※ 1. 【Work mode】: Step mode, DIR / UART, you can use these functions through modifying the firmware.※ 2. 【Step / DIR mode】: choice of working mode: MS1, MS2※ 3. 【TMC2209 V1.2 VS TMC2208, more of these functions】: 1. Current Dynamic Adjustment ※※ Coolstep - TMC2209 provides current dynamic regulation technology which saves up to 75% electric power.※ 4. 【TMC2209 V1.2 VS TMC2208, more of these functions】: 2. Rotation detection lock ※※※ Stallguard - TMC2209 provides load and stall detection technology