Firmware Arduino IDE / C++ Embedded control logic, sensor/actuator interfacing, hardware control, and serial data transmission. Communication Eclipse Mosquitto MQTT Lightweight publish/subscribe ...

‘qSafe’ AIoT-Powered Quality, Safety and Predictive Maintenance Platform for Indian SME Manufacturing with ERP (SAP) integration and Automation., qSafe is designed as the only AIoT device targeting a ...

We all dread the moment our monthly electricity bill arrives. It’s often a shock—a single, confusing number with zero explanation of where that energy went. Was it the air conditioner running too long ...

但要注意，Arduino框架在ESP8285上默认跑的是裸机加软定时器的调度模型，不适合做复杂任务。 我的代码结构是用 loop () 做非阻塞状态机，将WiFi连接、MQTT保活、数据上报、PWM控制分成几个小状态机，每个循环周期处理一次，这样避免了阻塞问题。

很多新手用Arduino Uno跑PID，代码逻辑没问题，但实测控制周期抖动高达±8ms。 查原因才发现： analogRead () 函数阻塞4.1ms， Serial.print () 又占3.2ms，留给PID计算的时间只剩不到2ms。 而舵机响应延迟120ms，看似宽松，但PID采样周期若超过20ms，相位滞后直接让系统失稳。