I want to pulse a LED using parasitic power on a ow network using owserver.

If you send the correct command the pin will pulse for between 250 ms and 1000 ms. The datasheet pulse access example sequence is CCh A5h FEh 01h to pulse P0.

Using i = C dv/dt with 1 V and 1 mA and 1 s C = 1000 uF so fairly realistic.

How do you send this command with owserver?

The alternative might be to use a smaller capacitor and drain the passive DS28E04 supply pin until it resets. Will this work?


Following this up with owfs-developers I discovered that the function is not currently implemented.

Watch this space...

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  • I'm watching! :-) I've just asked a very slightly related question. – uhoh Dec 9 '17 at 14:27
  • 1
    This is a very specific hardware implementation issue. owfs works well! – skvery Dec 9 '17 at 20:03

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