Interfacing Boe-Bot CMUcam with Propeller

famousperson

I'm sure someone·has used the CMUcam with the Propeller. Does how-to information for the interface exist?··· I can get the information I need to interface the camera to the Stamp.· Would· I want·to use Stamp processed video information as input to the Propeller, or can I use the··TSL1401 Linescan Imaging Sensor Daughterboard·directly with the Propeller?·

Initially I will be happy just to find edges.· At some point I want to get more sophisticated.· I have programmed image processing systems professionally, but I am a total newbie when it comes to the hardware.

Any help would be gratefully accepted.

Thanks.

Peter

Mike Green

I don't believe there's any "how-to" for this. The CMUcam has its own microcontroller in it (an SX) which does a lot of the processing and makes the data available as a 5V logic serial data stream. You'll need a 2.2K resistor between each of two Propeller I/O pins and the CMUcam's input data and output data pins respectively. This is to protect the Propeller from the 5V signals. Any of the available Propeller serial I/O drivers could be used for interfacing. The FullDuplexSerial object or its extended versions would work fine. Read the CMUcam documentation for details of how to connect it and the format of the commands.

The TSL1401 Daughterboard is for a completely different device and wouldn't help you at all.