[PD] problems with PIR and Firmata

Ricardo Dueñas Parada rduenasp at gmail.com
Wed Aug 13 07:10:03 CEST 2008


If you are sure it always bangs twice, you can use

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Ricardo D.


2008/8/12 Adityo Pratomo <quietdidit at gmail.com>

> hi there everybody, i have a question about the PIR in firmata. I'm
> connecting a PIR sensor to an ardunio board and then programming it on Pd
> using the Firmata firmware. Then, the input from the PIR sensor will detect
> any motion and any voltage output will be used to trigger a bang. But i have
> a problem, i guess the sensor will trigger the bang twice, since the output
> from the sensor change twice from a single motion. The question is how can i
> make the bang only react from the first trigger and then ignores the second
> trigger. I've used the delay routed to number "0", but it's useless since
> there's no exact time when the second trigger will occur. Any idea
> everybody.
>
> And when i debug the firmata, for every single detected output, i have a
> message like these
>
> DEBUG: 144
> DEBUG: 4
> DEBUG: 0
> DEBUG: 144
> DEBUG: 4
> DEBUG: 0
> DEBUG: 144
> DEBUG: 0
> DEBUG: 0
> DEBUG: 144
> DEBUG: 0
> DEBUG: 0
>
> can anybody tell me what these messages means? is my system working
> correctly?
>
> many thanks in advance.
>
>
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