Generating parameters with MatlabOpen your matlab and type fdatool, and click “Analysis->Filter Coefficients“.Click “Design Filter“ and get filter ...
如何把你的4G变成你家的WiFi
前言在流量多如牛毛的今天，某宝随意开个19块钱就能100G流量的今天，装个宽带居然还要个100+ RMB。我们穷苦的孩子用不起高大上的宽带，现在搞个4G改WiFi还是可行的。 硬件准备 带USB口的路由器，能刷固件（最好是OpenWrt） USB接口的车载4G Dongle, 如华为的e8278s- ...
Add rc.local Service for Ubuntu 18.04
Modify /lib/systemd/system/rc-local.serviceAppend some content:[Unit]Description=/etc/rc.local CompatibilityDocumentation=man:systemd-rc-local-generat ...
ESP32 Configure WiFi and Control LED Frequency and duty via WebSever
Video If you can’t open this Youtube link, please click this.
Setup a SoftAP with Raspberry Pi
Install hostapd and dnsmasqsudo apt install hostapd dnsmasq ConfigurationEdit dhcpcd.confEdit /etc/dhcpcd.conf and append a new line: denyinterfaces w ...
MQTT Client for ESP32
Requirements Publish a message from ESP32 Subscribe a topic SoftwareDownload MQTT Client Opensource CodeClone source code from https://github.com/kno ...
How to Remote Control LED via BLE of ESP32
Requirements Turn on/off LED via Bluetooth Software#include <BLEDevice.h>#include <BLEServer.h>#include <BLEUtils.h>#include <BL ...
Install and Test MQTT Client C Library in Raspberry Pi
Install MQTT Client C Libraryapt updateapt install cmake libssl-devgit clone https://github.com/eclipse/paho.mqtt.c.gitcd paho.mqtt.cgit checkout v1.2 ...
How to setup your private MQTT server
Install MQTT Software Packageapt updateapt install mosquitto Configure and Start MQTT ServiceEdit /etc/mosquitto/mosquitto.conf, and append the follow ...
Configure your Wifi Information via WebServer
Requirments Start a WebServer with ESP32 Control LED by browser Input your Wifi information by browser and enable connect SPIFFS filesYou can downloa ...