D
Danny T
Guest
Anthony Fremont wrote:
Can we say tacky?
would work though, given I'd end up with different currents depending on
how many pins where high/low!
I need for my clock? Should I put resistors between them?
Oh, and each output from my "driver" is connected to 4 inputs (one from
each of the other pics) - anything I should be careful of there - 4
inputs probably draw 4 times as much current - is there a problem here?
--
Danny
Sounds like fun! Just make sure you're not posessed to get Blue LEDs...I always wanted to put a pic, a lithium battery, a hall sensor (or MEMS
accelerometer to be really cool) and a column of LEDs into a pendulum
bob. Then the swinging column of LEDs could strobe out the date/time in
a format suitable for people that have problems with analog dials and
hands. ;-) I really have to get this done.
Can we say tacky?
I believe one resistor would do all the pins.. I'm not sure how thatYes, you would pick your resistor size so that enough current could be
supplied to the device being switched on and off.
would work though, given I'd end up with different currents depending on
how many pins where high/low!
Do you mean having the output of a pic fed to the input of another? LikeYou can do it either way you prefer. Many CMOS parts are better at
sinking current than sourcing it, but the PICs have the same limit
either way (usually 25mA per pin)
When the PIC is outputing a 0, then it is actively driving the pin low
and can sink current. When it is outputing a 1, it is actively driving
the pin high (except RA4) and can source current. If you hook two PICs
together and try to have a dualing outputs contest, one of the pins will
not survive. Always use a current limiting resistor between pins that
might try to do this.
I need for my clock? Should I put resistors between them?
Oh, and each output from my "driver" is connected to 4 inputs (one from
each of the other pics) - anything I should be careful of there - 4
inputs probably draw 4 times as much current - is there a problem here?
--
Danny