First post, just getting started with arduinos. Have a ‘complex’ 4 digit 7 segment display board that I need to have display values that will be calculated from my Mega2560 and don’t know if it is an easier approach to try to do this through RS232 port on the display board or try to incorporate serial input. The board I have is a ETT DSP-4, the documentation is not the greatest on this, but is attached. Seems to support RS232 485 and serial, but also has MAX chips and decoder/drivers installed. Anyone ever dealt with these that could offer some advice on methodology? thanks!
ET-REM8 & ET-DSP4SEG & ET-DSP4.pdf (103 KB)
Schematic - DSP4.pdf (160 KB)