> I believe an original talking clock is being maintained in the
> Telecommunications Museum in Hawthorn (Australia). Third floor,
> Hawthorn Telephone Exchange.
>
>
> John
>
>
>> --
>>
>> Message: 1
>> Date: Tue, 1 Oct 2019
I finally got my FA2 yesterday. Seems to work fine, except for one thing (so
far) the screen is blinding and viewable from only straight on. I'm afraid it
won't last long in this state. According to the manual there is a programmable
adjustment for contrast but my programing skills ended with
The command $Cxx* will set the contrast. xx can be 00 to 63. Ignore the
measurement data that the FA2 sends continuously and just type over it (or
disconnect the input signal). It should respond with something like CONTCOK
if the command is accepted. Note that the value is stored in EEPROM
On Thu, Oct 3, 2019 at 12:07 AM Didier Juges wrote:
> Raspberry Pi has no display, no keyboard.
Yes, the Pi does not have a display or a keyboard, but it does have USB,
GPIO, Bluetooth WiFi and Ethernet, and separate power.
> If you add those, you far exceed
> the cost of a 7" tablet
Does a
On Thu, October 3, 2019 12:00 am, Corey Sukalich wrote:
> My question pertains to a timebase used in a Schulmerich carillon bell
> tower system from the 1990âs.
>
> The Seiko Epson RTC-72421 Real Time Clock Module (4-bit) is used, but the
> clock ends up walking to a noticeable degree (minutes)
Corey -
These Seiko Epson RTC chips can and do fail (oscillator failure or moves “out
of spec”).
These chips have a rough accuracy of ~ 1 second/day.
That level of accuracy can produce ~ 365 seconds/year (6 minutes)
Your question suggests that you are searching for a Clock with a higher
Corey welcome to the group.
As i recall those clocks absolutely drifted like that.
Regards
Paul.
On Thu, Oct 3, 2019 at 1:02 AM Corey Sukalich wrote:
> Hi all,
>
> New to the list, but have known of its existence for a while as I know
> others that have been subscribers.
>
> My question
Looking at the datasheet I'd expect finding a drop-in replacement is likely
problematic. A rather involved RTC module providing seconds out to 100 years.
(Although it looks a lot like a Seiko RTC chip I used in the late 70s.)
Emulation would probably require an FPGA approach, or one using a
