本次给大家带来的是用数字电路CD4069制作的万能遥控轻触开关，其功耗微小，约5mW,可广泛应用于家庭、宾馆等。 电路工作原理：红外线接收头接收到遥控器发射来的红外线信号，其输出脚输出低电平，经C5、R9、C6耦合至ICd组成的放大器放大，D12检波，ICC整形后 ...

ESP32 modules often have “integrated antennas” printed on the PCBs. But, at times, you might need improved Wi-Fi range. A solution can be an external antenna, but not every module has a socket for ...

Engineer and YouTuber Carl Bugeja recently developed CodeCell, a tiny ESP32-C3 development board designed as the brain for robots, wearables, and smart home devices. This module features a nine-axis ...

图中左边为交流电检测部分，右边为音频振荡器，平时开关S闭合。220 V交流电经二极管VDl半波整流、C1滤波得到约300 V的直流电压：一路经R1限流供指示灯l,EDl发光；另一路经R2降压(或限流)送至光电耦合器的(1)脚，使内部发光二极管点亮,受光三极管导通，其集电极 ...

The Individual Identification Card Application is an official document. Providing false information and/or failing to disclose all required information is grounds for denial of a Maine Adult Use ...

Supports various IO expander chips. Supports controlling individual IO pin (using pinMode(), digitalRead(), and digitalWrite() functions). Supports controlling multiple IO pins simultaneously.

Analogwrite to RGB LED on Nano ESP32 does not turn off completely Status: Community help needed Issue need help from any member from the Community. Type: 3rd party Boards ...