I want to add sound to my crossing gates. I have the approach from Stan (previously posted in the "IR or Optical Sensors" forum), but had some questions with regard to his post. Stan suggested that I move that discussion to a new forum, so here we are.
I purchased an MP3 player on ebay and audio amplifier card from same. In Stan's post, he shows a capacitor adder to both the player and the amp. The pictures do not provide enough detail for me to determine where the cap's should be added. If I had bought the same player & amp that Stan used, I could make a pretty good guess. I will repost the pic's of my player, and per Stan's request, I will post the ebay location of the amp I bought along with a pic.
The reason for the cap additions was never mentioned, but someone suggested it might be to improve sound quality???
Stan also suggested that I put an MP3 file on the player and see if it auto plays. I did that and it does not. I believe everything on these players is display-driven. However, Stan has never been stumped before--so we will see.
Ken
