Rentron Encoder

[Nitrous]

All transmitter operate on the same frequency. The regulations require that the duty cycle be very low, depending on the band from 0.1 to 10%.

So, as long as only one trasnmitter is ON, there is no problem. That's why you can unlock your car, when all the cars and remote door controlers are on the same channel.

Regarding the SMD or DIP case, I suppose you have to call Bruce and ask him.

Ioannis

Is rentron still operating? I've called a few times and only get voicemail. No response to an email.
I'm off to Washington, DC next week and would like to order a few CIP-8 chips to collect on Friday but time is running out. May have to go with PT2262/72 chips.
Doug

[Ioannis]

I cannot answer for Rentron, sorry. I do not know why you got no reply.

Hope you do soon.

Ioannis

[Nitrous]

I just found an article in Elektor describing the use of an encoder chip with 4 data in lines with 7 transmitter ID's.
they used three of the data lines in a binary code arrangement to identify each transmitter. The 4th data line is set up as a low battery signal. So, D0,D1,D2 all low is 0, D0,D1 low and D2 high is 2 etc.

The receiver side of things uses a BCD to 7 segment LED display to report the transmitter ID. My question comes from the use of a latching setup on the BCD chip. Will it have to be reset manually to change the display or will a new signal from another transmitter change the display?

Thanks guys,
Doug

[Ioannis]

Depends on what the programmer has done.

Ioannis

[Nitrous]

Depends on what the programmer has done.

Ioannis

Do you mean the programmer of the BCD chip?
There doesn't seem to be any MCU to program.

On a side note, Bruce sent me an email but of course now, I've got the option of a simple 7-segment display to report the reporting transmitter rather than using 6 colored LEDs attached to D0-D5 data lines.

Options are though!

Doug

[Ioannis]

If it is a simple BCD decoder, the data is latched by a special pin. Latch or Clock or something similar.

So, I guess it will display the new value when new data are received by the above signal derived from the receiver.

Ioannis