FSUIPC Version 4.938 is now available, and works as best as I can make it with FSX-SE. A module that allows outside programs to communicate with FSX. This version works with FSX, FSX-SE and Prepar3D. FSUIPC for Microsoft Flight Simulator X (incorporating WideFS 7). Testing has shown that unless the Serial buffer is empty, the Arduino will just sit and wait in some situations. If you run into a situation where your Arduino locks up on FSX flight start, my issue seems to have been FSX, FSUPIC, Lua sending data to the Arduino before it was ready.
