[Dr_C2]

Some more details…

First the reason why there are multiple signal options:

1/ the IR LED signal input enables the ID display to be driven directly by SSD, D132 or SCX-A decoders. In each case the IR LED signal carries ID information which is decoded to provide the ID display read-out. This automatically ensures the ID display read-out matches the decoder ID.

2/ the UART signal enables the ID read-out to be programmed with the appropriate ID display read-out. This approach is manual but will enable the ID displays to be used in conjunction with O2 wireless decoders. Care will be required to ensure the display read-out is programmed over UART to match the decoder ID.

3/ the I2C and SPI options require a serial data-bus interface with the decoder which can enable additional display functions as well as automatic direct ID read-out. This makes the two digit displays very versatile with applications well beyond simple screen displays. That said, these are fast industry standard serial data bus configurations and will work extremely well for decoder to windscreen read-out applications. All my DPR decoder designs (for SSD and wireless) over the past three years have included I2C/SPI data-bus connectivity via a flat flexible cable (FFC) interface.

And, just to add, hardware using all of these signal methods is in development i.e. included in the two board designs shown above.

Hope all of above makes good sense.

c