We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
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,
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