MikroElektronika STEPPER 2 click Manuel utilisateur

2 3

2. Soldering the headers

3. Plugging the board in

Once you have soldered the headers your

board is ready to be placed into the desired

mikroBUS™socket. Make sure to align the cut

in the lower-right part of the board with the

markings on the silkscreen at the mikroBUS™

socket. If all the pins are aligned

correctly, push the board all the

way into the socket.

Turn the board upward again. Make sure

to align the headers so that they are

perpendicular to the board, then solder the

pins carefully.

Turn the board upside down so that

the bottom side is facing you upwards.

Place shorter pins of the header into the

appropriate soldering pads.

Before using your click board™, make sure

to solder 1x8 male headers to both left and

right side of the board. Two 1x8 male headers

are included with the board in the package. 1

Stepper 2 click carries an A4988

microstepping motor driver along with

screw terminals for connecting an external

motor, as well as for bringing in an external

power supply. The output drive capacity of

the motor is up to 35V and ±2A. The board

communicates with the target MCU through

EN, RST, SL, ST and DIR pins (corresponding

to AN, RST, CS, PWM and INT pins of the

default mikroBUS™ conguration). Stepper

2 click has a 3.3V power supply but is also

compatible with 5V logic.

1. Introduction

0100000085769

click

BOARD™

www.mikroe.com

STEPPER 2 click

Stepper 2 click Manual v100

4. Essential features

The A4988 chip is designed to drive bipolar

stepper motors in full-, half-, quarter-,

eight-, and sixteenth-step modes. No phase

sequence tables are required for operating

the driver – a single pulse through the STEP

input drives the motor one micro-step. A set

of three onboard jumpers (J1-J3) allow you

to switch between the dierent stepping

modes (a micro-stepping resolution truth

table is provided in the data sheet of the

chip. The DIR pin is for determining the

direction of rotation of the motor.

OUT2B

ENABLE

GND

CP1

CP2

VCP

VREG

MS1

MS2

MS3

RESET

ROSC

SLEEP

VDD

STEP

REF

GND

DIR

OUT1B

A4988

VBB2

SENSE2

OUT2A

OUT1A

SENSE1

VBB1

RST

SCK

MOSI

MISO

+3.3V

GND

PWM

INT

SCL

SDA

+5V

GND

MIKROBUS DEVICE CONN.

GNDGND

VCC

GND

220nF

GND

100nF

VCC

MS3

MS2

MS1

CP1

CP2

VREG

MS1

MS2

MS3

CP1

CP2

VREG

DIR

RST

DIRRST

STEN

VCP

OUT2B

VBB

OUT2A

OUT1A

VBB

OUT1B

CN1

VBB

100nF

VCP

CN2 CN3

OUT2B

OUT2A

OUT1A

OUT1B

VCC

PWR

GND

2K2

SEN2

SEN1

GND

0.232

SEN2

SEN1

GND

5K C4

220nF

GND

8. Code examples

MikroElektronika oers free tech support

(www.mikroe.com/support) until the end of

the product’s lifetime, so if something goes

wrong, we’re ready and willing to help!

Once you have done all the necessary

preparations, it’s time to get your click board™

up and running. We have provided examples

for mikroC™, mikroBasic™ and mikroPascal™

compilers on our Libstock website. Just

download them and you are ready to start.

.com

6. Dimensions

MikroElektronika assumes no responsibility

or liability for any errors or inaccuracies

that may appear in the present document.

Specication and information contained in

the present schematic are subject to change

at any time without notice.

mm mils

LENGTH 42.9 1690

WIDTH 25.4 1000

HEIGHT* 3.9 154

5. Schematic

9. Support

* without headers

10. Disclaimer

Stepper 2 click features three pairs of

screw terminals. 2B, 2A, 1A and 1B are for

connecting the stepper motor, VIN and GND

are for bringing an external power supply.

25.4 mm / 1000 mils

42.9 mm / 1690 mils

7. Screw terminals

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