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It may be that the sense lines going into the l297, since not connected, are sensing high, which would turn off the outputs. Probably when you get the l298 connected correctly, it should run fine.
I certainly wasn't trying to trash Xilinx, there's a few things I like better (than Altera) about there product model and dev boards - more friendly to hobbyists (IMHO), but I do think the Altera IDE (Quartus II 10.1) is better. Maybe I didn't look deep enough. Does xilinx ISE have an Embedded...
All of the 3 NiosII versions can be experimented with, as long as your device is tethered to your PC. Once you disconnect it, the processor "expires" in about an hour. If you have a license you can permanently flash your code to your device. But no, there are no free versions of the NiosII.
I bought one of these (The Cyclone IV version) and also bought a few 80 pin connectors for the card edge connection (from Samtec). I went thru the labs supplied in the download, It is certainly a fascinating device. I want to make an expansion board and develope an AC servo controller with 3...
If some force is being applied to the motor and you wish it to resist that force (and stay stopped) then current must be kept flowing in the last phase that was energized. The current would need to be proportional to the force. There is usualy a parameter supplied with the motor called "Holding...
lm628 + dc motor how to conect
I would need to see the code to check for errors. There are so many possible mistakes it would be difficult to guess. If you were able to RSTI then you must be switching the control signals (CS, PS, WR, RD) correctly. I assume you're checking the Busy Bit and...
Re: DSP Project??
I have made an experimental circuit with a DSPpic30f4011. I used the a/d converter and the small on board RAM to simulate a "flanger effect" for my guitar. Not sure if this is appropriate, reply if interested.
Re: ROBOTIC ARM
Look at this entry, I posted a lot of code and scematics for arm robot using PIC micro and LM628 motor control chips. It's a record and play application
lm324 pid
I've attached a .doc file that describes the code I use to read data from the LM628, maybe you will see something helpfull. The numbers you've recorded here may be correct. It's not supposed to read back the same numbers you write into it. The 07 07 is fractional value and the 08 may...
bord lm628
Here's the sequence for an "absolute velocity move";
1E ;load filter, PS = low for instruction
BB ;check busy bit
00 ;PS = hi for data
18 ;means Kp only to be loaded
BB ;PS is low to check busy bit
00 ;Kp hi byte, PS hi for data
80 ; Kp low...
dual motor pid code -globalspec
From the datasheet;
"The LM628 DAC output port can be configured to provide
either a latched eight-bit parallel output or a multiplexed
12-bit output. The 8-bit output can be directly connected to a
flow-through (non-input-latching) D/A converter; the 12-bit...
picbasicpro pid routine
The "+" and "-" are keys on the keypad used to jog the motor in forward or reverse, this is how the robot is taught. I've attached the code for this with comments as usual. The first routine, "move" checks for + or _ key press and sends to cw or ccw routines, these...
l297 cheap
You don't really need to program a "stop", where you apply 0V, in fact, applying 0 V may allow inertia to move it a couple more steps, where if you just stop pulsing it to effect a stop, the last phase power will still be applied, which will tend to hold it in place. Then maybe a...
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