Humidity and temperature sensor node reference design enables sensor-to-cloud networks

This Texas Instruments reference design demonstrates how to create an industrial sensor-to-cloud end node capable of connecting to an IoT network gateway and a cloud data provider. This sensor node reference design uses the company's nano-power system timer for power gating, low Iq boost converter, SimpleLinkultra-low-power sub-1GHz wireless microcontroller (MCU) platform and humidity sensing technologies to demonstrate an ultra-low-power method to duty-cycle sensor end-nodes, leading to longer battery life. The features include large network-to-cloud connectivity enabling long range, up to 1 km (line of sight); IEEE 802.15.4e/g standards-based sub-1GHz solution with TI 15.4-stack; configurable system wake-up interval; low standby current of 1µA; ±2% relative humidity accuracy; and ±0.2C temperature accuracy.