The L298N chip is pin compatible with the L293N and will handle up to·4 amps with proper heat sinking.
The N version of this chip requires external doides.
you can also reduce the power consumption (and power of the motor) by adding small resistors in line with the coils. it is a good choice if you don't need all the power of the motor.
A fancier driver·couples ·the 297 controller chip· with the L298N and features a chopper drive-- but you said "nothing fancy"
Thanks for the suggestion, Larry.· If I add the 8 external diodes, do I wire this up·just like my L293?· Can I use the same program to drive the L298?
With the staggered pins this chip won't plug into a breadboard - probably have to have a PC board made.· Guess it would be simpler if I could find a used controller somewhere.· Anyway, thanks - this is the only possibility I have right now.
Here are the pinouts and datasheet that will show the diode ladder arrangement. Schematically, it's the same as the 293. the same program would work, too.
I've done a "dead Bug" quicky implimentation that worked well enough that it is still in a robot. I soldered the pins directly to Radio shack terminal connectors and the other bits.
As I recall, the pins will fit into a proto board on the diagonal with a bit of tweaking if you want something more substantial. then use wire wrap wire to connect everything.
Larry, the Super Carrier Board has a row of staggered pads on the right edge - the L298 should drop right in.· I'll order one and make that board my dedicated bipolar driver.· Not bad for $20.00
If you want to use your TIP120 transistors to drive your stepper motors you can try this. I have built a driver circuit to test my 100 oz steppers for my wood CNC router. Used the diagram found here:
The circuit uses TIP110 which I replaced with TIP120. I also replaced the 7406 with four 2N3906 transistors. You'll need to use a resistor on the 2N3906 when connecting to the stamp. Using one of Jon's stepper motor programs to drive the stepper motor using a BS2 (P4, P5, P6, P7). Works pretty well for testing the motors, but will probably end up using www.hobbycnc.com 4AUPC boards to eventually control the router using TurboCNC for the G-Code.
Attached is the code that I'm using to drive the motor.
Mike
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Was not sure if I needed them or not, so put them in anyway. Seems to function ok. Like I said this is just to test the motors. Since I will be using TurboCNC to drive the completed machine, I will be using the 4AUPC to drive these motors @ 28 VDC.
Mike
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"OEM NMEA GPS Module" Now available on ebay for only $19.99
Comments
The N version of this chip requires external doides.
you can also reduce the power consumption (and power of the motor) by adding small resistors in line with the coils. it is a good choice if you don't need all the power of the motor.
A fancier driver·couples ·the 297 controller chip· with the L298N and features a chopper drive-- but you said "nothing fancy"
Larry
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Post Edited (Larry) : 7/2/2005 10:54:07 PM GMT
With the staggered pins this chip won't plug into a breadboard - probably have to have a PC board made.· Guess it would be simpler if I could find a used controller somewhere.· Anyway, thanks - this is the only possibility I have right now.
Sid
http://www.hvwtech.com/pages/products_view.asp?ProductID=198
I've done a "dead Bug" quicky implimentation that worked well enough that it is still in a robot. I soldered the pins directly to Radio shack terminal connectors and the other bits.
As I recall, the pins will fit into a proto board on the diagonal with a bit of tweaking if you want something more substantial. then use wire wrap wire to connect everything.
Larry
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Thanks again for the suggestion.
Sid
http://www.solarbotics.com/
Click on Kits and scroll down to Kit #13 - The L298 Motor Driver.· This looks like the answer and only $17.95!
Sid
If you want to use your TIP120 transistors to drive your stepper motors you can try this. I have built a driver circuit to test my 100 oz steppers for my wood CNC router. Used the diagram found here:
http://eio.com/jasstep.htm#intro (Figure 2.1)
The circuit uses TIP110 which I replaced with TIP120. I also replaced the 7406 with four 2N3906 transistors. You'll need to use a resistor on the 2N3906 when connecting to the stamp. Using one of Jon's stepper motor programs to drive the stepper motor using a BS2 (P4, P5, P6, P7). Works pretty well for testing the motors, but will probably end up using www.hobbycnc.com 4AUPC boards to eventually control the router using TurboCNC for the G-Code.
Attached is the code that I'm using to drive the motor.
Mike
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
"OEM NMEA GPS Module" Now available on ebay for only $19.99
Product web site: http://www.allsurplus.net/Axiom/
Sid
Was not sure if I needed them or not, so put them in anyway. Seems to function ok. Like I said this is just to test the motors. Since I will be using TurboCNC to drive the completed machine, I will be using the 4AUPC to drive these motors @ 28 VDC.
Mike
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
"OEM NMEA GPS Module" Now available on ebay for only $19.99
Product web site: http://www.allsurplus.net/Axiom/