NXP Semiconductors has recently introduced Trimension SR250 UWB radar, which NXP is calling the industry’s first single-chip solution that combines on-chip processing with short-range ultra-wideband (UWB) radar and secure UWB ranging. Operating at 6-8.5 GHz, the SR250 supports features like 3D angle-of-arrival (AoA), time difference of arrival (TDOA), and time of flight (ToF) measurements accurate to within ±5 cm. The integrated on-chip radar processing reduces power consumption, which increases efficiency and it can work with AI/ML algorithms on host processors like NXP’s i.MX, RW61x, and MCX families. The SR250 is supported by firmware, middleware, and sample applications, simplifying development and deployment. Applications for this device include smart home automation (e.g., turning devices on/off based on presence), secure access, and safety monitoring, as well as industrial uses such as worker tracking, collision avoidance, and danger zone detection. Trimension SR250 UWB radar specification 3D secure ranging Fully interoperable with IEEE 802.15.4z HRP [...]

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SparkFun has released a new air quality multi-sensor board, the Indoor Air Quality Combo Sensor, which integrates the SCD41 and SEN55 sensors from Sensirion for measuring carbon dioxide, volatile organic compounds (VOCs), particulate matter, relative humidity, and temperature. The air quality multi-sensor board simplifies power management for the two sensors via onboard DC voltage conversion and allows a single Qwiic connection for power and communication. It features two Qwiic connectors and a 0.1”-space through-hole header for I2C and power. The board is not a complete solution for indoor air quality monitoring. It has to be connected to a Qwiic-enabled microcontroller such as SparkFun Thing Plus Matter, DataLogger IoT, and the ESP32 Qwiic Pro Mini. Users can install the required Arduino libraries — the Arduino Core library, Sensirion I2C SEN5x, and SparkFun SCD4x — either via the Arduino library manager or directly from SparkFun. The device is open-source, with hardware files, [...]

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