I would like to build a parallel port DAC board capable of running a VFD. My VFD's use 0 to +10 Volts for setting speed, then a Forward and a Reverse pin which sink to a Common. My plan so far, includes a pair of 74244 buffers, maybe a 7224 8-bit DAC, +10 Volt regulator, +5 Volt regulator and a pair of opto-isolators. I looked through the HAL components that I could find, but couldn't find one that would convert an unsigned 32 to binary, I guess a wsum in reverse. I may need to write a new component, but if there is a component I overlooked, please let me know.
If there is interest, I would like to make it an open project, maybe with a wiki, so that everyone can submit input, then collect documentation and orders to have boards made. Wudyathink? -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending) ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
