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This project is an intelligent Accident alert system which not only notifies accidental alert but also provides the exact location where the accident has taken place. This project is submitted by a young enthusiast Pawan Kumar from Chennai. This is the first ARM project submitted on our website

This project is basically built around the powerful ARM7 microcontroller by NXP LPC2148. A 3-axis accelerometer MMA8451Q connected over I2C bus is used detect the accident condition. On detection, ARM reads the current coordinates from the GPS module (MT3318 connected on uart) and send an SMS to a predefined number or a call center though SIM900 GSM modem. This sms carries location information so a quick help can be sent to save the victims.

Following is a quite explainatory video which shows the working model of the project. I am sure there are no more words needed to explain this project after seeing this video.



You can download this project here:
Accident alert and vehicle tracking system

Thank you Pawan for sharing this project with us.

Yet another wonderful project submitted Harsh Pandya (pH) students of The Maharaja Sayajirao University Of Baroda, Gujarat. As the title says, This project is an automated Green house control system using microcontroller. Here is objective of this project taken from project report.

The objective of this project is to design a simple, easy to install, microcontroller-based circuit to monitor and record the values of temperature, soil moisture and sunlight of the natural environment that are continuously modified and controlled in order optimize them to achieve maximum plant growth and yield. The controller used is a low power, cost efficient and easily available. It communicates with the various sensor modules in real-time in order to control the light, aeration and drainage process efficiently inside a greenhouse by actuating a cooler, fogger, dripper and lights respectively according to the necessary condition of the crops. An integrated Liquid crystal display (LCD) is also used for real time display of data acquired from the various sensors and the same data is sent serially to a remote computer where complete data logging takes place. Also, the use of easily available components reduces the manufacturing and maintenance costs. The design is quite flexible as the software can be changed any time. It can thus be tailor-made to the specific requirements of the user.

This makes the proposed system to be an economical, portable and a low maintenance solution for greenhouse applications, especially in rural areas and for small scale agriculturists.



This project includes complete Code, schematic, project report, Power point presentation and various test modules. I again want to thank Harsh for making this great contribution to website.

Download here: In-House Green House (8051 Project with Project report and Presentation)

Hello friends,

Since last week I was working on migrating Rickey's World from old server to new server. During this migration there was some issue with the server license coz of which migrating to new server was not as smooth as it could be. Many of you might have noticed their missing posts, comments, chatbox messages and many of new members have lost their user logins. I tried my best to get maximum possible data i could get out of old server, But unfortunately I was not able to get last week's data (April 2nd to April 8th).

Incase you have lost your post or messages etc. Please create a new thread or repost your problems. and for those who lost their logins, Please Its a request to rejoin the website again to get new logins. We apologize for the inconvenience caused.

Keep your hopes up! and remember we are always here to help you.

Regards,
Team RW

A simple digital compass can be made using cmp03 compass sensor interfacing Arduino and output can be displayed on 16*2 lcd. Thanks to Santosh Mishra for submitting this project and making a valuable contribution.



Parts Needed
arduino board ,16*2 lcd ,cmp03 compass sensor ,general purpose pcb,wires solder iron,comb connectors etc

Arduino Board

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments. you can make you own Arduino Board see the links below

Make Your Own Arduino
Pinguino, PIC Based Arduino Clone
Boarduino, Solderless Breadboard Arduino Clone

Compass Sensor(cmp03)

The compass uses the Philips KMZ51 magnetic field sensor, which is sensitive enough to detect the Earths magnetic field. The output from two of them mounted at right angles to each other is used to compute the direction of the horizontal component of the Earths magnetic
field.see data sheet for detail

LCD
a general type 16*2 lcd is used

Schematic Diagram and Explanation of it

Detailed Schematic coming soon in download section

The Arduino uses 7bit I2C addresses, and our own documentation uses 8bit addresses. For example our CMPS03 is at address 0xc0, but on the Arduino you will use 0x60. The Arduino address is the same as our address, but shifted right by 1 bit. The binary of 0xC0 is 11000000, the binary of 0x60 is 01100000.
The Arduino will shift this left by 1bit and add the Read/Write bit automatically. This uses the I2C bus to connect the Arduino to the CMPS03. It reads the bearing as a two byte integer and displays the bearing as a number 0-359 on 16*2 lcd .

connection of circuit diagram is easy scl(2) and sda(3) is pulled up using 4.7 kohm resiters and scl is connected to anolog in A5 pin of arduino and sda is connected to anologue in A4 of arduino.LCD
connections are 4,6 and 11,12,13,14 is connected to 12, 11 and 5,4,3,2 respectively ,5pin of lcd is grounded .A 330ohms resistor is connected to pin 15 vcc if you need back light other wise can be left open.

Digital Compass in Action



Hex and C file

Click Here to Download