- Sep 17, 2002
Hey, ever since i finished the parallel port interface, i am interfacing it to my model trains, i got a circuit that will give 64 bits from an 8 bit parralellel port, i finished that, now i need to know if anyone would know any way of contoling speeds of a dc motor with voltages from 0volts to 35volts , i want to have at least 10 positions, more would be nice but i am limited to 64 bits! I got a digital pot from dallas semiconductors to play with (http://pdfserv.maxim-ic.com/arpdf/2748.pdf) , but i played a little to much and melted the chip and my breadboard, boy do those chips get HOT i have a blister on my finger from it! well if anyone knows any circuits or anyways, that doesNot use a relay for each speed, post it here!!!!!!!!!!!