Subdivision Table

COMMON DRIVER JUMPER TABLES

These tables are provided as a convenience to the user. Since we cannot speak on behalf of the manufacturer of your drivers it is recommended that you still find the datasheet for your drivers and reference the pin settings required for the microstepping factor that you desire. Note that the pin naming and ordering in the tables below is not consistent but the lowest number pin will always map to the pin named MS1 on the octopus and the numbering follows from there.

Driver Chips	MODE2	MODE1	MODE0	Microsteps	Excitation Mode
DRV8825 Maximum 32 microsteps 8.2V-45V 2.5A at 24V T=25℃	L	L	L	Full Step	2 Phase
	L	L	H	1/2	1-2 Phase
	L	H	L	1/4	W1-2 Phase
	L	H	H	1/8
	H	L	L	1/16
	H	L	H	1/32
	H	H	L	1/32
	H	H	H	1/32
Current RISENSE=0.1Ω	ICHOP = V(xREF) / 5 / RISENSE

Driver Chips	MS1	MS2	MS3	Microsteps	Excitation Mode
A4988 16 microstep max 35V 2A	L	L	L	Full Step	2 Phase
	H	L	L	1/2	1-2 Phase
	L	H	L	1/4	W1-2 Phase
	H	H	L	1/8	2W1-2 Phase
	H	H	H	1/16	4W1-2 Phase
Current RS=0.1Ω	ITripMAX = VREF / 8 / RS

Driver Chips	MD3	MD2	MD1	Microsteps	Excitation Mode
LV8729 Maximum 128 microsteps 36V 1.8A	L	L	L	Full Step	2 Phase
	L	L	H	1/2	1-2 Phase
	L	H	L	1/4	W1-2 Phase
	L	H	H	1/8	2W1-2 Phase
	H	L	L	1/16	4W1-2 Phase
	H	L	H	1/32	8W1-2 Phase
	H	H	L	1/64	16W1-2 Phase
	H	H	H	1/128	32W1-2 Phase
Current RF1=0.22Ω	IOUT = (VREF / 5) / RF1

Driver Chips	MS3	MS2	MS1	Microsteps
ST820 Maximum 256 microsteps 45V 1.5A	L	L	L	Full Step
	L	L	H	1/2
	L	H	L	1/4
	L	H	H	1/8
	H	L	L	1/16
	H	L	H	1/32
	H	H	L	1/64
	H	H	H	1/128
Current RS=0.15Ω	Ipeak = (VREF * VDD) / (5 * RS)