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Help on OEM Design — Parallax Forums

Help on OEM Design

Aaron193Aaron193 Posts: 27
edited 2007-10-10 15:52 in BASIC Stamp
Hello
I am interested in designing my own OEM Basic Stamp for various applications. Does anyone know the minimum component requirements for getting an interpreter to run correctly? Do I need any other components other than an oscillator, an interpreter, and an EEPROM?
Also, is it possible to "trick" the Basic Stamp Editor into thinking there is a stamp connected, when there is just an EEPROM connected? I had the thought that the interpreter could be on one board with a slot/socket for an EEPROM that would be separately programmed. Is this possible?

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2007-10-08 23:41
    1) Download the Stamp Manual from the Parallax website. It has the schematics of the various Stamp manuals. Also download the documentation on the OEM Basic Stamp. You need a resonator or crystal, the EEPROM, and the interpreter chip along with a few assorted resistors and capacitors. The resonator usually needs some load capacitors. The EEPROM needs pull-up resistors. You need some bypass/filter capacitors for the interpreter, etc. To do the programming, you also need a few resistors and capacitors as shown in the manual, mostly to protect the interpreter chip from the RS232 signal levels and to sharpen up the DTR pulse used for resetting the Stamp.

    2) You can't "trick" the editor. The interpreter chip is what actually does the EEPROM programming. You can make up a special OEM Stamp Board with an EEPROM socket and program EEPROMs there and transfer them to the other boards. Just put a 4-pin header on your boards for Parallax's USB2SER adapter and use that for programming. There would be no programming components other than the header on the OEM boards.
  • RDL2004RDL2004 Posts: 2,554
    edited 2007-10-09 00:01
    BS2 OEM Lite schematics

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    - Rick
  • Aaron193Aaron193 Posts: 27
    edited 2007-10-10 00:40
    Thanks, I appreciate it. I guess I can't cut corners! (ha-ha!)
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-10-10 15:52
    What do you mean? The schematics posted above removed several of the un-necessary components for a running system. Several customers use that schematic and repogram their units through a separate board and moved the programmed EEPROM into a socket on the target device. Take care.

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    Chris Savage
    Parallax Tech Support
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