http://tech.groups.yahoo.com/group/AVRButterFly/ AVR ButterFly & Beginners Group Mon, 02 Nov 2009 02:57:27 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/991 http://tech.groups.yahoo.com/group/AVRButterFly/message/991 This 90 byte program produces White Noise from the ButterFly Speaker. I based my random number generator similar to the Linear Congruency Algorithm. You can Tue, 27 Oct 2009 23:53:59 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/990 http://tech.groups.yahoo.com/group/AVRButterFly/message/990 This versions of the 90 Hour Clock uses the more accurate 32,768Hz on-board crystal. By using a prescaler/divider of 128 and waiting for the clock to overflow Tue, 27 Oct 2009 01:10:49 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/989 http://tech.groups.yahoo.com/group/AVRButterFly/message/989 [FONT=Courier] Show time on 6 character LCD screen upto 90 hrs. [code] ;--------------------------------------------------; ; CLOCK.ASM for AVR BUTTERFLY Mon, 26 Oct 2009 23:02:46 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/988 http://tech.groups.yahoo.com/group/AVRButterFly/message/988 We set the system clock to 2MHz (the speed Butterflys are as shipped). If we set the timer0 prescaller to /1024 then use the overflow mode, that will give us Mon, 26 Oct 2009 01:18:54 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/987 http://tech.groups.yahoo.com/group/AVRButterFly/message/987 ;--------------------------------------------------; ; INTERUPT_TIMER.ASM for AVR BUTTERFLY ; ; AUTHOR: DANIEL J. DOREY (RETRODAN AT AVR FREAKS) ; Thu, 22 Oct 2009 02:42:00 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/984 http://tech.groups.yahoo.com/group/AVRButterFly/message/984 This demonstrates the use of timer-0 in CTC mode that polls a flag when timer reaches a pre-determined amount over-and-over to produce different sounds. Tue, 20 Oct 2009 21:58:13 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/983 http://tech.groups.yahoo.com/group/AVRButterFly/message/983 Program shows use of timer 0 as a wait-for timer in Assembler for the AVR Butterfly/Atmega169 to emit a tone on the speaker. (approx 35 bytes) Tue, 20 Oct 2009 16:35:13 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/982 http://tech.groups.yahoo.com/group/AVRButterFly/message/982 Scroll a long message defined by a .db "Message." terminated with a period across the LCD screen on the Butterfly. Approx 440 bytes. Tue, 20 Oct 2009 16:34:10 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/981 http://tech.groups.yahoo.com/group/AVRButterFly/message/981 This Assembler program will display a message using 6 character chunks on the Butterfly 6 character LCD Screen. Program is approx 430 bytes. Tue, 20 Oct 2009 03:34:07 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/980 http://tech.groups.yahoo.com/group/AVRButterFly/message/980 Small collection of sound effects for the AVR Butterfly using assembler. Program is approx 210 bytes. Tue, 20 Oct 2009 03:30:51 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/979 http://tech.groups.yahoo.com/group/AVRButterFly/message/979 Waits for joystick to move, then beeps and displays the direction the joystick was moved on the LCD Display. ;------------------------------------------; ; Mon, 19 Oct 2009 21:18:26 GMT retr0dan http://tech.groups.yahoo.com/group/AVRButterFly/message/977 http://tech.groups.yahoo.com/group/AVRButterFly/message/977 This is a simple assembly language program (approx 90 bytes) that plays the classic music used in classic horror and sci-fi films. The frequency is based on Thu, 20 Aug 2009 20:25:28 GMT eng_hossam123 http://tech.groups.yahoo.com/group/AVRButterFly/message/961 http://tech.groups.yahoo.com/group/AVRButterFly/message/961 what do you know about photoresistor element? information about this element in this link http://electronics1000.blogspot.com/ Thu, 20 Aug 2009 04:39:31 GMT eng_hossam123 http://tech.groups.yahoo.com/group/AVRButterFly/message/959 http://tech.groups.yahoo.com/group/AVRButterFly/message/959 what do you know about memristor element? information about this element in this link http://electronics1000.blogspot.com/ Sun, 16 Aug 2009 23:06:50 GMT mahsa_smart2003 http://tech.groups.yahoo.com/group/AVRButterFly/message/954 http://tech.groups.yahoo.com/group/AVRButterFly/message/954 hi,i started avr with C couple of days ago.now i need easy projects,to right them down in codevision & stimulate in proteus.iam a beginner,please help me,mail