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Thanks for that, i was hoping "No" wasn't going to be the answer, and making a pot with several fets and resistors becomes too large and and defeats the purpose.

That's classified information to prevent hackers taking over satellite services. I imagine you would like to try that too?

Hi All

I want to replace some old legacy analog pots with modern digital pot(chips) such as the microchip MCP4xxx range.
This ‎will then allow me to control the pot values from a remote panel or...

damn damn damn damn...Futurlec don't carry them in stock, even though the site says "in stock", it's taken me a month of waiting and now getting emails about "sorry we dont have stock"

still...

Thanks, i forgot about them, and they have low prices on chips AND postage.

Looking specifically for:

PIC18F25k22 (28pin DIP)

PIC18F45k22 (40pin DIP)

No SMD's please..


sigh....

Yes, my paypal is linked to my bank account, i have no cards.

I tried mouser, i tried buying 10 chips, approx $40 total (for 2 types), then they wanted $70 postage/handling....i shut that site...

Regarding fake PICs from chinese ebay sellers (amongst all the other IC's and transistors they mass produce without dies inside)

It's not such a big deal to lose the money as long as they're small...

Nope, Paypal isn't even an option amongst the visacard options etc...must be a local thing as u said..

Fakes.............

Hi All,

I'm in Australia and I don't have a credit card.... i live debt/credit free (lucky me).
The downside is i can't buy things online unless it's via Paypal.

Can anyone point me to a PIC...

Thanx so much for everyones input, something for me to consider and learn mroe about, i'd never even heard of co-opeartive multitasking, let along how to implement it in a pic/picaxe lol. (more...

Yes, perhaps i was looking at it all "backwards" hence my overall question of how people prefer to keep busy code running smoothly ;-)

I guess what i'm really asking is how to setup my loop(s) in an order from most-used tasks (update LEDs) to least-used tasks (read pots/switches) and process them all in a way that keep it running...

Hi All,

I'm looking for help on the best way to structure code that has multiple tasks happening, while not interrupting or slowing the overall operation at any given time.
For example, i want to...

Just thought i'd mention you're using 18uSecs for your strobe pulses....

Looking at the diagram, 18uS is the MINIMUM duration, so you're right on the edge of it not strobing, or being intermittent...

wow, that's a lot of junk going on ;-)
thanks.

Excuse my ignorance, but what's the alternative to setting bits without using high/low?
Is it preferable just to use "PORTB.1 = 1" etc?

Regards,
Marty.

Hmmm, i'll need to read all that a few times to sink in lol

Basically, i have 4 variables i'm using, but i'm only using data in the LSB of each variable, so the values only range from $00 to $0F,...

oh, i may have answered my own question now.....

Since working with 8bit bytes etc, maybe is should just isolate my variables?
something like

LO_nibble = PortB & %00001111, for READING LSB...

Hi All,

I have some code that works around using 4bit(nibbles) to process the code.

Since there's no 'Nibble" option when configuring the VAR varaiables i wonder how i go about accessing 1/2...

I recall most LCD's have a "cursor off" command? (i believe the OLED replacements for LCD's should also have cursor-off too).

Turn the cursor off at the beginning of your code, just after the LCD...

I'd be concerned about potentially driving 13volts/Mclr onto the PGC/D pin if the 5pin header was reversed ;-(

I think the ultimate solution for a non-keyed connector would be using an 8pin...

Thanks Sheldon, makes perfect sense.


Yes, i had no intention of using the VCC to provide power to the chip, so i was down to 4 pins myself ;-)

I guess i can use an indexed 4pin header so...

Thanks Dwight, but i have some harware/chips on order already.

I'm in downunder Australia anyway ;-)

Thanks to everyones comments, it's cleared a lot up for me to start moving forward.
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