brainfarth
Newbie level 2
I started a new project: Groundhog day clock. Their version uses a Adafruit xf sound board, where as mine will be using the cheapest MP3 player I could find on Ebay. The problem that I will encounter is pressing play on the player. There is a 12v power trigger going to the board, from which I can tap into and drop the voltage to 5v for the player. So when the player turns on, I have to pause for about 5 seconds for it to boot up before hitting the play button. This is where I hope to use some variant of the 555 time delay circuit. But what I'm wondering is how to stop the trigger after a few milliseconds. Any ideas?
