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A4988

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Basic Parameters​

  • Compatible with: Marlin/Klipper/RRF firmware
  • Over-temperature shutdown protection
  • Ground short-circuit protection
  • Load short-circuit protection

Pinout​

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Installation on FLY Motherboard​

  • Please note that the EN pin must be aligned to the top left corner when installing
  • FLY's DP5, PRO X10, and MMU can only use TP drivers
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Driver Current Adjustment and Microstepping Instructions​

  • Driver current adjustment instructions
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  • The A4988 uses normal jumper cap mode; after installing all four jumpers, you can configure 16 microsteps directly
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Klipper Reference Configuration​

  • The A4988 does not require driver configuration such as [tmc5160 stepper_x] or [tmc2209 stepper_x]; it is not needed, and the driver will not function properly if configured

  • Set microsteps: to 16

  • enable_pin must include !: The A4988 enable pin is active low, so the ! prefix must be added for inversion during configuration, for example enable_pin: !gpio1, otherwise the motor will not be able to lock.

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