sensors, and, on top of that, it has a service life of up to 10 years. It measures particulate concentrations in a 0–1000 μg/m³ range with 1 μg/m³ resolution and ±10 μg/m³ of accuracy. The sensor supports I2C and SPI interfaces, and consumes about 70 mA in continuous measurement mode with a 6 μA sleep current, making it suitable for battery-powered systems. DFRobot’s Fermion: BMV080 specifications: Sensor IC […]

DFRobot HUSKYLENS 2 AI camera review – From built-in AI samples to training a custom model to detect elephants

Huskylens 2 Ai camera review

Hello, today I am going to review the HUSKYLENS 2, released in October 2025. It is the next generation of HUSKYLENS, an AI vision sensor equipped with a Kendryte K230 dual-core RISC-V SoC with a 6 TOPS AI accelerator and a 2.4-inch IPS touchscreen. The device runs machine vision algorithms fully on-device, providing fast and low-latency performance, and includes more than 15 built-in AI models. HUSKYLENS 2 also supports deploying custom-trained models, including integration with Large Language Models (LLMs) via a Model Context Protocol (MCP) service. In addition, it is compatible with various microcontrollers, such as Arduino and Raspberry Pi, through UART or I2C communication interfaces. HUSKYLENS 2 unboxing The manufacturer sent the HUSKYLENS 2 module and the Microscope Lens separately. Both parcels were shipped from Chengdu, China, and arrived at my office in Chanthaburi, Thailand, in about one week. The parcels were packed in standard cardboard boxes and arrived […]

DIN-rail mountable LoRaWAN control terminal offers RS485, analog input, and digital I/Os

DFRobot LoRaWAN Control Terminal

The DFRobot LoRaWAN Control Terminal is a compact, DIN-rail mountable industrial IIoT terminal that features long-range LoRaWAN connectivity with local sensing and control capabilities. It’s designed for industrial, agricultural, and building-automation scenarios that need reliable, low-power wireless communication up to 4 km. The terminal supports the standard LoRaWAN protocol (OTAA/ABP, Class A/C) with up to 4 km line-of-sight range and works with private gateways or public networks like TTN. It integrates a 0–10V analog input, optically isolated digital inputs, and RS485/Modbus sensor support, along with a built-in relay output for direct actuation. There’s also support for visual rule-based automation for relay switching, RS-485 commands, or uplink messages; the device continues operating offline using preset logic. The unit operates from 12–24V, includes adjustable transmission parameters, and supports firmware upgrades and factory resets. DFRobot LoRaWAN Control Terminal specifications: SoC/Main Controller – TBD Wireless LoRaWAN 863–870 MHz, 16 dBm Tx power (EU, DFR1120-868) LoRaWAN […]

LattePanda IOTA review – An Intel N150 + RP2040 SBC tested with Windows 11, UPS expansion, PoE, NVMe SSD, and more

lattepanda iota review

I’ve received a review sample of the LattePanda IOTA single-board computer (SBC) from DFRobot. It is a compact, palm-sized SBC powered by an Intel Processor N150 quad-core Twin Lake CPU, and featuring 8 GB of LPDDR5 RAM and 64 GB of onboard eMMC storage. It also integrates a Raspberry Pi RP2040 co-processor for handling I/O operations, providing greater flexibility for embedded and automation applications. LattePanda IOTA unboxing The parcel was shipped from China and arrived safely in a standard cardboard box. Inside were several smaller boxes containing the following components, with foam padding that was slightly loose but still provided adequate protection. All components arrived in good condition. I received a total of seven items from DFRobot, which are listed below. LattePanda IOTA (8GB RAM, 64GB eMMC flash) Smart UPS Expansion Board: A plug-and-play UPS module for the LattePanda IOTA that provides stable, continuous power with intelligent management and supports […]

HUSKYLENS 2 – A 6 TOPS LLM and AI vision camera with self-learning capabilities

Huskylens 2 6 TOPS Edge AI camera

DFRobot HUSKYLENS 2 is an LLM and AI vision camera powered by a Kendryte K230 dual-core RISC-V SoC with a 6 TOPS AI accelerator and designed to be easy-to-use for makers, educators, competition teams, and AI enthusiasts. It provides an upgrade to the HUSKYLENS AI camera introduced in 2019 with the Kendryte K210 SoC. It features 1GB of LPDDR4, an 8GB eMMC flash, a microSD card slot, a 2MP camera sensor, a 4-pin Gravity expansion connector, and a USB-C port for power and programming. The company says the HUSKYLEN 2 comes preloaded with over 20 AI models, including object tracking, hand recognition, and instance segmentation, but users can also train and deploy their own AI models using features like the self-learning classifier. HUSLYLENSE 2 specifications: SoC – Kendryte K230 CPU 64-bit RISC-V processor @ 1.6GHz with RVV 1.0 support 64-bit RISC-V processor @ 800MHz AI accelerator – Up to 6 […]

LattePanda IOTA SBC combines Intel N150 SoC with Raspberry Pi RP2040 for GPIO and power control

LattePanda IOTA

LattePanda IOTA is a new Intel Processor N150 SBC equipped with up to 16GB LPDDR5 and 128GB eMMC flash, as well as a Raspberry Pi RP2040 microcontroller for GPIO and power control It’s an update to the LattePanda V1 launched in 2015 with an Intel Atom x5-Z8300/Z8350 Cherry Trail SoC and an ATMega32U4 microcontroller. The new model is up to eight times faster, features up to four times the memory, twice the storage, Gigabit Ethernet, and more, but mostly keeps the same dimensions and layout for compatibility with most accessories. It also adds new features such as a 16-pin PCIe connector, ECC memory, Wake-on-LAN, and more… LattePanda IOTA specifications: SoC – Intel Processor N150 Quad-core “Twin Lake” processor @ up to 3.6 GHz (Turbo) with 6MB cache GPU – 24EU Intel UHD graphics @ 1000 MHz TDP: 6W to 15W (Configurable in BIOS/UEFI) Memory – 8GB or 16GB LPDDR5 4800MT/s […]

80 GHz mmWave liquid level detection sensor supports ModBus, offers 40m range

80GHz mmWave Liquid Level Detection Sensor

I’ve just come across a no-name non-contact, high-precision 80 GHz mmWave radar sensor for liquid level detection with a 40m range, ±5mm accuracy, and Modbus communication over UART. We had seen 24 GHz and 60 GHz mmWave sensors mostly for precise motion detection, but it’s the first time I’ve seen an 80 GHz mmWave sensor, or more exactly, 79 GHz. It operates on the same principle of Frequency Modulated Continuous Wave (FMCW) radar as most other mmWave sensors and connects to an Arduino or other board over UART. It targets applications such as smart water management, industrial process control, and environmental disaster prevention/monitoring. Specifications: MCU – GigaDevice GD32F405 Arm Cortex-M4F microcontroller @ 168 MHz with 192KB SRAM, 3MB flash, 1MB code-flash Transmit frequency – 77–81 GHz (79 GHz mid frequency), 4 GHz bandwidth Output power (EIRP) – 13 to 20dBm Beamwidth (-3dB) Horizontal ±25°, Vertical ±25° With external lens: Horizontal […]

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