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SHAH DISHANT H.Participant
Hi,
This is very crucial application.
You need to have sharp image processing.
As you need to implement this on real time hardware, OpenCV with LINUX on friendlyarm board will be a good option.
You can connect USB Webcam with that and perform image processing using OpenCV and drive GPIO pins to give alarm signals etc.
SHAH DISHANT H.ParticipantComparator is an input device and 7 seg is output device.
What is your exact application ?
SHAH DISHANT H.ParticipantHi,
What Bhatt sir has explained is perfect. But why u need such kind of system ?
Any specific use of it or its just for fun ??
SHAH DISHANT H.ParticipantHi,
Can you please describe exact application in depth ?
SHAH DISHANT H.ParticipantHi,
0.3 to 0.5 voltage drop is usual. This is becuse of two possible reasons.
1. Insufficient power input
2. More power sinking from 7805
In first case, measure the input voltage accross 7805 if it is enough or not.
For 2nd case, use metallic case 7805 which is having higher current capacity.
SHAH DISHANT H.ParticipantPlease post the code which you are using with the schematic.
SHAH DISHANT H.ParticipantHi,
Can u post code and hardware?
Check following things.
1. Is LED glowing when u r directly giving 5V supply to it ?
2. Is the voltage on pin is varying (logic 0 and logic 1) as per the program ?
3. If you have connected LEDs on P0, Have u connected external pull up resistor ?
4. Have u provided enough delay between blinking ?
We don’t have any fix issues with 8051 controllers. In market various products are designed with 8051 and it is having a great stability and life time.
Whetehr to continue with 8051 or not is upto you but surely 8051 is great part of Embedded World and we can’t blame on its power. My sir has designed Gold Melting Furnace which can melt 4 kg of gold within few mins and its in use by many of the world known jewellers even today. So definately, 8051 is a powerful and STABLE controller.
But yes, moving towards advanced controller is always a good choice for learning. You can shift to PIC, AVR or even ARM7.
So all the best.
SHAH DISHANT H.ParticipantHi,
How you have planned to work ?
How much you have done till now ?
Keep posting details…!!
SHAH DISHANT H.ParticipantHi,
First you have to make a cross connection between RF Module and controller.
Second thing you make sure your program for UART is working fine. To test that, connect 8051 with hyperterminal and program 8051 to send few data serially.
All the best.
SHAH DISHANT H.ParticipantHi Aayush,
Have you started working on it ?
Update please..!!
SHAH DISHANT H.ParticipantWhat are your requirements ?
What is the voltage and current to be supplied ?
For voltage regulation, we should use 78xx or LM117 ICs..!!
SHAH DISHANT H.ParticipantHi,
Which project you are saying my friend?
Post in detail so that we can help you…
May 27, 2014 at 3:09 am in reply to: asking about Use PIC Microcontroller For Voice Input And Output project. #11773SHAH DISHANT H.ParticipantProvide details please so that we can help.
If you want to play recorded voices than you can use APR Voice module. It has storage capacity of six voices.
May 27, 2014 at 3:03 am in reply to: how to interface a resistive touch screen to lpc2148 (arm7) microcontroller #11772SHAH DISHANT H.ParticipantHi,
What is the variation you are getting ?
Tell the range. actually the step size for LPC2148 is very small so you can expect a variation.
SHAH DISHANT H.ParticipantHi,
To control speed of AC motor, we need to use TRIAC drive. You can also use IGBT Driver to drive motor at variable speed.
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