hey
ok, down to the nitty gritty, I am not looking for completed circuit diagrams, I do not expect you to do all the work for me, and I’m not a ******* (lol, always a good thing not to be).
What I am looking for if possible, is some general help, ie Pointing me in the right direction to find the appropriate information, links if possible to relevant, personal experience etc.
Ok, my idea is that I will eventually have a device, that you can Bluetooth a music file to (hoping to have some sort of Bluetooth menu, with a few options, ie a running timer for how long the file is to be played for, ie. 5,10, 20 seconds etc, whether to delete the current file, upload a new file, volume level (1,2 or 3), etc) and that can play the file/snippet of file when a set condition is met (probably will be a jumper shorted etc).
I want to make 2 types of this, 1 which is portable, obviously can be bigger, but can take a couple of C batteries, the other which is powered via 110-240v mains, to which would require a PS, but may look into that aspect a little later.
So, the most obvious things that are required are;
• Bluetooth control somehow, was thinking zigbee. Had heard some good reviews about them.
• Flash memory for 1 song (thinking maybe a 8mb chip)
• Audio converter ?? to read the information from flash and convert to actual song
• Timing circuit (probably a 555 crystal or something)
• Small amplifier and speaker
• And main cpu for controlling all functions in right order.
• Possibly power supply from either 110 or 240, circuit switched so not a big and bulky unit.
I’m trying to keep the size of this unit quite small, for convenience sake, when I say small, about 7cm wide, 3-4 deep and 15-20 tall.