Interfacing the Neo-6M GPS Module & Raspberry Pi with LCD Readout

One of the coolest embedded platforms like the Raspberry Pi has given makers and DIYers the ability to get location data easily using GPS module and thus build things that rely on location. With the amount of power packed by the Raspberry Pi, it certainly will be quite awesome to build GPS based projects with the same cheap GPS modules and that is the focus of this post. Today in this project we will Interface GPS module with Raspberry Pi 3.

The goal of this project is to collect location data (longitude and latitude) via UART from a GPS module and display them display on a 16×2 LCD, so if you are not familiar with the way the 16×2 LCD works with the Raspberry Pi, this is another great opportunity to learn.Read More

Voice Typing using Raspberry Pi and Android App

You must have familiar with Voice typing, which is very commonly used in Computers and mobiles phone, where you can type any word by speaking it. Voice typing is very useful for handicapped person or for anybody who wants to type fast. So today we are implementing the same on 16×2 LCD Display, where the voice text will be displayed on LCD. Here we have used 16×2 LCD, but this setup can be installed at many places with a bigger display to broadcast any message, like at airports, malls, offices etc.

In this project we will provide the input voice using Google Voice Keyboard via a Android App (BlueTerm) and print the text on 16×2 LCD using Raspberry Pi. Here we will type the text on 16×2 LCD using wireless Bluetooth Medium and will use USB Bluetooth dongle with Raspberry Pi. So basically we need interface the 16×2 LCD with Raspberry Pi and setup the Bluetooth in Raspberry Pi to receive the data sent by Mobile phone. Read More

Interfacing DHT11 Raspberry Pi with LCD Readout

Temperature and Humidity are the most common parameters that are being monitored in any environment. There are tons of sensors to choose from for measuring temperature and humidity, but the most used one is the DHT11 due to its decent measuring range and accuracy. It also works with one pin communication and hence is very easy to interface with Microcontrollers or Microprocessors. In this tutorial we are going to learn how to interface the popular DHT11 sensor with Raspberry Pi and display the value of temperature and humidity on a 16×2 LCD screen.

Overview of DHT11 Sensor:

The DHT11 sensor can measure relative humidity and temperature with the following specifications

Temperature Range: 0-50°C
Temperature Accuracy: ±2 °C
Humidity Range: 20-90% RH
Humidity Accuracy: ±5 %

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Raspberry Pi Alarm Clock using RTC Module DS1307

Although Raspberry Pi has an internal clock, but without internet connection this internal clock resets after every reboot. So to get accurate TIME without internet connection, we need to interface a RTC Module DS1307 to Raspberry Pi. RTC module has button battery for backup so the TIME will not reset. We have also built Alarm Clock using Arduinoand using ATmega32 AVR Microcontroller, check them too.

In this Raspberry Pi Digital Clock, a 16*2 Character LCD is to display Real Time, Alarm time and status of the alarm (ON/OFF). Once the program starts running in Pi, we can disconnect the monitor and can set the alarm with the help of this LCD and five buttons.Read More

Control a HD44780 LCD display via I2C

LCD character displays are a simple and a cost-effective way to display a text. Thanks to the HD44780 controller, the control of the modules has become very simple. However, one must occupy many GPIOs for it. An alternative is the I2C data bus, which means that only two GPIOs are used.

In this tutorial a 20×04 HD44780 character display is controlled using a I2C display adapter. A logic converter is used to adjusting the voltage level for the module without damaging GPIOs.Read More

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