Brain Memory Implants: Something to Remember

Written By: 
Shalem Parvas

“The goal is to improve the quality of life for somebody who has had a severe memory deficit. If I can give them the ability to form new long term memories for half the conditions that most people live in, I’ll be happy as hell, and so will be most patients.” – Theodore Berger (Inventor of the Memory Implants)

The field of biomedical engineering has risen to a new level in the past few decades. It combines various fields of engineering to ultimately design and develop artificial body parts which can duplicate its biological counterpart. It absorbs principles from different disciplines including biotechnology, medicine, mechanical engineering, electronics, computer science, etc. and applies it on the biological machine that is our body. 

Angle and Distance Measurement Device using Arduino

Contributor: 
Deepesh Verma

This project demonstrates the interfacing of Accelerometer (ADXL335) with Arduino and calibrating it to measure Angle from a reference plane. Also measuring the distance from object in its line of sight. The sensor data is fed to Arduino (Analog Input), it is processed and then the values are displayed on and 16x2 LCD.

ADXL335 is 3-axis accelerometer with analog output from Analog Devices. ADXL335 acceleration measurement range is +/- 3 g. The Voltage requirement of IC-ADXL335 is typically 3.3V, but the module has on board regulator, which facilitates connection of 5V supply to it. It is extremely Low-Power device.

 

DC Motor Control with Joystick & AVR Microcontroller

Contributor: 
A. M. Bhatt

In many of the applications it is required to alter the direction of DC motor instantly. Like in washing machine, mixer, drilling machine winding – rewinding machine etc. Changing the direction of DC motor using joystick is most suitable and handy method.

In industries the joystick control is most preferable way to control machinery that is operated with DC motor. The best example is 3 axis or 2 axis DC motor operated crane. In this, 3 (or 2) DC motors  moves crane up or down, rotate it left or right using 3 (or 2) joysticks

Guidelines to Use A PMDC Motor in Electronic Circuits

Contributor: 
Ajish Alfred

Electric motors are the most convenient ­­devices in use which can convert the electrical energy into mechanical energy. Electrical motors converts the electrical energy to rotational motion which can then be easily converted to any kind of mechanical motion like moving a robotic arm, moving a needle in a sewing machine etc. The Permanent Magnet Direct Current (PMDC) motors are especially useful since they are very easy to control, produce a lot of power and come in various sizes, shapes and voltage ratings.

When used with electrical or electronic circuits one must be careful about certain things like the current consuming, torque, RPM etc. This article mainly discusses those things and also the details of circuits which can be used to drive the PMDC motors.

Obstacle Avoiding Robot Without Microcontroller

Contributor: 
Siddharth Dev

Obstacle avoidance is one of the most important aspects of mobile robotics. Without it robot movement would be very restrictive and fragile.Obstacle Avoiding is a task which is used for detecting the objects placed in the path of your robot or any vehicle. So, to protect robot from any physical damages.

An obstacle avoiding robot is an intelligent device, which can automatically sense and overcome obstacles on its path. It is developed without micro-controller in order to eliminate critical circuits, difficult programming etc. All you want to do is to just understand the circuit diagram and start doing this robot. This simple technique can be incorporated in wheeled robots to keep them away from damages and accidentsObstacle Avoidance is a robotic discipline with the objective of moving vehicles on the basis of the sensorial information.

How to Transmit GPS Data from Arduino using Xbee

The system of satellites which helps in the positioning of a place on the surface of the earth is called Global Positioning System (GPS). The devices which can read the geographical coordinates of a place with the help of at least two to four GPS satellites are called GPS Receiver or simply GPS module. They can communicate with the other devices using serial communication protocols and hence they can be easily interfaced with microcontroller based systems.

The GPS module continuously produces a set of data regarding the position of the earth surface where it is situated which includes the current position with respect to the equator of the earth in terms of Latitude and Longitude. In this project the data regarding the geographical coordinate is extracted from the GPS output with the help of the Arduino and send it to a remote PC with the help of Xbee transceiver.