Count command Question

[biggmacattack]

Hi... I am using an 08m to count the number times a button is pressed in a specific amount of time (more than 5X). Then depending on the amount of times the button is pressed have the chip illuminate an led. I can't seem to get this to work in the simulator.

So, is this operator error or will the simulator not count the number of inputs?

Thanks

Main:
count 3, 5000, b1 'counts the button presses on pin3
If B1 > 5 then ledon 'reads b1 with an if/then 
goto main

ledon:
High 1 'led on
pause 500 
Low 1 'led off
goto main

 

[Michael 2727]

Use the Generic Button in the SIM, this will increment b1 x 50.
To bring up the Variables window use the arrow, bottom right
corner of the SIM window.

 

[biggmacattack]

Use the Generic Button in the SIM, this will increment b1 x 50.
To bring up the Variables window use the arrow, bottom right
corner of the SIM window.

Operator error..... got it!

Thank you!

 

[westaust55]

While noting that you are trying this in the simulator at present, for actual use in the PICAXE switch debounce is an issue.

When looking at a switch input directly, there is also a need to consider switch debounce to prevent unwanted extra counts.
Have a look at Manual section 3 page 26 for information about this.

The BUTTON command detailed in Manual 2 page 26 is a better option as this automatically debounces the switch presses. You will need to have a loop using the Timer commands to loop for the 4 seconds. Have a loop at Jeremy’s suggestion for a delay here:
http://www.picaxeforum.co.uk/showthread.php?t=10153

 

[Michael 2727]

The Hardware solution to switch debounce is to place a small
capacitor 0.1µf or 100n across the switch contacts.
This works better than 95% of the time unless you have a really bad switch, try 0.22µf - 220n.

 

[biggmacattack]

Michael and westaust55

Thanks to both of you for the input. I was aware of the switch bounce but had no idea of correcting it using a cap or the button command. To tell you the truth I was going to try to correct that on the fly.

You just saved me half a bottle of aspirin I'm sure.

I've got everything on the protoboard right now and will try both suggestions. Thanks again.