溫馨提示:現貨有紅板跟藍板 默認隨機發
演示視頻:複製打開
http://v.youku.com/v_show/id_XNTc0MDUxNjY0.html
晶片資料;http://www.alldatasheetcn.com/datasheet-pdf/pdf/83571/ALLEGRO/A3967.html
學習論壇教程:
教程1:http://www.geek-workshop.com/forum.php?mod=viewthread&tid=12281&highlight=EasyDriver
教程2:http://www.geek-workshop.com/forum.php?mod=viewthread&tid=8746&highlight=EasyDriver
步進電機通常定義有步距角或者步數參數,一般的電機一轉都是分為200步,也就是步距角為1.8度,EasyDriver 具有步距細分功能,這款驅動板的細分為8細分,也就是將電機的每一步再細分為8小步,這樣能夠能夠得到更精確的控制,也就是說EasyDriver 需要1600步來完成一個完整的360度旋轉。
ms1和ms2是步進電機細分解析度選擇的邏輯輸入口;
dir是電機運轉方向的選擇口;
reset用於重置晶片初始值,遮罩所有外部輸出;
step為脈衝輸入埠;
out1a、out1b、out2a、out2b為h橋的兩對輸出埠;
enable為使能端;
sleep為睡眠模式;
sense1、sense2為h橋的電流檢測電阻;
ref為參考電壓;
gnd為邏輯地和電源地;
rc1、rc2為h橋固定截止時間模擬輸入。
a3967slb是美國allegro公司生產的pwm恒流控制微步距驅動二相步進電機專用驅動器。它的工作電壓可達30v,驅動電流達750ma,一個a3967slb即可驅動一台二相步進電機,可實現8細分驅動。晶片內部的pwm電流控制電路可通過加在pfd的電壓設置為慢、快、混合三種電流衰減模式,如果pfd端的電壓高於0.6vdd,則選擇慢衰減方式。若低於0.21vdd,則選擇快衰減模式。處於兩者之間為混合衰減模式。另外,a3967slb還能提供完善的保護措施,包括抑制瞬態電壓,過熱保護、防止電流直通、欠電壓自鎖等功能。
a3967slb和微處理器之間不需要附加其他的介面電路,該晶片采easystepper
介面,將8條控制線減少了2條(步長和方向),只要簡單地輸入控制步進電機的脈衝,其內嵌的轉換器就可以實現對步進電機的控制。
a3967slb還需要一些電阻、電容來調整其工作參數,整個驅動電路非常簡單
每一個都是必須測試好才發貨!請各位放心購買
EasyDriver-Stepper-Motor
Description:The EasyDriver is a simple to use stepper motor driver, compatible with anything that can output a digital 0 to 5V pulse (or 0 to 3.3V pulse if you solder SJ2 closed on the EasyDriver). EasyDriver requires a 7V to 30V supply to power the motor and can power any voltage of stepper motor. The EasyDriver has an on board voltage regulator for the digital interface that can be set to 5V or 3.3V. Connect a 4-wire stepper motor and a microcontroller and you've got precision motor control! EasyDriver drives bi-polar motors, and motors wired as bi-polar. I.e. 4,6, or 8 wire stepper motors. On this version (v4.4) we fixed the silk error on the min/max adjustment.
This is the newest version of EasyDriver V4 co-designed withBrian Schmalz. It provides much more flexibility and control over your stepper motor, when compared to older versions. The microstep select (MS1 and MS2) pins of the A3967 are broken out allowing adjustments to the microstepping resolution. The sleep and enable pins are also broken out for further control.cjmcu made.
Note:Do not connect or disconnect a motor while the driver is energized. This will cause permanent damage to the A3967 IC.
Note:This product is a collaboration with Brian Schmalz. A portion of each sales goes back to them for product support and continued development.
Features:
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A3967 microstepping driver
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MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth)
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Compatible with 4, 6, and 8 wire stepper motors of any voltage
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Adjustable current control from 150mA/phase to 750mA/phase
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Power supply range from 7V to 30V. The higher the voltage, the higher the torque at high speeds
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配送排針,不焊接,此模組是開源的
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