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[callagga]

Hi,

Anyone know of a European alternative for the Firecracker CM17A (i.e. that works on 433MHz)

thanks

[aussie mate]

The 240v 433Mhz alternative for the Firecracker module is the CM19 Computer Interface controller.

 - see http://www.envioustechnology.com.au for more information.

There are two other modules that you may want to investigate:
X10 2-Way Interface Module
V572AE RF Transceiver Interface

Also - when you say European - which country do you mean?

[callagga]

Australia actually    but the term European I thought might be better understood - I'll have a look at those now

[callagga]

Actually the CM19 isn't the same as it is USB not the DIN connector type - the background was (that I didn't provide) is that this was for a home Arduino project where I need to connect the pin outs from the Arduino to a CM17A equivalent - so therefore the CM19 wouldn't help me no doubt

I can't quite tell what the interface wiring would be for the X10 2-Way Interface Module (XM10) is really? (at http://www.envioustechnology.com.au/products/product-detail.php?ID=10)

Note sure re pin out to control the  V572AE RF Transceiver Interface either however it seems much more expensive than a CM17A (http://www.smarthome.com.au/p--X10+RF+Transceiver+Interface+Long+Range-12.html)?

[Brian H]

The CM17A is a serial controlled X10RF transmitter only.
ftp://ftp.x10.com/pub/manuals/cm17a_protocol.txt

The V572 is a receiver only though all 16 house codes and unit codes.
The V572 interfaces to the power line through a TW523 here in the US or a XM10 for international customers.

The XM10s manual does show its connections. It is definitely not RS232 or TTL levels. It is a set of Optoisolated signals.

This is for our TW523 but may give you some added information on the XM10, though I believe one of the International sites has the protocol manuals also for the XM10
ftp://ftp.x10.com/pub/manuals/technicalnote.pdf

[callagga]

thanks Brian - I'll need to look into this more closely now

[Brian H]

One thing I forgot. The V572 only uses the 9 pin serial connection to configure it to what addresses it transceives. In some cases the user may want to block a set of addresses from being processed.

http://www.wgldesigns.com/v572.html
http://www.wgldesigns.com/v572_specs.html
The spec sheet shows the US 310 MHz. so just substitute 433.92 MHz. in you thoughts.

TW523 or XM10 are real simple interfaces. The computer or microcontroller has to do all the encoding and decoding the X10 signals.

[Charles Sullivan]

The OP needs to understand what all these mentioned devices do and don't do.

As Brian has stated, the CM17A is only an RF transmitter.  It has no receiving capabilities.  Interfacing to it is relatively simple, requiring only toggling two input lines in an encoded pattern as described in X10's published document.  However I've never received any information suggesting it was ever produced in a 433.92MHz version.

The CM19 is both an RF transmitter and RF receiver, but it is a USB device and needs a driver to operate.  X10 hasn't published a protocol document for it and the existing open-source driver (for Linux) were developed by reverse engineering.

The other devices mentioned are transmitters of powerline X10 signals, not RF X10 signals.