Jasonsheng：Created page with "{{Language|第三十八课--Microduino 步进电机驱动}} {| style="width: 800px;" |- | ==Objective== This lesson will show you how to control the stepper motor by Microduin..."

2014-03-28T07:22:15Z

Created page with "{{Language|第三十八课--Microduino 步进电机驱动}} {| style="width: 800px;" |- | ==Objective== This lesson will show you how to control the stepper motor by Microduin..."

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{{Language|第三十八课--Microduino 步进电机驱动}}
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==Objective==
This lesson will show you how to control the stepper motor by Microduino A4982 module, and welding the step motor control board.
==Equipment==
*'''[[Microduino-Core]]'''
*'''[[Microduino-FT232R]]'''
*'''[[Microduino-A4982]]'''
*Other equipments:
**USB cable
**Pegboard
**Studs, screws
*Welding tools：
**Electric iron
**Solder
**Wire
**Forceps

==Stepper motor==
*Connection method for stepper motor：
Connect the stepper motor to Microduino A4982 module:
**Four wire two phase stepper motor has two sets of coil A and B, each group coil's resistance is very small, only a few ohm. A and B group is absolutely insulation and disconnected. Measured with a multimeter, connected is a set;
**After measured group A and B, connect one group coil to OUT1A and OUT1B, the other group coil connects to OUT2A and OUT2B;
**By changing the MS1 & MS2 to change the stepping mode (Microduino A4982 default uses 1/16 step mode).

*Angle calculation：
Stepper motor parameters：1.8deg/slep, that is stepper motor moves one step turned every 1.8°.

**Step number=360/1.8*16=3200 step
Multiplied by 16 because Microduino A4982 default use 1/16 step mode.

[[File:Stepper_motor_deg.jpg|600px|center|thumb]]

==Schematic==

[[File:Stepper_motor.jpg|600px|center|thumb]]

==Debug==
*Step 1：Crop the pegboard as specified size；

*Step 2：Determine the Microduino's base position, then welding the circuit according to the schematics:
[[File:A4982.png|thumb|600px|center|洞洞板焊法]]
[[File:A4982_Stepper_motor-t.jpg|thumb|600px|center|正面]]
[[File:A4982_Stepper_motor-b.jpg|thumb|600px|center|反面]]
*Set up circuit
[[File:A4982_Stepper_motor-ok.jpg|thumb|600px|center|ok]]

==Program==
*Used library：【AccelStepper library'''[https://github.com/adafruit/AccelStepper github下载 ]''' 】
*Downlaod test program：'''[[File:Program Test A4982.zip]]'''
*Compile it and select the correct board type to download.
*Test
**Connect power (6-25V), the motor won't move in initial state;
**Press the button, the stepper motor will rotate as setted pace, and LED indicator lights, reverse rotation after a few laps, the cycle repeated;
**Press the button again, close the drive, LED indicator turn off.

==Result==
We can control the four wire two phase stepper motor successfully by Microduino A4982 module.
==Video==
http://v.youku.com/v_show/id_XNjg5MTcwOTA0.html
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Lesson 38--Microduino Stepper Motor Drive - 版本历史

Jasonsheng：Created page with "{{Language|第三十八课--Microduino 步进电机驱动}} {| style="width: 800px;" |- | ==Objective== This lesson will show you how to control the stepper motor by Microduin..."