ON 20070118@3:38:05 PM at page: http://www.piclist.com/piclist/pcbcontest.htm#39096.2429050926 James Newton[JMN-EFP-786] published post 39096.2429050926 I've built a WAV player with USB interface. It's based on Microchip parts (18F2550, DAC SPI) and a 8Mb SPI Memory from ST.
Schematic is rather easy: it can work USB-controlled (for upload and/or playing WAV files, using a simple software) or stand alone (by means of switches). It can store (currently, project was first developed in fall-2004) up to 1min circa of 22050 mono WAV files, or a double quantity if sampling rate is reduced to 11025. Of course, greater storage can be provided, but it's useful right now as a "music player" to be contained into toys, or as a "message announcer" on automatic doors or alike.
Future improvements may mean use of SD Memories, and support of USB MassMemory protocol, to allow for the player to be seen as a standard Pen Drive on PCs. |Delete 'P-' before: '' but after: 'aishah_satirical@yahoo.com asks:

Hi there. i am a new user of PIC. i would like to know how can PIC retreive data from a PC monitoring every 15 minutes? do i have to use timer..? and how to program it. Tq

' ON 20070124@11:05:30 PM at page: http://www.piclist.com/piclist/questions.htm#39105.9224189815 James Newton[JMN-EFP-786] removed post 39105.9224189815 |Delete 'aishah_satirical@yahoo.com asks:

Hi there. i am a new user of PIC 16F84. im doing solar panel project.i would like to know how can PIC retreive data from the solar panel and send it to PC monitoring every 15 minutes? do i have to use timer..? and how to program it. Thanx in advance.