FastLED is an Arduino library for efficiently controlling various LED strips, renowned for its ease of use, high performance, and broad compatibility. Whether you are a beginner or an experienced user, FastLED helps you easily achieve stunning lighting effects. This article will delve into the features, usage methods, and some advanced techniques of the FastLED … Read more
▍Introduction While daydreaming in my chair, I suddenly noticed that the desk calendar was still stuck on the previous month. In this digital age, physical calendars seem to be unable to keep up with our fast-paced lives, as we rely more on our phones and computers to remind us of meetings, travels, and appointments. The … Read more
Introduction Recently, Professor Luis Echegoyen and colleagues from the University of Texas at El Paso reported two covalent organic frameworks (COFs) based on Co(II)-porphyrin/[2,1,3]-benzothiadiazole (BTD), Co@rhm-PorBTD and Co@sql-PorBTD, and utilized them for O2 electrocatalytic reduction (ORR). The results show that both COFs exhibit 5.8 times (Co@rhm-PorBTD) and 1.3 times (Co@sql-PorBTD) higher mass activity than commercial … Read more
First Author: Yang Yang, Chen Ruihao Corresponding Author: Wang Hongqiang, Chen Ruihao Affiliation: Northwestern Polytechnical University Research Highlights: 1. In situ generated fluoride 1D “patch layer” at grain boundaries to enhance the moisture resistance of polycrystalline films and passivate defects; 2. F···H hydrogen bonds accelerate charge extraction and transfer, and stabilize ions to improve the … Read more
* Professor Xu Lin from Jilin University leads a research team addressing the current deficiencies in flexible electronic devices in simulating skin’s three-dimensional structure and synchronously encoding multi-stimuli information capabilities. They have developed an artificial epidermis alarm system based on a three-dimensional conductive MOF network that can recognize risk factors for asthma attacks. By in-situ … Read more
First Author: Qingqing Zhou Corresponding Authors: Jong Seung Kim, Lin Xu Affiliations: Korea University, Jilin University DOI: 10.1007/s40820-024-01548-5 Background Introduction Wearable electronic products characterized by intelligence have shown amazing potential in remote healthcare and human-machine interaction (HMI). This immense potential stems from breakthrough advances in sensory and artificial intelligence technologies. One key application of wearable … Read more
Introduction In IoT applications, battery-powered devices often need to communicate with MQTT servers, but the high power consumption of WiFi connections can severely affect battery life. The ESPNow2Mqtt library was born to address this issue, utilizing ESP-Now technology to complete MQTT communication within 100 milliseconds, achieving low power consumption and efficient IoT data transmission. Architecture … Read more
Introduction With the development of society, air pollution poses a serious threat to human health and the ecological environment. Electrospun nanofibers have advantages such as small diameter, high specific surface area, and high porosity, showing potential applications in air filtration. However, existing electrospun membranes (ENMs) mostly face a trade-off between removal efficiency and pressure drop, … Read more
“ This article will run the FreeRTOS operating system on ESP32 and send MQTT messages to the AWS IoT Core platform.” FreeRTOS is commonly used in Cortex M3/M4 core microcontrollers and simplifies embedded device development, avoiding the need to write complex bare-metal pure C code directly, as well as simplifying the differences between different microcontrollers … Read more
1. Introduction The BearPi-HM Nano development board is a fully functional, easy-to-use development board specifically designed for HarmonyOS, suitable for developing applications based on HarmonyOS. It features onboard NFC circuitry and a standard E53 interface, which can be expanded to connect smart humidifiers, smart lamps, smart security systems, smart smoke detectors, and more. The main … Read more