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Reset button

JeronimoJeronimo Posts: 3
edited 2007-08-21 00:18 in BASIC Stamp
I want to reset the Board Of Education using a push button not attached to the board can this be done without modifying the board?
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Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-08-20 22:55
    Unfortunately, no...You would need to connect to the same pins the RESET Button uses to connect it externally. Take care.

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    Chris Savage
    Parallax Tech Support
  • Twisted PairTwisted Pair Posts: 177
    edited 2007-08-20 23:12
    Hello Jeronimo,

    You will have to De-solder and remove the exsiting board switch from the board and add two wires to the board where the NO pins were soldered to the board. You can re-use the switch that you removed from the board. Another choice would be to simply solder two wires to the board (bottom of board), at the exsiting NO switch pins, and attach another switch to the end of the wires that you just soldered on. Having two switches will be ok and you can use either one of the switches for a re-set....

    Twisted Pair....

    Post Edited (Twisted Pair) : 8/21/2007 12:02:11 AM GMT
  • JeronimoJeronimo Posts: 3
    edited 2007-08-20 23:21
    Is there any way to start to run a program with a push button?
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-08-20 23:26
    What do you mean?

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    Chris Savage
    Parallax Tech Support
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-08-20 23:34
    Cross-Post in Robotics Forum removed.

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    Chris Savage
    Parallax Tech Support
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2007-08-21 00:14
    Jeronimo,

    Here's a circuit that will do what you want. It plugs into the BOE's DB9 serial connector. The switch is a SPDT push-button. When pressed, it connects +9V to the DTR pin (pin 4) of the DB9 plug, which resets the BASIC Stamp. When released, it grounds pin 4 to pin 5, discharging the DTR caps on the BOE, priming them for another reset. Be sure to use a switch that's rated "break-before-make" (most are), else you'll short your battery momentarily every time you push or release the button.

    This will work, so long as you don't need the serial port for anything else.

    -Phil
    BOE_reset.gif
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  • D FaustD Faust Posts: 608
    edited 2007-08-21 00:18
    Couldn't you just make a pushbutton the temporarily disconnects power from the board, thus resetting it? This would involve two 9V battery connectors and a normally closed button in between. If you arew running from a battery pack you could buy a 2.1mm jack and plug and wire the nc button in between.

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