For every beginner in microcontrollers, the first program is almost always to light up an LED, which is as classic as the “hello world” in software engineering. It’s simple but filled with many memories. I still remember the experience of learning about microcontrollers. Back then, a classic 8051 microcontroller like the AT89C52 cost about 8 … Read more
Produced by 21ic Forum Xiao Ye San Qian Website: bbs.21ic.com We usually use adjustable power supplies, which typically display two values: the current voltage set and the current flowing through the device. Below, I will introduce how to make a meter that can display both voltage and current values using the INA226 power chip. 1. … Read more
This article covers the following content: Entering AT mode for basic Bluetooth parameter settings Arduino Bluetooth control LED circuit design and code writing Testing functionality using Android Bluetooth serial debugging software Entering AT Mode for Basic Bluetooth Parameter Settings To use the Bluetooth module with Arduino, you first need to configure the basic parameters of … Read more
Scientific discoveries often begin with unexpected small events, and the discovery of OLED is no exception. One night in 1979, Dr. Qinyun Deng, a Chinese scientist working at Kodak, suddenly remembered he had left something in the laboratory while on his way home. When he returned to the lab, he found an organic battery used … Read more
1. Module Source>>> Module Physical Display: Data Download Link: https://pan.baidu.com/s/1U9r32qeS2jOANB0SNwtwnw Data Extraction Code: 8888 2. Specifications>>> Refer to manufacturer documentation for the following information: Operating Voltage: 3.3V Operating Current: 15MA Module Size: 27.3 x 27.8 MM Pixel Size: 128(H) x 64(V) RGB Driver Chip: SSD1306 Communication Protocol: SPI Pin Count: 7 Pins (2.54mm pitch header) … Read more
“A detailed explanation of the Serial Peripheral Interface and its communication applications with memory, displays, Wi-Fi modules, and SD cards.” In a previous article, I explored the astonishing convenience of interfacing modern OLED displays with bare-metal microcontrollers. My point is simple: in most embedded applications, using a complete Linux SoC platform (like Raspberry Pi) is … Read more
It is predicted that this year, Samsung Electronics will reduce the proportion of LCD TV panels procured from CSOT. This is due to CSOT’s acquisition of LG Display’s Guangzhou LCD factory, which has strengthened its influence in the LCD panel market. Conversely, LG Electronics is expected to increase its procurement of LCD TV panels from … Read more
LCD (Liquid Crystal Display): Backlight source emits light + liquid crystal color rendering, with the backlight source now using LED lights. QD-LCD (Quantum Dot TV): The screen of a typical LCD TV uses an LED backlight that emits blue light, which is converted into red, green, and blue light through phosphors, ultimately forming white light, … Read more
Do your eyes feel sore and uncomfortable after looking at your phone for a long time? Did you know that different models of mobile phones have different principles of screen illumination? Choosing a suitable mobile phone screen can more effectively protect your eyes. As smartphones continue to evolve, the technology behind smartphone screens is also … Read more