Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hi pravin,
I think you are trying to run ...before you can walk.
Please follow the following steps:
1. Turn ON, only one Row and One Column: Only ONE LED must Turn ON.
If it is NOT turning ON, then check your program and/or hardware. whether the voltage on these pins is as per your written...
Many thanks FvM and umery2k75,
Guess what, I don't even know the topologies.
But I guess, This might work, based on the feedback from customer, other engineers, Internet (particularly EDABoard), etc...
Use a 3phase step down transformer with HexPhase output with Neutral (Secondary Side).
Use 3...
Hi Forum Members,
I have an enquiry to develop a Microcontroller based unit that converts 3-phase mains supply into 50Volts, 1000Amps. (Max.).
The current Limit is dependant upon the model. We can have 50Amps, 100Amps, 200Amps, 500Amps or 1000Amps (max.).
As per the SetCurrent, I am supposed...
Re: PIC vs 8051
Hi w_bwr,
You can cut vegetables with a knife or you can kill a person with a knife. So it depends upon who is using the knife and how and on what.
If I was in your place:
I would first see, what resources, I am having.
1. Assembler/Compiler/Debuuger/Programmer. If I have...
Hi sn_burki,
You can write the above code in Assembly.
If you do not understand the above code, then post your display routine (ISR).
I will modify it to scroll the messages, and post it back here.
Please see to it that you comment the code, so that it will be easy for others (also) to...
Hi,
I do not know the details that you are asking for, but, recently, I had been to trade show ELECRAMA in Mumbai,INDIA, and UC-Microsystems is coming up with kits and add-on modules, for training people in MCS51.
One of their Add-on Module is using P89V51RD2 with a direct USB connectivity...
Hi,
Sorry for replying late to you, I was out of town for few days, hence I am writing late to you. Well, here are some answers:
5a. How messages are scrolled?
Answer:
By now, I think you are familiar with Display Buffer.
In the ISR, you are showing the contents of the display buffer. The size...
Hi,
I had developed this product some time back. It was showing 3 languages: English, Hindi/Marathi and Gujrati. It could be extended to show other languages also.
Before we can start I would like to know the following:
1. Is this is student project or a commercial project?
2. What is your...
Hi,
I have built and used Sunrom programmer 1001-3456-v2 (ProLoad Ver. 5.4) for the last 6 months for AT89C52/AT89S52, and am satisfied with it.:D
Now I want to program AT89C55WD. This always gives an error on Verify Fail at Address 1.:cry:
When I put this IC into another USB...
using gprs for communication
Thanks s.kesavan for your reply.
Voltages and hardware has been taken care of. My worry is:
Which are the AT commands (and in what sequence) are to be used to acieve this task.
I have also posted this query on one of my favourite forum:
**broken link removed**
sim300 gprs communications
Hi,
I have a product that has RS232 connection between PC and Microcontroller based product. I want to eliminate the RS232 cable, and use SIM300 modules at both ends using GPRS.
Can anybody guide me to achieve this? Any links to AppNotes, info, etc will be...
scrolling led display block diagram
Hi ignitedindian,
I was not able to open the DSN file, What software and version are you using ?
Preferably post the GIF file for schematic, so that everybody can see it.
Since I could not see the diagram, so I am not going through your code.
The...
So what should be the values of resistors ? I cannot calculate them. Can you please inform me about it?
After posting this problem, I referred to this link:
#1160321
I just changed the Output transistor from TIP127(PNP) to BC547(NPN) with the necessary changes as in the above link....And the...
calculating 4-20 milliamp circuit
Hi All,
I had downloaded this circuit somewhere from this site.
Last 4 days I am struggling to get this 4-20 mAmp circuit to work.
I modified the input stage of first opamp. In the original circuit the resistors R3, R4 were absent. Hence the first opamp was...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
