In IoT (Internet of Things) scenarios, sensors are ubiquitous and an indispensable part of the IoT. The first thermostat was introduced in the late 1880s, and infrared sensors began appearing in the late 1940s. IoT and its corresponding Industrial IoT (IIoT) are taking the use of sensors to a new level. Broadly speaking, sensors are … Read more
Arduino Smart Alarm Clock Design (8×8 Matrix Keypad + LCD Display + Buzzer Songs) Author: STCode 1. Effect Description: This design is based on the Arduino Nano controller, with the main functions being a timer alarm and environmental temperature and humidity display. Users can set the alarm hour and minute using the 8×8 matrix keypad, … Read more
Click the above Front-End Q, follow the public account ReplyJoin Group, join the Front-End Q technical exchange group About the text, Author: Dreyas Link: https://juejin.cn/post/7203180003471081531 image-20230104162825029 The above image is an online temperature and humidity visualization project I worked on for a week. It shows the temperature and humidity trends for the previous day and … Read more
Compared to instruments like trumpets and flutes, electronic keyboards are easier to understand and operate. If we use a USB keyboard as the instrument keys, we can create the simplest keyboard instrument. To achieve this goal, we need to solve two problems: sound generation and parsing USB keyboard data. ·Sound Generation First, we need a … Read more
Overview Previously, I wrote a tutorial on building a temperature and humidity monitor with 20 lines of code, and I also promised to write a tutorial without any coding. After a long delay, I finally finished it. Some content is excerpted from the Baidu Cloud IoT Platform documentation. Development Board NodeMCU is an open-source development … Read more