Shop OBEX P1 Docs P2 Docs Learn Events
please please please HELP ASAP — Parallax Forums

please please please HELP ASAP

tony_89tony_89 Posts: 14
edited 2010-07-30 19:38 in Propeller 1
I have to finish this project tonight. I am starting new job tomorrow i modified the tool chest i am taking to work to unlock the doors via RFID. It works great on my propeller professional development board, so i put it on a bread board it worked great.... until i shorted the 3.3 volt power to the 12volt power. oops!!! confused.gif Pulled the board and made new one just like the one that i had that worked perfect only difference is the new board has sockets for eprom and propeller. It loads the program just fine but then it dose nothing i have not changed the code. i have double checked all solder connections double checked to make sure all the pins were getting proper connection tried new propeller chip nothing works any suggestions all pins are getting proper power. I will check back in an hour please help me. sad.gif

Comments

  • hover1hover1 Posts: 1,929
    edited 2010-07-11 20:05
    Perhaps you also fried the RFID module. You didn't say which pin on the 3.3 volt regulator you hit with the 12 volts. 12 volts to the RFID module is probably not a good thing either.

    Jim
    tony_89 said...
    I have to finish this project tonight. I am starting new job tomorrow i modified the tool chest i am taking to work to unlock the doors via RFID. It works great on my propeller professional development board, so i put it on a bread board it worked great.... until i shorted the 3.3 volt power to the 12volt power. oops!!! confused.gif Pulled the board and made new one just like the one that i had that worked perfect only difference is the new board has sockets for eprom and propeller. It loads the program just fine but then it dose nothing i have not changed the code. i have double checked all solder connections double checked to make sure all the pins were getting proper connection tried new propeller chip nothing works any suggestions all pins are getting proper power. I will check back in an hour please help me. sad.gif
  • localrogerlocalroger Posts: 3,452
    edited 2010-07-11 20:11
    Yeah, everything in the circuit that was connected to the 3v3 supply is now suspect.
  • tony_89tony_89 Posts: 14
    edited 2010-07-11 20:14
    I replaced the hole board power regulators capacitors and everything else except rfid. The first thing the code dose is turn on an led but the led never comes on. I tried making a new code that only turns on the led still nothing led is good i tried different pins still nothing why would it accept the program then do nothing i dont under stand.
  • tony_89tony_89 Posts: 14
    edited 2010-07-11 20:16
    I completely replaced everything
  • tony_89tony_89 Posts: 14
    edited 2010-07-11 20:17
    Including the board it was all built on
  • tony_89tony_89 Posts: 14
    edited 2010-07-11 20:33
    Ok just realized that the code wrote that only tested the led said outa [noparse][[/noparse]25] :=1 it should have a repeat before The outa so that the led stays on. I added a repeat to the code now led works but rfid dose not idea.gif sorry i am an idiot i dont know how the 12 volts got to the rfid i thought i had it protected with resistors and it was on the 5 volt reg not the 3 volt but some how it still got it. I will post video later after i fix this i gotta dig up an rfid reader somewhere thanks so much for your help i have been trying to solve this problem for about 5 hours now. if anyone knows where i can get a wrist bracelet rfid card that will work with the parallax rfid reader post a link please. thanks again for your help
  • BasicstampkidBasicstampkid Posts: 1
    edited 2010-07-30 19:26
    yep, those repeats are necasary... much unlike pbasic
  • Duane DegnDuane Degn Posts: 10,588
    edited 2010-07-30 19:38
    tony_89,

    You need a repeat somewhere in your program·so it doesn't end, but "outa[noparse][[/noparse]25] := 1" only needs to be called once.· The LED should stay on until you turn it off or the program ends.

    Duane

    Edit: fixed typo
Sign In or Register to comment.