SparkFun ProDriver - Stepper Motor Driver (TC78H670FTG)
Bipolar stepper motor driver board based on the Toshiba TC78H670FTG IC. Configurable via SPI or standalone pins; supports advanced decay modes and microstepping.
Pinout
- VMlatch terminal / PTH
Motor supply input
Type · PowerVoltage · motor supply - GNDlatch terminal / PTH
Motor/control ground
Type · GroundVoltage · 0V - STBYcontrol terminal
Standby control input
Type · ControlVoltage · logic level - ENcontrol terminal
Driver enable input
Type · ControlVoltage · logic level - MODE0control terminal
Motor-driver mode control bit 0
Type · ControlVoltage · logic level - MODE1control terminal
Motor-driver mode control bit 1
Type · ControlVoltage · logic level - MODE2control terminal
Motor-driver mode control bit 2
Type · ControlVoltage · logic level - MODE3control terminal
Motor-driver mode control bit 3
Type · ControlVoltage · logic level - ERRcontrol terminal
Error/status output
Type · UnknownVoltage · logic level - A+motor output terminal
Stepper motor coil A positive output
Type · UnknownVoltage · motor drive - A-motor output terminal
Stepper motor coil A negative output
Type · UnknownVoltage · motor drive - B+motor output terminal
Stepper motor coil B positive output
Type · UnknownVoltage · motor drive - B-motor output terminal
Stepper motor coil B negative output
Type · UnknownVoltage · motor drive
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VM | latch terminal / PTH | Power | Motor supply input | motor supply |
| GND | latch terminal / PTH | Ground | Motor/control ground | 0V |
| STBY | control terminal | Control | Standby control input | logic level |
| EN | control terminal | Control | Driver enable input | logic level |
| MODE0 | control terminal | Control | Motor-driver mode control bit 0 | logic level |
| MODE1 | control terminal | Control | Motor-driver mode control bit 1 | logic level |
| MODE2 | control terminal | Control | Motor-driver mode control bit 2 | logic level |
| MODE3 | control terminal | Control | Motor-driver mode control bit 3 | logic level |
| ERR | control terminal | Unknown | Error/status output | logic level |
| A+ | motor output terminal | Unknown | Stepper motor coil A positive output | motor drive |
| A- | motor output terminal | Unknown | Stepper motor coil A negative output | motor drive |
| B+ | motor output terminal | Unknown | Stepper motor coil B positive output | motor drive |
| B- | motor output terminal | Unknown | Stepper motor coil B negative output | motor drive |
Pin details
13 connections- VMlatch terminal / PTH
Motor supply input
PowerVoltage · motor supply - GNDlatch terminal / PTH
Motor/control ground
GroundVoltage · 0V - STBYcontrol terminal
Standby control input
ControlVoltage · logic level - ENcontrol terminal
Driver enable input
ControlVoltage · logic level - MODE0control terminal
Motor-driver mode control bit 0
ControlVoltage · logic level - MODE1control terminal
Motor-driver mode control bit 1
ControlVoltage · logic level - MODE2control terminal
Motor-driver mode control bit 2
ControlVoltage · logic level - MODE3control terminal
Motor-driver mode control bit 3
ControlVoltage · logic level - ERRcontrol terminal
Error/status output
UnknownVoltage · logic level - A+motor output terminal
Stepper motor coil A positive output
UnknownVoltage · motor drive - A-motor output terminal
Stepper motor coil A negative output
UnknownVoltage · motor drive - B+motor output terminal
Stepper motor coil B positive output
UnknownVoltage · motor drive - B-motor output terminal
Stepper motor coil B negative output
UnknownVoltage · motor drive
Start wiring
PWM · I2C · UART · Wide input · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: VM, GND. Schematik maps them to your board in the app.
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