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Re: Firecracker and USB-Serial

Subject: Re: Firecracker and USB-Serial
From: nobody@xxxxxxxxxxxx (Dave Houston)
Date: Tue, 12 Oct 2010 21:37:11 GMT
Newsgroups: comp.home.automation
References: <isw-DA72EE.21034411102010@[216.168.3.50]> <i925vs$o50$1@xxxxxxxxxxxxxxxxxxxxxxxxxx>

The Firecracker has only a small PIC, using a couple of its pins for a
software UART - there is no level converter chip so 5V is just fine. There
are current limiting resistors in its send/receive lines so standard RS-232
voltages are OK, too as the PIC has clamping diodes on its inputs.

"petem" <petem001@xxxxxxxxx> wrote:

>Dont know if the firecracker need more then 5 volt, but if I am right
>the voltage for rs232 are supposed to be -12 to +12 volts..not 0 to 5 >volts..

References:
- Firecracker and USB-Serial
  - From: isw
- Re: Firecracker and USB-Serial
  - From: petem

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