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using usart on pic 16f874a

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Project Help (Author: yogesh puri)
Last post by ajay_bhargav    Wed May 24 2017, 05:01 AM
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Our robot expert Gaurav Khadasane has come up with another innovative way to control a robot. He is controlling his robot from an android phone (with a Android GUI application) over bluetooth. Project uses our favourite 8051 microcontroller and HC-05 bluetooth module.

In this project 8051 and bluetooth module are communicating over uart @9600bps. Bluetooth module HC-05 is controlled via simple AT commands. This module comes in SMD package and works on 3.3v power supply. The BT module is a SPP supported profile so it can be connected easily to any controller or embedded device. In this profile the data sent and receive to module directly comes on the RX pin of microcontroller. It becomes really easy to make your device bluetooth compatible.

L293D H-Bridge motor driver are used to control two DC motors. A readymade compact size chassis is used to avoid the chassis assembly comlexities The chassis contains 2 decks the lower is used for BO motors fitting the upper is used as a battery stack. On top plate the controller board is mounted by screw fitting.

Finally the Android application, You can get Bluecontrol app from Google Play



Here is a working video of the project



If you have any doubts or comments Please use forum... Enjoy bulding robots

Please use download link below to download this project.
Android controlled robot using 8051 and bluetooth
Tags Android controlled robotandroid robot using 8051android bluetooth robot8051 bluetooth control8051 bluetooth android robot8051 bluetooth robot
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This project is an extention to previously uploaded "GSM Controlled Robot". Earlier project was only designed to be controlled using a mobile or GSM device whereas this project extends the control capabilities to custom designed RF Remote and A glove with Accelerometer.



This project is devided into two sections
1. Control/Encoder unit
2. Robot Unit

Control unit uses 433Mhz RF modules for sending control data to robot. Control unit receives data from either remote or an accelerometer module. Robot unit is actually the receving device which can receive data from either gsm device or RF recevier. Both RF reciever and GSM device send same kind of signals to control motors.

Control/encoder unit uses 8051 controller and its code is written in assembly whereas Robot unit uses AVR microcontroller, its source is written in C language. If you have already built the old GSM controlled robot then upgrading to this version of robot will not be difficult at all.

I have also added original project report came with GSM controlled robot, You can add more information in this project report to complete final report.

Here are working videos of project:

Multicontrol Robot - Control by Acclerometer



Multicontrol Robot - Control By Remote



Click download link below to download this project:
Multicontrol Robot - Control by GSM, Remote or Acclerometer

I would like to thank Gaurav Khadasane for submitting this project we would like to see more projects from you.
Tags multicontrol robotgsm controlled robotgsm controlled car8051 accelerometer8051 remote carrf controlled car
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Hi Friends, Its been a long time since I've been to website. But There were few main things that I was suppose to do a long time back. Here is a new year surprise for you all. Viktor has share another project with us a great design with practical use. An 8051 based Solar tracker with source written in assembly language. Viktor explains basic operation of this project.

PRINCIPLE OF OPERATION
The circuit comprises of three sections:
  1. light controlled circuit
  2. counter for timer
  3. switching circuit


1. Light controlled circuit:

This particular circuit controls other circuits. It puts the other circuit on or off depending the nature of the day. It comprises of LDR and transistor representation of smith trigger configured using two npn transistor(BC377) such that when there is a small potential difference across the LDR and variable resistor, The relay will be triggered to switch on other circuit. This circuit monitors day and night. The main function of this monitor is put off the device at night and turn it on in the mornining again.

2. counter for timer:
Since sun start from the east at 6:45am and set at exertly 12:45pm, the light controller circuit put on the whole circuit automatically making the timer to initialize its 6hrs counting sequence.

3. switching circuit:
This circuit is mainly used to control the direction of panel using a DC Actuator motor. Microcontroller AT89C2051 gets input from east and west Light control circuit and adjust panel to face sun direction.

Type of motor used:
24-36v d.c Actuator from super jack used in tv satalite dish polar adjustment

You can download project here:
Time Controlled Solar Tracking System (Assembly)
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Well this is one of the most interesting and long awaited project uploaded on any microcontroller website. Its an Inverter/UPS with inbuilt charging system based on 8051 (AT89C2051) with a rating of 3000VA. As you all know an inverter converts DC voltage to AC, This project uses 24V DC battery and convert it to 220v 50Hz AC. Here are some pictures of constructed hardware.





The inverter system is divided into six sections:
  1. Inverter
  2. Charger
  3. Multivibrator
  4. Powerpack
  5. Sensors and Indicators
  6. Automatic changeover


8051 controller plays its major role in "Sensors and Indicators" section. 8051 is used to monitor the voltages and indicate status through LEDs. You can also find UPS test design for Proteus VSM simulator, to stimulate the design in case of any doubt. It is the same controller circuit as given in pdf. At89c2051 uses an active low to perform its operation from lm393 voltage comparator that's why a push button is connected to ground to test the circuit.

You can find pictures, code and small documenation that explains the working and block diagram of this project. Incase you have any doubts, feel free to post on our forum at www.8051projects.net/forum.html

I would link to thank Victor (ugoo5000) for sharing his great project again with us. Also I want to apologize for delay in uploading this project I should have done it earlier. Thanks Victor for great contribution to this webiste.

Visit following link to download this project:
8051 based Inverter/UPS with inbuilt Charging system
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Conversation

Mon Jun 12 2017, 07:36 PM
madhusoodanan
how to receive string using 8051
ajay_bhargav
Thu Jun 08 2017, 05:48 PM
@Vinoth post in forum.
Wed Jun 07 2017, 06:40 AM
vinothkannan
how interface eprom in this code
Thu May 25 2017, 05:25 AM
Monir Hossain
Can i change the 7-Segment are common pin ? And how to?
Mon May 08 2017, 12:45 PM
ivan muvunyi
please can you send me wiring diagram for automatic control of 3 phase induction motor for production of maize flour
Wed May 03 2017, 08:39 PM
imran qureshi
hello friend
Sun Apr 30 2017, 05:49 AM
Lijin G Varghese
Can u send me the circuit diagram for Program to interface GSM Module with 8051 microcontroller (AT89C51) using PC and LCD
Fri Apr 28 2017, 03:47 PM
SANDEEP T S
I need pcb wizard 3.5 version kindly send valid link of yours
ExperimenterUK
Mon Apr 17 2017, 11:56 PM
Sorry..We had a problem with registration.Confirmation emails were not sent.Please re-register
Thu Apr 13 2017, 07:29 PM
Piyush Aughad
I want circuit & program for radar detection using Microcontroller 8051

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Comments

richard1976
Sat Jun 24 2017, 05:48 PM
DruvaN
Wed Jun 21 2017, 11:44 AM
lalala
Tue Jun 20 2017, 11:05 PM
Siddh@
Tue Jun 20 2017, 07:47 AM
firdaus0hsem
Sat Jun 17 2017, 04:53 PM
amir9297
Fri Jun 16 2017, 05:44 AM
madhusoodhanan
Mon Jun 12 2017, 07:31 PM
Aminookano
Sun Jun 11 2017, 05:50 AM

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ExperimenterUK Avatar
Posted By ExperimenterUK
Mon Jun 26 2017, 08:42 PM
I have attached a demonstration file.It will echo ...
richard1976 Avatar
Posted By richard1976
Sat Jun 24 2017, 08:47 PM
Hi can you tell me how to send and recieve usart d...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat Jun 24 2017, 08:24 PM
HiUnfortunately there is too much code here to wor...
richard1976 Avatar
Posted By richard1976
Sat Jun 24 2017, 06:01 PM
hi i have written this programme and can send data...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Jun 23 2017, 08:19 PM
>Should I need to check PWR_VLD bits every time on...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Jun 23 2017, 07:42 PM
I would say yes, but data transfer will be slower ...
Utsavi Avatar
Posted By Utsavi
Thu Jun 22 2017, 12:14 PM
Hello ExperimenterUK, Thanks for your support. Fro...
DruvaN Avatar
Posted By DruvaN
Wed Jun 21 2017, 11:51 AM
Is it possible to Use 8051 bit-banging method to p...
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Jun 20 2017, 06:27 PM
You could start by looking at this tutorial on ke...
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Posted By firdaus0hsem
Sat Jun 17 2017, 04:58 PM
I have an issue regarding how to use 4x3 keypad to...