Hi there,
Attached i have a circuit diagram and it's PCB, it is designed to control a stepper motor, its input is 5v.
On the outputs the middle lines into the motors are desigend to be fixed 5v with the outside four controlling it,
In simulation this works perfectly however when i have constructed it on PCB i keep getting 10volts on the middle pins and very low voltage on the outside (meant to be 5v), basically i have made two pcb's now and experiencing exactly the same problem, is it my soldering (which is awful) or is there a fundamental issue with the design.
Thanks
James
Attached i have a circuit diagram and it's PCB, it is designed to control a stepper motor, its input is 5v.
On the outputs the middle lines into the motors are desigend to be fixed 5v with the outside four controlling it,
In simulation this works perfectly however when i have constructed it on PCB i keep getting 10volts on the middle pins and very low voltage on the outside (meant to be 5v), basically i have made two pcb's now and experiencing exactly the same problem, is it my soldering (which is awful) or is there a fundamental issue with the design.
Thanks
James
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