3.3 and 5 V compatible logic supply.
Thermal shutdown circuitry.
Ground fault protection.
Load short-circuit protection.
Optional step five modes: full, 1/2, 1/4, 1/8 and 1/16 .
Package include:
5 x StepStick Stepper motor driver module A4988.
5 x Heatsinks with sticky base.
NOTE:
Green or red version random shipment.