Product description: Tic T834 - USB stepper motor driver 10,8 V / 2 A - Pololu 3132
The chip allows you to control a stepper motor using a device that allows you to generate logic states, e.g. Arduino, STM32Discovoery, Raspberry Pi people any microcontroller. The controller can be configured, tested and monitored via USB and runs on Windows, Linux, and macOS.
The Pololu module features very simple operation. In order to rotate the motor by one step, a high state (logical one) should be given to the STEP pin, the next sequence of zero and one will move the motor by the next step and so on. The selection of the direction is done by giving the appropriate state to the DIR pin (e.g. low state - clockwise rotation, high state - anticlockwise rotation). The controller also has the ability to select the resolution of motor operation.
Connecting the driver
To control a bipolar stepper motor connect the system according to the diagram below. If the nominal motor voltage is lower than required driver supply (2.5V), set the current limit manually using the potentiometer.
The figure shows the minimum connection of the controller.
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A comprehensive user guide is available from the manufacturer. |
Power supply of the controller
A5V regulator is required to supply power (no external logic supply is required) tothe 5Vpin.The motor supply voltage from 2.5 V to 10.8 V is applied to the VINpin. The circuit can be used to control motors with a nominal voltage lower than the required 2.5 V. To do this, limit the maximum current draw using a potentiometer so that the motor current limit is not exceeded. For example, for a motor with a resistance of 5 Ω per coil and a current consumption of 1 A, the nominal supply voltage is 5 V. When supplied with 12 V, the current should be limited so that it does not exceed 1 A.
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Caution! Connecting and disconnecting the motor while the controller is on can damage the system. |
LED diodes
There are three LEDs on the board: green, red and yellow. Green means communication via USB. The red one is connected to the ERR pin, if it lights up, it means there is an error. Yellow indicates the stepper motor status and gives some information about errors, if any. Detailed description can be found in documentation on manufacturer website.
Heat dissipation
The board was designed to dissipate heat at a current consumption of about 1,5 A per coil. If the current will be much higher you should use an external heat sink for which you can use thermally conductive glue.
Technical specification of the driver
- Supply voltage of the motor: 2.5 V - 10.8 V
- Current: max. 1.5 A per coil (with cooling up to 2 A)
- Supply voltage of the logic part: regulator 5 V - no external power supply is required
- Simple control interface
- Operation in 6 different modes: full step, 1/2, 1/4, 1/8, 1/16 and 1/32 step
- Adjustable current consumption by the motor using a potentiometer
- Protection against overheating of the system
- It has 6 control interfaces: USB, serial TTL, I2C, RC pulse servo, analog, square encoder
- Maximum step speed: 50000 steps per second
Kit includes:
- DRV8834 stepper motor driver module
Useful links |
