Hi Xiao Fan, Hope you have been getting along well. Right now I'm working on a new mouse design during breaks from studying while preparing for my end of year exams. Still bit unsure whether to proceed or not though as the motors are very expensive (about 200 each with encoders, partially because I buy so few at a time.) Just like to check with you, what kind of capacitor and resistor sizes would you have? Would you happen to have a low current SMT Led that I could use as a power indicator? Its not really critical but good to have as an indication that power is going to the mouse. ------------------------------------------------------------------------ Daniel Chia "Genius is one percent inspiration and ninety-nine percent perspiration." - Thomas Edison E-mail: danielcjh@yahoo.com.sg MSN: danstryder01@yahoo.com.sg ICQ: 37878331 ------------------------------------------------------------------------ Send instant messages to your online friends http://asia.messenger.yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist