Re: Rosetta progress report WAS: translator question

["BruceR" <br@xxxxxxxxxxxxxxxx>]

I deleted the email already but IIRC it was about $150.

From:Dave Houston
nobody@xxxxxxxxxxxx

> It will be interesting to learn the price.
>
> "BruceR" <br@xxxxxxxxxxxxxxxx> wrote:
>
>> Sounds excellent! BTW, I received and email from smartproducts
>> announcing their Zwave/X10 translator today:
>> http://www.smartproducts.us/Zwave.htm  scroll down.
>>
>> From:Dave Houston
>> nobody@xxxxxxxxxxxx
>>
>>> I have a circuit board layout that I think will work. I'll stare at
>>> it for a few more days. I usually find that causes traces and solder
>>> pads to move around mysteriously ending up in locations where I
>>> don't recall placing them. I'll send it off this weekend and should
>>> have it about 2-3 weeks after that. In the meantime I can start on
>>> the code using a BX24-AHT board
>>>
>>> Mouser does not stock any through hole RTC chips so I will use SMT
>>> and will forget about using any of the supported serial devices for
>>> the RTC backup. This will save a bit of code since there will only
>>> be the one chip to interface with. I'll leave the choice of
>>> supercapacitor to the user. Mouser stocks 3 that will fit the space
>>> I've alloted. They will provide anywhere from 2-3 days to more than
>>> a month backup for the RTC chip.
>>>
>>> I've settled on I²C for the RTC chip and will use the ZX-24's
>>> hardware I²C implementation which can run at 410kHz. The I²C bus can
>>> support another EEPROM chip should it prove necessary to increase
>>> the space for user data.
>>>
>>> To use Rosetta with any of the controllers that normally use a TW523
>>> (or PL513), the newly liberated TW523 (or PL513) will need to be
>>> attached to the other TTL port in order to supply a ZC signal for
>>> Rosetta and the controller (e.g. HAI, JDS, Ocelot). The controller,
>>> Rosetta and TW523 (or PL513) will share the ZC signal. I think the
>>> ZX-24 will be fast enough to have the controller receive pin follow
>>> the ZX-24 receive pin which will be listening to the TW523. This
>>> way, there will be no delay in the controller receiving what's on
>>> the powerline (or at least what the TW523 is willing to divulge on
>>> that topic). When the controller transmits, there will be a delay as
>>> Rosetta will need to see a complete code before deciding if it needs
>>> translation or merely needs to be sent to the powerline via the
>>> TW523 (or PL513). This should allow for sending/receiving a mixture
>>> of X-10, UPB and 2414S powerline commands
>>>
>>> Rosetta will also be able to program delays (~2ms minimum, infinite
>>> maximum resolution) as needed between signals it sends to the
>>> powerline.