Instructables
The following links will give you pointers on getting USB to work with the Parallax Stamp, and can be easily modified for your favourite Microcontroller or programing language.

USB to RS232 converter Got legacy equipment, but your new Mac or PC is USB based? You can still use your old equipment with my Adapter.
USB on a Stamp A simple example showing how to get USB working with a Stamp. Followed by a practical USB based LCD Display project.


In the pipeline: (please check back): USB OEM Stamp


Contents:
1.Parts and Circuit Diagram
2.Procedure
3.Macintosh Test Application
4.A USB based LCD (in progress)

The following links will give you pointers on getting USB to work with the Parallax Stamp, and can be easily modified for your favourite Microcontroller or programing language.

USB to RS232 converter Got legacy equipment, but your new Mac or PC is USB based? You can still use your old equipment with my Adapter.
USB on a Stamp A simple example showing how to get USB working with a Stamp. Followed by a practical USB based LCD Display project.


In the pipeline: (please check back): USB OEM Stamp


 
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Step 1: Step 1: One direction - USB to RS232.

Picture of Step 1: One direction - USB to RS232.
Idea is to be able to press a Key on a USB based Mac, and have the Key's character displayed on a Windows PC.

How it works:

When the USBMOD2 has data in it's Receive Buffer, it sends /RXF low to tell the microcontroller there is data available to read.

The Microcontroller then has to send /RD low in order for the first byte of that data to be presented on the bus so it can be read. When /RD is sent high, if data is in the buffer, the next byte will be made available and presented on the bus at the next high to low transistion of /RD.

The Software:

To test, make sure you have the FTDI USB extension installed on your Mac. Use a Datacoms program like Clarisworks and select the USB port in the program's prefs. On the Windows side, use Hyperterminal, set to 9600,8,N,1.
vishalapr2 years ago
Cool I'm getting my parallax stamp in 3-5 days!
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