OEMBS2 Question before i buy one
Buttons are cool
Posts: 3
Hi there, i'm hoping someone will be able to help me before I order a BS2OEM. I'm prob. going to buy the kit form you solder together yourself.
I was reading the information on the OEM modules. It says this on this page :
http://www.parallax.com/html_pages/products/basicstamps/basic_stamps_oem.asp
Serial Communication
Parallax uses a minimum complement of components to effect an interface between the high levels of RS232 and the relatively low levels of TTL. Regardless of how the line levels are interfaced, there are two important things to note: the idle state of the serial input line (Sin) at the interpreter, (RA.2), is high, so you may need to place a pull-up resistor on the RA.2 pin, also, there must exist some form of loop back from Sin to Sout so that the Stampw.exe software can communicate with the BASIC stamp.
So does this mean I am going to have to add the pull up resistor and the feedback loop myself after piecing the kit together? Im not keen on this. I can guess as to what they are but really i have limited electronic experience. I want a kit i can put together and plug into my PC and start programming....
Thanks in advance,
Jimmy. I like buttons
I was reading the information on the OEM modules. It says this on this page :
http://www.parallax.com/html_pages/products/basicstamps/basic_stamps_oem.asp
Serial Communication
Parallax uses a minimum complement of components to effect an interface between the high levels of RS232 and the relatively low levels of TTL. Regardless of how the line levels are interfaced, there are two important things to note: the idle state of the serial input line (Sin) at the interpreter, (RA.2), is high, so you may need to place a pull-up resistor on the RA.2 pin, also, there must exist some form of loop back from Sin to Sout so that the Stampw.exe software can communicate with the BASIC stamp.
So does this mean I am going to have to add the pull up resistor and the feedback loop myself after piecing the kit together? Im not keen on this. I can guess as to what they are but really i have limited electronic experience. I want a kit i can put together and plug into my PC and start programming....
Thanks in advance,
Jimmy. I like buttons
Comments
If i buy a basic stamp 2, (NOT the OEM one) how do i go about programming it?
I assume it connects to a serial cable into the PC. However which pins connect to
the wires on the serial connection. In the FAQ it pointed to a link which is now dead.
www.parrallax.com/stamp/stmpsche.htm
Thats what im assuming anyway. Perhaps you need other circuitry to interface it
with the pc. Not sure....
thanks again
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Wow a reply in under 3 hours. Fantastic!
Anyway the thing will work as you'd expect. The extra stuff was for if you are implementing
a BS2 in a design.
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Chris Savage
Parallax Tech Support
csavage@parallax.com