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kellerza / python-ids-alarm

Python library to interface IDS Alarm panels
MIT License
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Hookup #1

Closed AndrewMoneronGenex closed 5 years ago

AndrewMoneronGenex commented 6 years ago

Hi

I also want to play around with my IDS. Did you manage to inject data in to bus?

Can you share your device hookup? Is it necessary to use the MAX485 or can the FTDI cable be connected directly to the alarm D+ D- bus.

kellerza commented 6 years ago

Hi @AndrewMoneronGenex You will need a RS485 driver, since the differential levels might not be enough to trigger your FTDI device (or might be too high, but I think this is unlikely)

I used a MAX485E DIP8 package & connected directly to the data bus that goes to the keypads (D+/D- on the IDS?). The DIP package should be easy enough to attach to the FTDI board:

FTDI MAX485E IDS
GND RE & GND
Rx RO
Tx DI
5V DE & VCC
. B D+
. A D-

In order to inject data into the bus you will likely spoof yourself as one of the existing keypads.