memory

Hi again zuisti,

i check with jafnek about capacitors.he says that you should try to get the mylar ones bcoz they are more cheep and best for digital MCU baords. bcoz your board is more that 50meg you dont want the polyproperlene ones.he says they are no good at are not good at high speeds.

forget trollop bcoz he does npt know. if you connect wrong way(to mains) the capcitor will pop.

Hi again zuisti,

i check with jafnek about capacitors.he says that you should try to get the mylar ones bcoz they are more cheep and best for digital MCU baords. bcoz your board is more that 50meg you dont want the polyproperlene ones.he says they are no good at are not good at high speeds.

forget trollop bcoz he does npt know. if you connect wrong way(to mains) the capcitor will pop.

You really are a funny guy. The metallized polyester caps are not polarized...

And by the way - are you going to decouple to mains...

Hi dazheng,

YAAAAAAA.I found the answer to last week and i think we can go for it.

A op amp may be analogue in design but it is frequencly used in digital equipment, i.e. analog to digital converters , esp 'flash' conversion... the question asked is difficult to answer because it is phrased badly..
a op amp is as different to a 'analogue ic' as a apple is different to an cow, a analogue(?) ic may contain op amps, but it will also have other 'stuff'... an op amp is just that..no more

can we connect them togethr and make an automatic MCU input for the module?

the code for the capacitor is ok qnd i will get some tomorrow.the MP3 file is now working and i only get a jump each 27 seconds. you were very right with the sector size.

pleas e give me advise and your wisdom again.

Thanks

zuisti

"bcoz your board is more that
50meg you dont want the
polyproperlene ones.he says
they are no good at are not
good at high speeds."

So, if I run at the high speed I should get the
polywronglene ones? Since those are much harder
to come by, I'll change the gating clocker to do
low speeds. OK?

"a op amp is as different to a
'analogue ic' as a apple is
different to an cow,"

No, an op amp is as different to a 'analogue ic'
as a nectarine is to an badger.

Hi dazheng,

I know you rbusy but i really need some advice from the programmer guru plz.

what is 'port change interrupt' (ports 4,5,6,7) means ... is it port change from low to high or high to low analog signal(?) or a changes of digital signal ie from 5V to 4.7V or 4.26V?

i need to further reduce the power consumption, all unused of hardware peripherals should be disabled. The pullups should be replaced with external resistors, and the internal pullups disabled with a resistor.but what value(?)

please be generous with your wisdoming voice.

Thanks,

zuisti

"what is 'port change interrupt' (ports 4,5,6,7) means ... is it port change from low to high or high to low analog signal(?) or a changes of digital signal ie from 5V to 4.7V or 4.26V?"

Such silly questions.

Such a waste of a guru's time.

"what is 'port change interrupt' (ports 4,5,6,7) means ... "

Good grief. Just look it up. No wonder our project sucks so bad. You're just mucking about blindly without reading a thing.

GET WITH THE PROGRAM!

"is it port change from low to high or high to low analog signal(?) or a changes of digital signal ie from 5V to 4.7V or 4.26V?"

Yes.

internal pullups disabled with a resistor.but what value(?)
This is an easy question. You need a resistor with the same value as the data sheet specifies for the internal pull-up, but with a negative value. Alas, negative resistances are a bit harder to manufacture, so it may affect your production cost slightly. I haven't seen anyone manufacturing monolithic negative resistors, but with a suitable power source and your loved op-amps, you may even produce your own negative resistors :)