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new to prop

blind faithblind faith Posts: 2
edited 2008-08-27 18:46 in Propeller 1
i just received the prop rpm it uses serial port communication but i cant seem to get the software to recognize that there is a prop plugged in. i have 6v and the serial plug attached and the serial port is on com port 1 on my computer. when i go to run identify hardware it says there is no propeller plugged in. i'd appreciate some help been banging my head off the wall.

Comments

  • Erik FriesenErik Friesen Posts: 1,071
    edited 2008-08-23 12:09
    Have you checked voltages with a multitester?

    Is there a reset button that might be sticking?
  • Mike_GTNMike_GTN Posts: 106
    edited 2008-08-23 12:32
    Hi Blind Faith,

    Welcome to the Propeller!

    Check to make sure your serial comms cable has these connections (with a multimeter, or even a buzzer and battery)

    Prop RPM Board
    > PC end (9 pin 'D' type)

    Pin 2 (RX) Pin 3 (TX)
    Pin 3 (TX) Pin 2 (RX)
    Pin 4 (DTR) Pin 4 (DTR)
    Pin 5 (Ground) Pin 5 (Ground)

    In other words you need a crossover cable and not a straight through cable.

    Hope that helps you.

    With regards

    Mike.
  • Paul BakerPaul Baker Posts: 6,351
    edited 2008-08-26 17:00
    Blind Faith,
    Did you ever get your issues resolved?

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
  • blind faithblind faith Posts: 2
    edited 2008-08-27 15:46
    thanks i had been using a straight thru cable from my plc, cut it to swap the wires and it works!!! now if you'd be able so suggest a good book to learb from or maybe tutorials. it start me off on the right foot, been doing plcs for so long that the text based programming is going to take some getting used to.
  • Mike HuseltonMike Huselton Posts: 746
    edited 2008-08-27 15:55
    Ladder Logic rocks!

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    JMH - Electronics: Engineer - Programming: Professional
  • Paul BakerPaul Baker Posts: 6,351
    edited 2008-08-27 17:40
    blind faith said...
    ·now if you'd be able so suggest a good book to learb from or maybe tutorials. it start me off on the right foot, been doing plcs for so long that the text based programming is going to take some getting used to.
    Sure, theres the Propeller Education Kit Labs, SPIN CODE EXAMPLES FOR THE BEGINNER,··Assembly Code Examples for the Beginner,· Machine Language Tutorial·and Propeller Cookbook. There are also tidbits in the Propeller Wiki·and of course there's section 3 of the Propeller Manual. If you are into graphics the Hydra Book is a very good reference on how the Propeller does graphics

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.

    Post Edited (Paul Baker (Parallax)) : 8/27/2008 5:47:16 PM GMT
  • Mike HuseltonMike Huselton Posts: 746
    edited 2008-08-27 18:46
    I would also add my my voice to the recommendation of the Hydra Book.
    This, along with the Parallax course ware, makes for an excellent foundation for self-exploration of the myriad views of the same subject matter from varying perspectives.

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    JMH - Electronics: Engineer - Programming: Professional
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