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August 26, 2024

Renesas RRH62000 multi-sensor indoor air quality monitoring module features particle, VOC, and gas sensors

Renesas Electronics has introduced the RRH62000, a compact multi-sensor module for indoor air quality monitoring. It integrates particle detection, VOC, and gas sensing with an onboard Renesas MCU for sensor management. The module is designed for use in air purifiers, smoke detectors, HVAC systems, weather stations, and smart home devices. The RRH62000 is an integrated sensor module that measures key air quality parameters, including particulate matter (PM1, PM2.5, PM10), total volatile organic compounds (TVOC), Indoor Air Quality Index (IAQ), estimated carbon dioxide (eCO2), temperature (T), and relative humidity (RH). These measurements are combined into a single package, with digital outputs available for each sensor, enabling simultaneous measurement. The module features a six-pin connector for easy plug-and-play integration. The RRH62000 is available with the RRH62000-EVK evaluation kit, which simplifies the testing of the integrated sensor module. The module measures critical air quality parameters and connects to a Windows PC via USB. […]

August 13, 2024August 13, 2024

LILYGO T-TWR REV2.1 is an ESP32 walkie-talkie board with display, GNSS, and SA868 module

LILYGO has recently introduced an updated version of their T-TWR ESP32 walkie-talkie development board, the T-TWR REV2.1. This new board not only features Wi-Fi and Bluetooth but also has a GPS module for added functionality. Additionally, it has a new RF front-end matching circuit that can be configured to work with both VHF and UHF frequencies. The board is very versatile and can be programmed with Arduino IDE for various applications. The main difference between the older T-TWR and the newer T-TWR REV2.1 is that the new module has better power management with the AXP2102 single-cell Li-battery PWM charger, allowing it to use USB, a 21700 battery, or an 18650 battery, while the original T-TWR only supports USB and an 18650 battery. The new version also includes a GNSS module along with a microphone-switching matrix and a speaker-switching matrix for better sound quality. Additionally, the REV2.1 has the Push-To-Talk button […]

LILYGO T-QTC6 – An ESP32-C6 IoT controller with a 0.85-inch touchscreen LCD

LILYGO T-QTC6 is a cute little IoT controller based on an ESP32-C6 WiFi 6, Bluetooth 5.4 LE, and 802.15.4 wireless microcontroller and a 0.85-inch touchscreen color LCD that can be powered via USB-C or a LiPo battery with the board also supporting charging. The device, sometimes called “T-QT C6” (with a space), also comes with an 8-pin female connector with five GPIOs and a Qwiic connector for UART modules. It’s another addition to the T-QT family with ESP32 wireless microcontrollers and a tiny 0.85-inch display such as the T-QT Pro or the T-QT V1.1. But note that those are development boards, while the T-QTC6 feels more like a complete device. LILYGO T-QTC6 specifications: Wireless Module – Espressif Systems ESP32-C6-MINI-1U SoC – ESP32-C6-FH4 32-bit RISC-V microprocessor up to 160 MHz with 320KB ROM, 512KB HP SRAM, 16KB LP SRAM, 4MB flash Memory – 4MB PSRAM (TBC) Wireless 2.4 GHz WiFi 6 […]

August 7, 2024

Makerfabs SenseLora 4G gateway supports LTE Cat 1 and WiFi 4 connectivity, features solar battery charger

The Makerfabs SenseLora 4G Gateway is a device that collects data from LoRa sensors (like temperature and humidity sensors) and sends that data over a 4G network to a cloud service or directly to your phone via SMS, this is ideal for applications where installing a LoRaWAN device is unnecessary or expensive. The application for this gateway includes monitoring soil humidity in your backyard or greenhouse conditions on your farm. Previously we have written about similar smart agriculture sensors including AgroSense LoRaWAN sensors and WisGate Soho Pro RAK7267 LoRaWAN gateway feel free to check those out if you are looking for LoRa-based agricultural products. Makerfabs SenseLora 4G gateway specifications SoC – Espressif ESP32-S3R8 CPU – Dual-core Tensilica LX7 microcontroller up to 240 MHz with vector instructions for AI acceleration Memory – 8MB PSRAM Wireless – WiFi 4 and Bluetooth 5.0 LE + Mesh connectivity LPWAN connectivity LoRaWAN SX1276 LoRa module Frequencies 868 […]

ESP32-2424S012 round display full enclosure

August 6, 2024August 5, 2024

Arduino and LVGL-compatible ESP32-C3 board features a 1.28-inch round touchscreen display fully housed in a case

The ESP32-2424S012 is an ESP32-C3 WiFi and BLE development board with a 1.28-inch round touchscreen color display that is fully housed in a black or white plastic enclosure and suitable for Arduino and LVGL library. As we’ll see further below some have also used it with Tasmota and ESPHome firmware. We previously covered several tiny ESP32-S3/ESP32-C3 boards with a round display such as the LILYGO T-RGB ESP32-S3 board, Makerfabs “ESP32-S3 Round SPI TFT with Touch 1.28″, SB Components’ Dual Roundy, but they either don’t come with a case at all, or only the front is covered, but the bottom is laid bare. The ESP32-2424S012 is quite similar, but it can be purchased with a case that covers both the front and back with some openings for expansion connectors. ESP32-2424S012 board specifications: Wireless module – Espressif Systems ESP32-C3-MINI-1U module SoC – ESP32-C3 RISC-V microcontroller @ 160 MHz with 400 KB SRAM, 2.4 […]

ST EVLDRIVE101 HPD 750W Brushless DC motors Driver

July 31, 2024July 30, 2024

STMicro EVLDRIVE101-HPD 1.9-inch motor driver board can drive 750W BLDC motors

STMicroelectronics has recently revealed the reference design for “EVLDRIVE101-HPD” their homegrown BLDC motor driver board that can drive up to a 750W BLDC motor. This compact 50 mm (1.9-inch) circular PCB combines STDRIVE101 3-phase, triple half-bridge gate-driver IC with an STM32G0 microcontroller, which is responsible for driving three-phase brushless motors. The driver board supports various motor-control strategies, including trapezoidal and field-oriented control (FOC), with both sensor’ed and sensorless rotor-position detection. Additionally, it has a wide operating voltage range of 5.5V to 75V and includes STL220N6F7 60V STripFET F7 MOSFETs, which have very low Rds(on) for high efficiency. Other features of the board include ultra-low power consumption in sleep mode, a single-wire debug interface, direct firmware update capability, and protection mechanisms such as under-voltage lockout, overtemperature protection, and cross-conduction prevention. All these features make this board suitable for applications like hairdryers, handheld vacuums, power tools, fans, drones, robots, and industrial equipment […]

Blette Stick Bluetooth LE offgrid communication

July 20, 2024July 23, 2024

The Blette Stick relies on Bluetooth 5.0 LE for off-grid messaging with up to 1.1km range

The Blette Stick is a Bluetooth 5.0 LE USB-C dongle designed to be attached to an Android smartphone in order to provide off-grid messaging and GPS coordinates sharing capabilities with a range of up to 1.1km in case WiFi and cellular networks are down. CNX Software readers may also be familiar with Meshtastic devices relying on WiFi to connect to the smartphone with Bluetooth and to other nodes using LoRaWAN to enable off-grid messaging while trekking or during emergencies. The Blettle Stick does something similar to the Meshtastic project but with Bluetooth LE long-range communication instead of Bluetooth+LoRaWAN. While the range will be shorter and limited to around 1km (line-of-sight), the plug-and-play design will make it easier to use for typical users who are not technically savvy. Blettle Stick specifications: SoC – Nordic Semi nRF52 Bluetooth 5.0 LE microcontroller (exact part number not specified, possibly nRF52840) Wireless – Bluetooth 5.0 […]

July 19, 2024July 19, 2024

Femtosense introduces the AI-ADAM-100 system-in-package for affordable, efficient AI-based voice processing on the edge

Femtosense’s newest release, the AI-ADAM-100, combines a low-power Arm Cortex M0+ microcontroller from ABOV Semiconductor with the Femtosense Sparse Processing Unit (SPU), an in-house neural processing unit. This combination powers AI voice processing and cleanup capabilities on edge devices. It leverages sparsity techniques to ensure that models can run on edge devices without intensive processing. Sparsity in AI refers to the presence of zeroes or non-zero values in the matrices and tensors used in machine learning models. No computation is required for these zero weights, heavily reducing processing requirements. The Femtosense AI-ADAM-100 aims to bring voice control to various devices such as home appliances, hearing aids, industrial headsets, and consumer earbuds. These appliances can implement voice user interfaces that allow users to talk naturally in their own words. On-device voice cleanup functionality would reduce infrastructure costs and improve the accuracy of the data sent to the cloud. The Femtosense SiP […]