Today in this tutorial we will learn importance of watchdog timer and configuring watchdog timer in Arduino.
What is Watchdog Timer ?
A watchdog timer (WDT) is a hardware timer that automatically generates a system reset if the main program neglects to periodically service(reset) it. The Watchdog Timer is clocked from a separate On-chip Oscillator which runs at 1 MHz. This is the typical value at V CC = 5V. It is often used to automatically reset an Arduino that hangs because of a software or hardware fault. Some systems may also refer to it as a computer operating properly (COP) timer. All Arduino boards have watchdog timer hardware. Continue reading Tutorial On Arduino Watchdog Timer Setup
Most beginner have questions on which one is for me? Arduino or Raspberry Pi to know which is for you ? We must know what is arduino and Raspberry pi.
What is the difference between the Arduino and Raspberry Pi?
In short Arduino is microcontroller board based on ATmega328p microcontroller without OS running at 16MHz clock having memory in kilo bytes and Raspberry Pi is like single board computer running at 1.2 Ghz speed with Linux operating system with memory in Giga bytes. Continue reading Arduino vs Raspberry Pi
This tutorial demonstrate how to get NTP Network Time using ESP8266 NodeMCU? Getting network time is much simpler than adding external RTC Chip to ESP8266. Use of NTP with ESP8266 makes getting time simpler and accurate. Continue reading ESP8266 NodeMCU NTP (Network Time Protocol) Clock
ESP8266 NodeMCU Wi-Fi Scanner allows you to easily locate visible wireless networks and its corresponding information. This program obtains the network name (SSID), signal strength (RSSI) and MAC Address, security.
Wi-Fi Scanner is useful for normal access point users who need to find out the signal strength distribution for their wireless network at home, or choose a position for their access point for optimal signal quality.
Using Wi-Fi Scanner, you can evaluate the allocation of wireless networks by channel and select the least congested bandwidth for their access point, allowing them to increase their connection speed significantly. Continue reading ESP8266 NodeMCU WiFi Network Scanner
In this tutorial we interface 16×2 LCD display with ESP8266 NodeMCU without using I2C and with minimum pins i.e. using only 3 pins. To interface LCD with ESP8266 we need at least 6 IO lines but ESP already have very few IO lines, to expand IO lines we use serial to parallel shift register IC 74HC595. Continue reading ESP8266 NodeMCU 16×2 LCD Interface