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I saw that combination...the pins CONTROL, SYNC, HOME Where should I connect them? ground??
I found another circuit while browsing....with a pair of L297s connected to Parallel port and to two motors. does it do the same thing as u said?http://farm2.static.flickr.com/1401/863692370_6bbae1f58c.jpg
HAPPY NEW YEAR
As you said I'll be using two sets of these so 1. RESET, ENABLE (which will be high as I'm using both motors concurrently)2. CW,CCW3. CLOCK4. HALF/FULL STEPThe Parallel port pins (I'm using DB-25) which has 8 data pins. As there are two sets 4 from each, so I'll be using total 8 pins. is that correct?
1) The L297 and L298 combination has a CLOCK pin. Clock is nothing but a series of Square wave right? Can i use a Square wave generator wit 555 Timer circuit there??The output from that circuit will be given to Clock pin. Can it be used like that?
That means giving alternate '1' and '0' when i want to rotate the motor...right?? Then i should put it in a loop of alternate (1 and 0) when i want to operate my motor. Is that correct? But what about the delay?A general CLOCK has a duty cycle. so how much delay i should provide for that?
I'm giving the data 1 from parallel port at one end of optocoupler and the other I'll connect a solenoid with a (230-18V) Transformer supply. If i connect it like this does the optocoupler work or burn??
Not sure that I understand your setup completely, but you cannot drive a solenoid from an opto coupler!
For the CLOCK pin, the signal should have a OFF time and ON time?I'm thinking to send the Logic 1 for 0.5sec and Logic 0 for 0.5 sec. Thats a square pulse of Vcc 5V as i'm sending from the parallel port right.
I saw that the Vref pin is max of 3V! Can i send 5V to the CLOCK pin?
If the Clock frequency, consider 1Khz and 100Hz. In which case the speed of motor is High?
Soeren, Wouldn't the proper conversion between frequency and RPM be frequency * deg_per_step * 60 / 360, seeing as Hz in periods per second, not per minute?
It worked....finished my project and got an A++
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