need URGENT HELP on our stepper motor wiring...

Sir,

I searched the net for TIP transistor based stepper motor driver but couldn't find any
Can you help me with a schematic sir?


Also, while searching i came across this L6208 IC. Will it serve my purpose instead of ULN ?

Datasheet attached...

Sir,
I think i found the solution online. Is this what you were mentioning about sir? Is this circuit enough for a 5V 1 Amp motor?

while searching i came across this L6208 IC. Will it serve my purpose instead of ULN ?

rohitsuresh

You could use the L6208, but it is intended to do much of the work of the micro
as well as drive the motor.
You learn more and save money by building the circuit yourself.

The circuit you found is good but not heavy enough.
Replace the BC337s with high gain NPN power transistors rated at over an amp.
Replace the diodes with IN400X types such as IN4000,IN4001,IN4002 etc

You may also need to boost the drive current.
Which micro are you using ?.

WE GOT A LOGIC OUTPUT..... ALL WE NEED NOW IS A CURRENT BOOSTER CIRCUIT...CAN ANYONE HELP ME??? (we searched the net and we can't find something that is truly useful and effective...)

WE GOT A LOGIC OUTPUT..... ALL WE NEED NOW IS A CURRENT BOOSTER CIRCUIT...CAN ANYONE HELP ME??? (we searched the net and we can't find something that is truly useful and effective...)

daemotheo

*If* your logic is working properly.. not just changing randomly..
and *if* you need a more powerful driver,
use the circuit rohitsuresh posted with the changes I suggested.

Is my logic working correctly please share the changes

we used the circuit I posted before but, we inserted a KA741 attached to an LED. . . what we did was a basic op-amp application for current boosting. . . .that's how we found out that we have a logic output.