In new version of RaspberryPi OS, when u install mySql it installs MariaBD.
When I first time installed mysql-server (apt-get install). I did not get prompted for a password. It just says that it is setting user password for mysql and soon there after it looks as if it is done – no protests.
Continue reading Raspberry Pi mySql can not login as root with password
In this tutorial we are making ESP8266 NodeMCU as TCP Socket Server for bidirectional communication. Before we start directly on Socket programming let’s have some understanding of what is TCP Socket.
Continue reading ESP8266 NodeMCU TCP Socket Server Arduino Example
In this tutorial we are making ESP32 as both Station and Access point and web server. We have seen how to connect to WiFi Router and make web server in previous post.
What you will Learn?
- Making ESP32 as Access Point
- ESP32 as Station
- ESP32 as both Station and Access Point at the same time
- ESP32 as web server with HTML web page
- Using Java Scripts in ESP32
- Using CSS in ESP32
A Web server is a program that uses HTTP (Hypertext Transfer Protocol) to serve the files that form Web pages to users, in response to their requests, which are forwarded by their computers’ HTTP clients.
Continue reading ESP32 Access point (AP) and Station web server with HTML using Arduino IDE
In many IoT Applications we monitor sensor data and we want to display it in wab page. Web page requires frequent refresh to get the update from ESP32. To solve this problem you have two options, first is refresh page with HTML Tag: ex. refresh at every 30 seconds.
<meta http-equiv=”refresh” content=”30″>
Disadvantage of using HTML refresh tag is, it flickers the screen and loads complete page again and again.
Tools you need
only ESP32, Laptop and USB cable
What you will learn?
- ESP32 Ajax web page to display and update sensor data without refresh.
- Getting data from ESP32 without page refresh and update it in web page dynamically. such as ADC values or temperature readings.
Continue reading Web server on ESP32: How to update and display sensor values?
In this tutorial we interface RCWL-0516 Human body induction switch module Intelligent sensor (Radar Motion sensor) with Arduino.
This mini doppler radar motion sensor module is equipped with supporting DC 4-28V wide voltage. It will automatically continuously output the high level TTL signal when there is motion. 360 degree no blind angle detection and maximum 7m sensing distance. It is perfect for DIY microwave motion sensor light switch, human sensor toys, smart security devices, etc.
Continue reading RCWL-0516 Doppler Radar Sensor Interface with Arduino