General Help

Connect Arduino with nRF24L01 Radio

The nRF24L01+ transceiver module uses the 2.4GHz band and it can operate with baud rates from 250kbps up-to 2Mbps true ultra low power and low cost transceiver. nRF24L01+ communicate with Arduino via SPI interface and it consumes around 12mA with operating voltage from 1.9v to 3.3v. nRF24L01+ can communicate with other nRF transceiver modules and it can reach 100m in clear line of sight with lower baud rate. In this article I will explain you how to connect nRF24L01 with…

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One Wire Temperature Sensor – DS18B20 to MySQL/MariaDB Database

If you followed instructions on how to connect One Wire DS18B20 to Raspberry pi gpio then next step would be how to take temperature readings from DS18B20 1-Wire digital temperature sensor and store these readings to MySQL/MariaDB database. As you may know that each DS18B20 1-Wire digital temperature sensor has a unique 64-bit serial number wonderful part that we can have more then one DS18B20 1-Wire digital temperature sensor connected to same 1-Wire bus. MySQL/MariaDB Table Structure In order to…

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Install Apache, PHP 7.0 and MySQL/MariaDB on a Raspberry Pi (LAMP) with phpMyAdmin

LAMP is an acronym that stands for Linux Apache, MySQL/MariaDB and PHP. i have LAMP installation post for PiHome but i see lots and lots of people are looking for setting up php 7 with phpMyAdmin and MariaDB on raspberry pi and there isn’t any comprehensive set of instruction that covers this all for PHP 7, MariaDB on raspberry pi. If you are installing LAMP on your Raspberry Pi for PiHome you can refer to this post as php 7…

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How to setup OpenVPN on Raspberry Pi

Raspberry Pi OpenVPN is a great way to access a home network from a remote location. In addition it can be used to secure network communications when connecting to public Wi-Fi. Since the RPi is very low-powered single board computer it is ideal for setup your own Raspberry VPN server with OpenVPN. OpenVPN comes with Easy_RSA, a simple package for using the RSA encryption. Let’s find out how you can how to setup OpenVPN on Raspberry Pi device. Why VPN?…

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MySQL Access From Remote Computer

By Default MySQL only accept local connection to enable MySQL access from remote computer we need to make some changes. Edit /etc/mysql/my.cnf file and search for bind-address line and comment it out and save it.

User Permission Login to MySQL by issuing following command, you will be prompted for my your MySQL root password.

Enter MySQL root password that we set when you installed MySQL server on rpi, after successful login issue following command to give access to…

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WiringPi Installation

WiringPi is required to interact with Raspberry Pi’s GPIO pins, it plays very important port to control each each zone heating. Install WiringPi on Raspberry Pi WiringPi is maintained under GIT, If you do not have GIT installed, then under any of the Debian releases (e.g. Raspbian), you can install it.

If you get any errors here, make sure your Pi is up to date with the latest versions of Raspbian or you can do so with following commands:…

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DS18B20 Temperature Sensor with Raspberry Pi

One Wire temperature sensor DS18B20 is very popular and easily available because they are quite cheap and provide satisfactory precision of temperature readings. One wire DS18b20 has operating temperature range from -55°C to +125°C with accurate to ±0.5°C. DS18B20  can easily interface with Raspberry Pi. This sensor has three pins: VCC, GND and DATA. The voltage range is between 3.0 to 5.5 so this can be easily interfaced with raspberry pi. To communicate with the sensor 1-wire protocol is used.…

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Raspberry Pi WiFi setup

I prefer to use WiFi on Raspberry Pi as it makes RPi portable and limits the numbers of cable attached to this small mighty computer lets do Raspberry Pi WiFi setup to have less cables attached to this might computer. Setup WiFi on Raspberry Pi Lets setup wifi on raspberry pi so we can go wireless, First you need to scan for wifi networks, use the command sudo iwlist scanning wlan0 scan to list all available wifi networks in your…

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