Build an ESP32 datalogger that also hosts a web server so that you can access and download the data remotely using a web server. The ESP32 will log data to a file hosted on a microSD card.
This post shows how to create a temperature Arduino data logger. We’ll use the DHT11, a real time clock (RTC) module to take time stamps and the SD card module
SD card datalogger This example shows how to log data from three analog sensors to an SD card mounted on the Yún101/YunShield/Yún using the Bridge library. The circuit: * analog sensors on analog pins 0, 1 and 2 * SD card attached to SD card slot of the Yún101/YunShield/Yún Pr...
server.begin(); } [Get Code] 在loop()里,你创建一个云客户端的例子来管理连接。如果客户端连接上了,用custom函数(如下所示)处理请求,并且当结束时关闭连接。 把一个延时放在loop()的后面很有帮助,可以防止中央处理器做太多工作。 void loop() { YunClient client = server.accept(); if (client) { pr...
system has been obtained an air flow of 3.4375 10~(-2) m~3/J using a anemometer respect to electrical energy supplied by fans, giving 9.4818 W of average power using ceramics resistances, and testing an adaptive controller where its variables are fitted using equations obtained from data ...
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_logger.LogError($"Error in MQTT connection: {ex.Message}"); } } } publicclassMqttService {privateIMqttClient _mqttClient;privatestring_brokerAddress ="";//设置EMQX服务器地址privateint_brokerPort =1883;//默认MQTT端口privatereadonlySemaphoreSlim _mqttLock =newSemaphoreSlim(1,1);//线程锁publicMq...
Arduino - Web Server Multiple Pages Arduino - Web Server Password Arduino - WebSocket Arduino - Web Plotter Arduino - Controls Servo Motor via Web Arduino - Controls Car via Web Arduino - IFTTT Arduino - Make Voice Phone Call Arduino - Send SMS Message ...
Arduino DHT22(DHT11)温湿度感应器 一,接线 DHT22(DHT11)有3个引脚,有些有四个,其中一个悬空.VCC,DATA,GND。以下图是esp8266接线图。 VCC-> 3V GND-“G DATA-> D4 二,下载DHT库 DHT:HTTPS://github.com/adafruit/DHT-s... 查看原文 树莓派驱动DHT22 树莓派-DHT22测量湿度 一般的温湿度传感器有...
Datalogger: 在SD卡上保存传感器信息。 File Write Script: 示范怎样在Process上写入和执行外壳脚本。 HTTP Client: 建造一个简单的客户端,可以下载网页并且打印到串口监视器。 HTTP Client Console: 建造一个简单的客户端,可以下载网页并且用控制台通过WIFI打印到串口监视器。