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Prabakaran P MParticipant
Hi karthick,
*First we are writting data to fetch the address or commands to the slave i.e first we have to send the address which we have to read and then we will read the data.Two address you have to fetch in I2C one is Slave address and another one is Register address for reading the register data.
*As far as i go through the datasheet i can't find any way to configure both master and slave mode. you can achieve it by the program logic which will change the register values accordingly.
http://www.engineersgarage.com/articles/gsm-gprs-modules
http://www.engineersgarage.com/tutorials/gps-receivers-nmea-standards
http://www.engineersgarage.com/embedded/avr-microcontroller-projects/gps-interface-circuit
Prabakaran P MParticipantFeel free to post your doubts
Prabakaran P MParticipantDS1307 has total 64 bytes of memory area which is divided into two segments:
- RTC Register Area
- General Purpose RAM
0x00 Seconds 0x01 Minutes 0x02 Hours 0x03 Day 0x04 Date 0x05 Month 0x06 Year 0x07 Control 0x08
0x3FRAM
56 x 8
Each parameters of time is stored in different address thats why we are denoting the address
Prabakaran P MParticipantHi karthick
I'm not sure about what compiler you are using, my suggestion for you is to use MikroC for pic google it you can find sample code to read RTC register. It is a free software with 2KB of Code limitation.
Prabakaran P MParticipantHi Kirubakaran
You can refer this link to start your project
http://www.engineersgarage.com/arm-projects/uart-programming-for-lpc2148
Prabakaran P MParticipantHi Karthick
what microcontroller have you choosed to read the RTC register.
Prabakaran P MParticipantHi Rohit
This Problem is due to the permission error. Check these key points
Make sure that u placed the /home/pi folder.
You can directly download the zip file to the /home/pi folder using "wget" followed by the link to download the zip file and follow by the commands in the tutorial.
You can try "sudo./blink"
August 18, 2015 at 6:34 am in reply to: Making and Receiving Phone Call with Gsm Modem and Arduino[Java rxtx] #13179Prabakaran P MParticipantHi,
If my understanding is correct you are planning to create a IVRS system which is stand alone and datas given by the customer should be sent to computer.
My suggestions are
1.As you already know you csn DTMF decoder to get user data.
2.For Audio output you can interface SD card to the arduino which consisits of all your Sound files in WAV format so that you can play corresponding to the user key press audio by choosing from SD card. which can be given to the input(i.e MIC of the GSM)
3. My last suggestion is to use hardware serial for the communication GSM and Arduino and soft serial for the communication between the PC and arduino.
Prabakaran P MParticipantHi Suguna kumari
I can't get you. if my guess is correct you trying to get information about 8051. more informations are available in the 8051 section.
Prabakaran P MParticipantHi Palaniyappan
Yes, it is possible to Store text file in the Raspberry Pi. You can use a python to create a webserver and make arduino as a client, so that you can tranfer the text file. first go through the basics of raspberry pi and you can save any data in a text file.
Prabakaran P MParticipanthttp://www.engineersgarage.com/contribution/40w-inverter
This is just for a reference you have to research and add more components according to your power and efficiency requirement.
August 14, 2015 at 5:56 am in reply to: SOURCE CODE for THREE PHASE 440 VOLTS PHASE DETECTOR/FAILURE #13169Prabakaran P MParticipantFirst check the outpit of the voltage divider in each phase about voltage and if it is possible check with CRO.
If your project is only to detect the phase then add diode inthe output of voltage divider which will act as a half rectifier.
Prabakaran P MParticipantBased on my surfing DSO202 is suitable for your applications.
Prabakaran P MParticipantwhen your Atmega IC's takes an analogue reading, it compares the voltage measured at the analogue pin being used against what is known as the reference voltage. In normal analogRead use, the reference voltage is the operating voltage of the board. For the more popular Arduino boards such as the Uno, Mega, Duemilanove and Leonardo/Yún boards, the operating voltage of 5V. If you have an Arduino Due board, the operating voltage is 3.3V.
So if you have a reference voltage of 5V, each unit returned by analogRead() is valued at 0.00488 V. (This is calculated by dividing 1024 into 5V). What if we want to measure voltages between 0 and 2, or 0 and 4.6? How would the ADC know what is 100% of our voltage range?
And therein lies the reason for the AREF pin. AREF means Analogue REFerence. It allows us to feed the Arduino a reference voltage from an external power supply. For example, if we want to measure voltages with a maximum range of 3.3V, we would feed a nice smooth 3.3V into the AREF pin – perhaps from a voltage regulator IC. Then the each step of the ADC would represent around 3.22 millivolts (divide 1024 into 3.3).
Note that the lowest reference voltage you can have is 1.1V. There are two forms of AREF – internal and external
Prabakaran P MParticipantFor accurate distance measurement you can go with ultrasonic sensor based distance measurement.
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