DS18B20 temperature sensor data logger

DS18B20 is a temperature sensor which communicates over a 1-Wire bus that by definition requires only one data line for communication with a host controller. I like DS18B20 as compare to other popular low cost temperature sensors for its accuracy and reliability. According to the DS18B20 data sheet, DS18B20 provides a digital Celsius temperature output with an accuracy of +/-0.5°C in the range of -10°C to +85°C. Continue reading “DS18B20 temperature sensor data logger”

Secure Nginx and WordPress with Fail2ban

A few days after this self-hosted Nginx server and WordPress up and running, I started to see massive login attempts trying to gain access on SSH and WordPress login. After evaluating various solutions and plugins, I settled on using Fail2ban to block such attacks, and here are the steps on how I did it. Continue reading “Secure Nginx and WordPress with Fail2ban”