zhi_hong
CR2032 Battery
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« on: March 25, 2008, 10:25:02 PM » |
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1st tym lng po gagawa ng pcb... sadya b n u have to on & off the circuit para iilaw ang next led sa proj n 2? http://www.kpsec.freeuk.com/projects/heart.htm sa multisim & breadboarding namin inoon-off pa namin para umilaw yng next |
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The Philippine Electronics and Technology Forum
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« on: March 25, 2008, 10:25:02 PM » |
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glutnix_neo
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Developing code for "humans" since 2004
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« Reply #1 on: March 26, 2008, 08:23:57 AM » |
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tingin ko bro hindi na kailangan, yung LM555 ang nag-gegenerate ng pulse na each time my pulse na pumapasok sa next IC, dapat gumagalaw ng yung ilaw.
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spidamang
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« Reply #2 on: March 26, 2008, 08:40:23 AM » |
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textbook 555 astable at what seems to be 15 hz. No need to on/off the switch. Sa multisim, try to change the max time and step time and always clear intrument data before simulating. Baka dun lang.  Sa bread board, try separating the 555 timer circuit and verify if it outputs the desired square wave with an oscilloscope.  tapos manually trigger the counting sa 4017. Divide and conquer hehehe.  Hope this helps. |
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Confidence: The feeling you have before understanding the situation.
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zhi_hong
CR2032 Battery
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« Reply #3 on: March 26, 2008, 08:55:18 PM » |
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the ic we used is NE555. iba b xa sa LM555? or all 555 ic's are the same?
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mArKhAo
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point and shoot
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« Reply #4 on: March 26, 2008, 08:59:10 PM » |
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ung NE at LM parang tanda lng siya ng mga gumawa sa kanya, but pareho lng po yung functions nya...
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cut my heart out, for a souvenir....
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krayziebone
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« Reply #5 on: March 26, 2008, 09:02:42 PM » |
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the ic we used is NE555. iba b xa sa LM555? or all 555 ic's are the same?
manufacturer code po yang first two characters.. |
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zhi_hong
CR2032 Battery
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« Reply #6 on: March 26, 2008, 09:55:22 PM » |
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ah ok tnx po. umiilaw lng kc ng sunodsunod ung ginawa namin kng inoon-off. tama naman lahat ng connections, bka cra lng tlga ic namin  |
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mArKhAo
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point and shoot
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« Reply #7 on: June 30, 2008, 07:10:43 AM » |
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anu ba po yan? astable o mono?
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cut my heart out, for a souvenir....
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RaffT
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more on R-n-D
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« Reply #8 on: June 30, 2008, 08:24:36 AM » |
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ah ok tnx po. umiilaw lng kc ng sunodsunod ung ginawa namin kng inoon-off. tama naman lahat ng connections, bka cra lng tlga ic namin baka yung output pulses ng 555 IS NOT driving the CD4017 counter?? try to check that.... tiningnan ko link bigay mo, 555(clock) 4017(counter) LEDs for display.... check mo pin#3(555) going to CLK input ng 4017... edit- sa configuration palang ng 555, ASTABLE yan.. BUT if ever , di pa rin mag "run" and display, malamang sira na yang 555 nyo... |
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Learning is CooL! BEAM robotics/DIY UCD180/PSP/AC wtmtr/digiESRmtr/PICkit™2 clone/SGTC/SSTC/DR-SSTC
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mArKhAo
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« Reply #9 on: June 30, 2008, 08:26:54 AM » |
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hehe.. may link pala.  |
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cut my heart out, for a souvenir....
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wakamakulit
Size AAA Battery
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« Reply #10 on: July 01, 2008, 01:43:58 AM » |
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hehe.. may link pala. muntik na ako malaglag sa upuan ah....hehe....ngayon mo lang napansin na may link....hehe...peace!! @ zhi_hong try mo disconnect yung connection between pin 3 of 555 timer at pin 14 ng up conter mo. lagyan mo ng LED sa pin 3 ng 555 tsaka mo tignan kung ano mangyayari sa LED, dyan m makikita kung gumagana yung pulse ng astable timer mo. talaga bang 1uF yung capacitor mo? try mo 10uF den yung 47k resistor m eh gawin mong trimmer, para ma-adjust yung speed ng running lights mo.... |
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mArKhAo
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« Reply #11 on: July 02, 2008, 12:41:03 AM » |
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hehe.. sorry naman... |
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cut my heart out, for a souvenir....
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wakamakulit
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« Reply #12 on: July 04, 2008, 08:57:18 PM » |
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nawala na yung thread starter, baka gumana na yung project...hehe
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maldihtah13
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Everyday is a learning process so try to learn ;D
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« Reply #13 on: July 05, 2008, 08:58:49 AM » |
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running lights lang nman ito
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paranz
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« Reply #14 on: July 06, 2008, 03:42:29 PM » |
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1st tym lng po gagawa ng pcb... sadya b n u have to on & off the circuit para iilaw ang next led sa proj n 2? http://www.kpsec.freeuk.com/projects/heart.htm sa multisim & breadboarding namin inoon-off pa namin para umilaw yng next very slow kasi ang simulation sa multisim, so you might think na isang LED lang ang iilaw. try simulating it using proteus, para near real-time ang simulation. Or build the actual circuit sa breadboard |
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paranz
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« Reply #15 on: July 06, 2008, 07:10:29 PM » |
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i simulated the circuit in proteus. works perfectly  |
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The Philippine Electronics and Technology Forum
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November 11, 2009, 11:49:43 AM
