Stepper Driver With UDN2559
Note that the UDN2559 must be soldered to the board for its internal heat sink and wide legs to effectively dissipate heat when being run close to the limit of 700mA.
The PIC, on the other hand, needs to be socketed as we're sure to change the firmware at inconvenient intervals.
- Schematic of 2559-based stepper driver.:
- Top view of 2559 Stepper Motor on Stripboard:
-- Main.VikOlliver - 26 Feb 2006