Hello everyone,
Recently I´ve been trying to make an alarm using some buzzers and a magnetic switch (reed switch).
I´ve made the picaxe read the pins and so when pin0 = 1 the buzzer turns on.
Now my question is what code can I use to make the Picaxe read another Pin, and when that one is = 1 stop the buzzer?
If you post your code, we
If you post your code, we might be able to help you.
Have you read the PICAXE manuals?
code
main:
if pin0 = 1 then ledon
if pin0 = 0 then ledoff
ledon:
high 2
if pin1 = 1 then ledoff i tried this but just turns it off momentarily
ledoff:
low 2
pause 100
goto main
Answer found no worries
main:
if pin0 = 1 then ledon
if pin0 = 0 then ledoff
ledon:
high 2
if pin1 = 1 then ledoff Teh answer lies in this 2 lines
if pin1 = 0 then ledon
ledoff:
low 2
low 1
pause 100
goto main
Any ways thanks for worrying 
The commands are done in order
This is not a programming issues, this is a “draw a flow chart on paper” issue…
I would “remember” the state of things using a variable. --This is assuming you want a momentary push to equal a constant buzz.
main:
if pin1=1 then let b0=1
pause 100 'debounce the switch
endif
if pin2=1 then let b0=0
pause 100 'debounce the switch
endif
if b0=1 then high 3
else
low 3
endif
goto main
Another way of doing this
Another way of doing this might be like this;
main:
if pin1 = 1 then gosub LEDon
if pin2 = 1 then gosub LEDoff
goto main
LEDon:
high 3
return
LEDoff:
low 3
return
It doesn’t involve use of memory if you don’t need to know the state later in your program. And you don’t need the debounce delay as the sub will only execute on button press and if it does it several times it doesn’t matter.
**I see **
I think I understand what you mean, I didnt think I had to debounce the switches s I was unsure about that, anyways I got it working thanks for the advices!
Switch debouncing is a
Switch debouncing is a problem that occurs with mechanical switching. The signal bounces on an off for a period and might mess up your program. You can read more about it here http://www.labbookpages.co.uk/electronics/debounce.html
Multiple pins
thank you for all the answers, but if I want to read multiple pins like this:
if pin1, pin2, pin3, pin4 = 1 then ledon
if I want to do something like that how can I write it, because commas will give syntax error just as using “and”
I do not know picaxe so im
I do not know picaxe so im just winging this. Would it be:
if pin1=1 and if pin2=1 and if pin3=1 and if pin4=1 then ledon
If that doesnt do it then maybe this:
if pin1=1 and pin2=1 and pin3=1 and pin4=1 then ledon
Like i said i do not know that this is right.
**OMG dude **
OMG i cannot believe this you actually solved ma problem!
YAY! thanks!
I believe if you do
I believe if you do something like:
let b0 = pinsC
you can look at the binary form of the value in b0 to see bitwise which pins are high or low. This will only work with the better PICAXEs (X2s, M2s).
