L297 L298 BIPOLAR STEPPER DRIVER

Sign up using Email and Password. To participate you need to register. As you say it weighs 4 KG in your first post it must be quite large. I am using a 5V power supply from a DC adaptor. Power source is 5V already mentioned in question , I have used 22k resistors for current sense pins , I'm only a novice and made the circuit following a schematic on web , now it seems current sense pins determines the amount of current that can go into L

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But even that one still drops a lot and heats up. Using the maximum Vsat values. Not surprising you have problems without them. Depending on the current you want to use for the motor coils the supply current may or may not be enough. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Articles Top Articles Search resources.

Problem with Bipolar Stepper Driver (L297 & L298)

Email Required, but never shown. I have hooked up the step and direction pin number 4 and 5 respectively on Arduino.

Note the Vsat values for this device are quite high. It works good with stepper motor BUT the problem it that L turns very hot in just 10 seconds and it can blow completely after 1 minute. Adding phase resistors should be done in equal amounts so plan to use 4 resistors. Home Questions Tags Users Unanswered. Also what is the Vref applied in pin 15 of L?

Stepper Motor driver circuit with L L - Electronics Projects Circuits

I think in most cases it is cheaper to buy a ready made stepper driver module than to build one. Media New media New comments Search media. By clicking "Post Your Answer", you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these atepper.

When you know how much power you can stepoer you can work out how much current that equates to. Also the datasheet lists several motors, what are the current specs for your specific one?

From the difference between that stpeper and the ambient temperature you can calculate the maximum power you can allow the device to dissipate using the thermal resistance to ambient.

The thermal calculations are a bit more complicated with a heat sink as you need to know the thermal resistance of the heat sink and insulating washer If used between the device and heat sink. Power source is 5V already mentioned in questionI have used 22k resistors for current sense pinsI'm only a novice and made the circuit following a schematic on webnow it seems current sense pins determines the amount of current that can go into L You must log in or register to reply here.

You need to find a tutorial about motor driving rather than doing random things in order to make it work.

This will be the sense resistor value times the value of current you have calculated. To participate you need to register.

arduino - L + L circuit not working - Electrical Engineering Stack Exchange

Those internal voltage drops are why the get so hot. Why did you l98 the capacitors? The L is an old driver chip. Help identifying strange capacitor terminal style Started by Killians Yesterday at L current limiting 1.

I think this was 35 Deg. Or if you do not want to do that then use a circuit that has been designed by someone else. Why have you set the current limiting value so high? C per watt from memory.

I am using a 5V power supply from a DC adaptor.