I’m exploring JMRI / DCC++ for control of a future layout. To date all I have are an Arduino Mega with motor shield and a Mac. I’ve plugged in LEDs with current limiting resistors to digital outputs 5, 6 and 7 and a jumper from digital 4 to digital pin 13 (per the DCC++ video). All power is from USB at this point. My first Tsunami decoder is back-ordered so only using Panel Pro at this point. PROBLEMS: 1) Seems there should be some way to define and store output configurations without manually sending Arduino packets/commands. The only way I’ve been able to turn on Arduino Mega LEDs on output pins 5 6 7 is with raw commanding through JMRI/DCC++ : 1) Z 5 5 1 2) Z 6 6 1 3) Z 7 7 1 Then if I setup the Light table to have 5 6 7 outputs configured, and setup the Turnout table for outputs 5 6 7 (edited to have FEEDBACK = EXACT), I can flip LEDs with clicks on the Cmd Column of the turnout table. 2) I do a PanelPro File/store/store configuration.. but after a quit/restart, all my previously defined lights and turnouts are gone. I also did an E command to the Arduino to store settings to EPROM in case there was a handshake upon restart before the outputs/turnouts would be displayed – no luck. 3) Clicking on the invert button in the turnout table doesn’t change the state commanded or the LED illumination for the corresponding output pin. I keep re-reading JMRI/DCC++ documentation but can’t make much progress. Either I’m getting old faster than I thought or maybe I should consider a JMRI alternative to commanding DCC++ outputs – hope I’m missing something basic.