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DDS VFO with AD9850 / AD9851 and PIC16F877A
On Mon, 22 Oct 2007 12:54:16 -0400, Jimmie D wrote:
I want to build something like this but without the PIC interface. Instead I want to control it directly from a printer port. I am looking for examples of software that can talk to DDS chips in this manner. As a matter of fact I plan on building the device so that the whole thing will fasten to the printer port or possible mounted internal to the PC. Any help would be greatly appreciated. Jimmie The general problem is going to be that WINXP, 2000, Vista, and NT make it difficult to use the printer port pins directly. Not impossible, but certainly a problem. You could use something like a PIC877 or some such to act as a serial input which would then allow using Rs232 to communicate from the PC to a radio. Alternatively, use WIN98 and the printer pins are "up for grabs" with fairly simple PC programs. N6BIU -- 19:30 Pacific Time Zone Oct 23 2007 International Time 02:30 UTC 24.10.2007 |
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