Hi dazheng,
Need to know ... what is EEPROM used in MCU for ?. I know EEPROM stand for Electrical Erasable Programming ROM but I need to know what's the purpose or where it going to be used in MCU?
I ask this because some of MCU dont have EEPROM ( EEPROM = 0 byte) ie 80NC535 & 80NC321 and the best thing about this MCU (without EEPROM) that's its cheaper than MCU with EEPROM. If it just minor used and can solve it in other method (and not effect my project) , I will use it as I need to lower the cost as much as possible.
Any instruction (ie in proton) that must be used on MCU with EEPROM ?
More explanation greatly appreciated.
Thanks
zuisti
Hi "zuisti",
She wants the EEPROM for keeping the program when changed.
Will flash Magic Support this one ?
I happen to have a few pieces of this controller!!
I'm ready(?) with this work yet. It is a two mode (switchable) 8 char dot matrix display, working in Proteus, with source in javaC: I'm used a 89c734a.
- in scrolling mode it has a buffer for a max 54 chars message. The speed is controllable. - in static mode it is cascadable, set the position in the received string with the pos. switch.
The attached ZIP contains the orig. article (a PDF), as my start point. Please read it!
Please post here your minds!
"She wants the EEPROM for keeping the program when changed."
No, she doesn't. I checked with her and she wants it for calibration data storage.
This thread isn't intended to be meaningful :)
This thread isn't intended to be meaningful
What a relief!
I was starting to think that I've lost touch with modern design techniques.
another day, another week, another woman (hehe)
By the terms "load labeL, solar panel label, batt label' , i mean "load current, solar panel current and battery voltage" ? In the schematic , i are sensing the voltage across R2 which represents the current drawn from the battery. Then i is using a voltage divider to take a sample of this voltage and producing analog sample using an opamp digital amplifier. I feel this circuit can work much better to sense the battery current.I feel it will work better accuracy if R2 is reduced further (at the cost of watterage).
i want to use it for solar charger and controller , if i use this block for detect load label then it will work at real hardware? i am using mcu with lcd display for showing parameter. batt label, solar panel label , load label, and also with sun tracker(not use at this moment) . have u any idea for that type of project.
thanks
I know you've a good programmer and understand lots, but i've found an artic that you will like to become king master guru !
its advanced c pointer use and how to explain arrays;
www.gamedev.net/.../article1697.asp
I read some but got lost.i am not such goodd programmer as you mate.
readn and learn lots mate.
Oh No! - don't let him loose with pointers...!!
=:0
You're quite a butcher, I must say.
"i are sensing the voltage across R2 which represents the current drawn from the battery. Then i is using a voltage divider ..."
s/i are/I am/ s/i is/ I am/
"... further (at the cost of watterage)."
s/watterage/wattage/
"i want to use it for solar charger and controller , if i use this block for detect load label then it will work at real hardware?"
Is that a statement or a question?
"but i've found an artic that you will like to become king master guru !
">www.gamedev.net/.../article1697.asp"
You're kidding, right? With errors occurring in the very first code snippet in Chapter 1, I didn't even bother to read further.
"Is that a statement or a question?"
For your reference, that's a question.
And for your further reference, that's a statement.
"By the terms 'load labeL', 'solar panel label', 'batt label' , i mean 'load current', 'solar panel current' and 'battery voltage'"
Yes, that's a great idea - let's just choose some random word like 'label' and use it to mean 'voltage' or 'current' at random.
Why don't you just call eveything "Bruce" to avoid confusion?!
thanks MatE,
briliant article that.i've been wriing me own ones recentkly and hope to put on a website like that; maybe with results of some of our the other work yeah?
fame man! maybe the trollops around here will learn from you're quality investegations.
last problem you know this; I think you are asking for the code which are contained in a matrix form all the dots for a character. I've seen som examples from the web with this codification, I dont know what are you programming ATM, but the codification its universal, keep looking good luck
thanks agaiin for the article. you remember it for the good future yea !
"With errors occurring in the very first code snippet in Chapter 1, I didn't even bother to read further."
Its description of the terms lvalue and rvalue is also somewhat askew...
"briliant article that."
Yeah brilliant, mistakes and all. Let's all learn to write bad code. You two are already experts at writing crappy code.
"i've been wriing me own ones recentkly ..."
Oh, please spare us. There's already too much crappy code on the web. Thanks anyway.
"... the trollops around here ..."
Your sister? Where, WHERE!? I am mighty curious to this bushy maiden. Is the circus in town?
"Its description of the terms lvalue and rvalue is also somewhat askew."
Indeed, yet "brilliant" in the eyes of at least one of the nitwits.
Hi,
I think that's not true with the solar labal buttorn . If you assume the digital pot is connected to a reference voltage with the MCU and GND and gives a voltage at the middle contacts, your calculation might be right, but it depends on how the circit is designed and works? The pot can be part of a RCL time giving circuit, it might float(?) over ground or lie in the loopback of an digital mru OPamp, therefor you cannot simply assume a GND referenced DC voltage of level 'A' will make the servo move right and a voltage of level 'B' will make it move left. If it is an seudo analog circuit it is probably that you shortcut (disable) the RC timer by pulling the middle and upper connector to GND with R12 and C15, the time constents of the circuit will be reduced to the lowest value possible and that makes your servo move in one direction only - but as result of an error not as a result of applying the right voltage level.
You need to further analize the circuit to understand what the right solution might be. Replacing the pots with digital types in any way should work but isn't cheap all.
"float(?)"
Correct. A green star for you!
When you doubt how a word is spelled, look it up in the dictionary. Don't ask here.
Hi zuisti,
Im too interested in forgeting the first project now bcoz it is to easy and building the second project in the list, I am thinking about:
what mpuC to use? i think one with big speed will bee needed for ADC and movement?
is a single mpu enough to control all the axes orf movement. one for each is better.we can finish project qwikly if we get get one person to write code for each and.
No decision made yet so plz help me(?) for the best work.
trolops are v mean about my sister. plz dont mention her again here.she is not happy with meye
your business friend,
dazheng
ach, and you know my sister is NOT very hairy.
When handling many axes, it is extremely important that the controlling chip is intelligent enough - a runaway axe can generate a lot of damage in a short time!
I would recommend the use of either a Itanium 2, one of the more recent PA-RISC processors or possibly an Opteron solution.
and just who do you think is doing the butting-in, then?!
Are you finally coming to realise that this is not the place to carry on your private conversation?!
Once you fully realise this, perhaps you will go away to a more appropriate place for your inane babblings.
Please.
"Im too interested in forgeting the first project now bcoz it is to easy and building the second project in the list"
Yes - what's the point in finishing one project before you start the next?!
"plz dont mention her again here"
You shouldn't have mentioned her in the first place!
Particularly not here!!
"she is not happy with me"
I'm not surprised!
"is a single mpu enough to control all the axes orf movement."
Is that a question or a statement?
Anyway, a simple, but strong MPU is needed. Orf axes are quite heavy. The ones I've seen wielded are at least 50 pounds, but not a problem for big strong Orfs.
"she is not happy with meye"
I'll bet, what with you suggesting her fur was plugging up the shower and all.
"and you know my sister is NOT very hairy."
Just 'a little chubby' then, I guess. Remember you said:
"if she goes backward the water is suck up shower"
So, she's so huge that backing out of the shower creates that much suction! She must be quite the vision of loveliness. (Shudder)
She probably was hairy until she got caught in the shower. Alas, it will grow out again in a short time.
By the way, I am really, really worried about those axes, unless they are mounted in a single-axis jig for chopping wood. A multi-axis multi-axe battle-axe setup would be seriously dangerous in case the watch dog doesn't perform his job and keeps the guard awake.
Maybe they should just practise with some small hatchets before moving on to the big axes...
Or maybe there's a strong contender for a Darwin Award here...
I just now noticed the subject about "butting in". That's so funny. Ha, us "butting in" in on you. What a hoot.
I remember asking before, the really interesting question of why you two dim-bulbs are not using e-mail, blogs, social networking websites, etc. to demonstrate your moronic stupidity.
You've got the ability to browse websites, but not e-mail each other. What absolute imbeciles!
"Maybe they should just practise with some small hatchets before moving on to the big axes...
Or maybe there's a strong contender for a Darwin Award here..."
With any luck they'll chop off their wee naughty parts and we'll be spared the possibility of their procreation.
"why you two dim-bulbs are not using e-mail, blogs, social networking websites, etc."
Maybe they've been banned from them already?
No, they are just bored and likes to post random noise in forums to see what happens.
No it's not random - it's just close enough to possibly be an attempt at a technical discussion.
So either they are really bright, and know how to get just close enough to making sense without actually making sense, or they really are that dumb...
No it's not random - it's just close enough to possibly be an attempt at a technical discussion. what comes to mind is "the blind leading the deaf"
Erik
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