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Making my own carrier board? — Parallax Forums

Making my own carrier board?

AltarCrystalAltarCrystal Posts: 10
edited 2008-05-19 00:50 in BASIC Stamp
Now, I'm no EE, but I was looking at the schematics of the actual stamp, and what exactly would come between the power supply and the stamp? I mean, the stamp has a voltage regulator, correct (I have a BS2e, for reference), that regulates anything from 5.5v to 12 down to 5v. Then, can I just wire a serial port to pins 1-4, and power the sensors with the regulator out? Sorry if this is a dumb question, but I just got my first stamp yesterday. But, wouldn't this allow me to program and use the stamp without ordering a carrier board?

Comments

  • PJAllenPJAllen Banned Posts: 5,065
    edited 2008-05-17 16:43
    Take a look at the schematic at the link.·

    Note J2, C3, and C4.

    http://www.parallax.com/Portals/0/Downloads/docs/prod/schem/supercarrierbd.pdf


    Post Edit -- The Stamp's on-board regulator supplies, in a practical sense, only enough current for itself; it doesn't have a lot more "oomph" for off-board circuitry.· Ergo, the external 5V (Vdd).

    And, there is a jumper from pin 6 to pin 7 on J2 which is real important, too

    Post Edited (PJ Allen) : 5/17/2008 4:50:58 PM GMT
  • AltarCrystalAltarCrystal Posts: 10
    edited 2008-05-17 18:36
    Ok, another quick question. Again, I'm a CS student, not an EE, so some of these question might sound dumb tongue.gif

    What is J3 on the schematic? I was looking at this earlier today too, but after a bit of study it's making more sense. Is it the circuit that's pictured up above in the upper right hand corner?
  • ForrestForrest Posts: 1,341
    edited 2008-05-17 19:21
    J3 on the schematic is for programming a BS1. Since you're using a BS2, you don't need J3 on your board. The circuit in the top right corner is the DC voltage regulator circuit.
  • RickHRickH Posts: 40
    edited 2008-05-17 19:42
    All you need to program your chip is a DE-9 Socket wired as shown just to the BS2 and 9 Volts (Recomended is 7.5V) on pin 24.
  • AltarCrystalAltarCrystal Posts: 10
    edited 2008-05-18 23:58
    Alright, sounds good! I ran by Radio Shack and got what I needed...here's hoping I don't blow my BS2 :P
  • Rob311Rob311 Posts: 83
    edited 2008-05-19 00:50
    I was a 2nd year Mechanical when I first started playing with the stamp. if i didn't blow it up, no one will.
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