Iam a satisfied user of linistepper.i made 3 boards(using posix layout) all of them worked very well.
iam using steppers of step-syn rated @1.2A
mosfets are mounted a big heat sink and are connected to board thru wires.and for power supply iam using Computer SMPS(whose 12v is rated at 20A)
the problem iam facing is,frequent burn out of mosfets.and some times motor gets very hot.and mosfets stay cool.
so isn't possible to make the mosfet part stronger? imean may be by using IRFZ44 instead of TIP122? is this gona effect the microstepping function?
and one more limitation of linistepper is,currently i can only driver motor upto 1.5A max.now i want to driver 2-2.5A motors.can i do this by shifting to IRFZ44's?