Dallas 2405 Switch

Jon Chandler · Post by **Jon Chandler** » Mon Mar 10, 2008 8:24 am

Has anyone used the Dallas 2405 One Wire switch module successfully?

The examples to find switches find the one switch connected, but the example to toggle the switch fails. As far as I can tell, the toggle example never finds the switch....

Thanks for any comments!

Jon

David Barker · Post by **David Barker** » Mon Mar 10, 2008 10:43 am

This works for me

Code: Select all

Device = 18F452
Clock = 20

#option OW_PIN = PORTC.0
Include "DS2405.bas"

// find a switch...
If Find Then
   While true
      SwitchToggle
      DelayMS(500)
   Wend     
EndIf

Wired up like the following

http://www.btinternet.com/~jon00/onewireintro.shtml

about half way down the page " Application - DS2405 used as a LED driver"

Jon Chandler · Post by **Jon Chandler** » Mon Mar 10, 2008 2:48 pm

I think I was too clever for my own good last night....

For a quick test and not having a 4.7k resistor handy, I thought "Ah ha. The I2C clock and data lines on my dev board have 4.7k pull-up resistors. I'll just change the pin designator and I'll be good to go." What I didn't consider in the middle of the night was that there's also an EPROM connected to those lines....oops.

Thanks for your reply David. I'll try again later today without the conflict!

Jon