He's chillin' with Jam Master B from anywhere in his house, thanks to a Palm Pilot equipped with a radio frequency transmitter that allows him to operate his PC-based MP3 player remotely from up to 100 ft away. An RF receiver connected to the PC acquires Steve's selections from a database of 4,700 works. To keep sound quality high, Steve encoded the music with a high bit rate and connected the sound card to his stereo amplifier via a digital link.
Are you a Gadget Freak? Allied Electronics would like to send you on a shopping spree of up to $500 on its website at www.alliedelec.com/gf.asp. E-mail Design News your proposed project (must incorporate electronic components and involve sensing, motion, timing, or networking elements) to dnonline@reedbusiness.com, along with a description of how it works, and a parts list.
If your project is selected, you'll receive the shopping trip of up to $500 and be featured in an upcoming edition of Design News.
PDA-based mp3 remote control system Parts List
Amt
Part Description
Allied Part #
1
2.0 MHz Cystal MP020
745-0114
1
9V ac Wall-mtd Transformer
928-9898
1
44 Pin PLCC Socket
978-2210
1
1.2V NiCd Battery
884-1017
1
Aluminum Enclosure
806-1872
1
Power MOSFET
273-4006
1
Schottky Rectifier
568-2475
1
Dual D Flip-Flop
263-2828
1
5V Regulator
288-1302
1
NPN Transistor
263-2064
1
PNP Transistor
263-2100
Additional parts required: Transmitter and receiver modules; CPLD IC; RS232 level converter; Voltage Regulator IC; 8-bit CMOS counter IC; 4.7 µH SMT inductor; Steve's software.
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