TMC2226 stepper motor driver

This is a four-layer board stepper motor driver for 3D printers or writing machines.

Modified from Kirito 's [four-layer board] TMC2208/TMC2209 stepper motor driver ( https://oshwhub.com/Kirito/si-ceng-ban-TMC2208-TMC2209bu-ji ).

TMC2226 features:

·2-phase stepper motor, up to 2.8A coil current (peak), 2A RMS

·STEP/DIR interface with 8, 16, 32 or 64 microstep pin settings

·Smoothly run 256 microstep interpolation with MicroPlyer

·Silent motor operation

·Extended cycle high dynamic motor control chopper

·4-speed stealth chopper load and stall detection

·Current control that saves 75% energy

·Voltage range 4.75…29V DC

·Low power backup power supply suitable for EUP or battery operation

·Internal sense resistor option (no sense resistor required)

·Passive braking, freewheeling and automatic power-off

· Single-wire UART and OTP for advanced configuration options

·Integrated pulse generator with independent movement

·Comprehensive protection and diagnostics

Revise

Modify DIAG pin definition.

Modify the reference voltage setting method

other

The V1 version is suitable for motherboards with pre-made serial cables, such as BIGTREETECH  SKR V1.3, Makerbase MKS SGen_L V1.0, etc.

The V2 version is suitable for motherboards that do not have serial lines directly arranged, such as RAMPS V1.3, etc.

Recommended heat sink Miaoxin Hardware stepper motor driver heat sink TMC2100 module 3D printer accessories 15*14.5*13.

The infinite zero return function has not been tested.

No long-term load testing was performed.

Known issues

Jiali Chuang's processing size is too large in the long direction and may not be perfectly inserted into the motherboard.