EV3利用转换线控制不了电机。

mtllmt

如题，求编程软件的移动模块，想控制普通电机，（比如科技系的）但是没有模块。如果通过转换线接电机，会无法识别端口，并且控制不了，我想问下有没有模块可以下载，只需控制电机秒数，国外看过有小朋友成功的视频，但是找不到模块。

a5197

作者自己做一个转换电缆，我刚学技术不够无法解答你的问题，我将他和其他人的讨论对话提供出来，参考
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Brian Bouffard
Very Cool Video!,   But can you please explain why you had to add a Power Function Batter Back to the mix?  Is the EV3 unable to provide the adequate amount of power using one of the old NXT 2.0 conversion cables?   I know in the past I was able to use the XL and Md motors in this way.   is the Servo Motor somehow different?    Thank you again for the great video!   I am just wanting to learn a bit more about your process and why.   

TechnicRobot
thanks! as you know, power function motor like general DC motor, use 2 lines (C1, C2) can be fully controlled (forward, backward, float and brake).
but the Power Functions Servo Motor NOT like DC motor, it need total 4 lines, a fix 9V power supply (POWER, GND) and a PWM signal (C1, C2) to control the degree.
so, my demo use EV3 output a PWM signal (C1, C2) to the Servo, and use Power Functions Battery to provide fix 9V power.
the PWM signal will be C1=+9V, C2=GND or C1=GND, C2=+9V...etc, so it cannot used as fix power supply to the Servo Motor.

Brian Bouffard
Thank you so much for the explanation.  
And so very fast!   It may take me a day or two to completely understand.  
But I think I got it.  
Now can this be plugged into only the motor sports?
Or can it be used as an additional motor.  I.E  5 Motors using one of the sensor ports.
Thank you again.   for the info..

TechnicRobot
this connection only for power functions servo motor.
but the output ports of EV3 not only can drive motor.
you can take a look another video for the connection of control normal power functions motor,
the you can drive other actuator (within the EV3 output port current limit), such as relay, LED, bulb, linear actuator.
  
kuuwee coey
Cool. I don't know what I'm doing. It would be cool if someone made these. But I might try it anyways
TechnicRobot
Feel free to contact me if you have any problems :)

Alain Bruneau
I do use more then 4 motors on some applications by using the Mindsensor Mux but that is not the reason since it has a power input.. It is for a small app with 1 or 2 XL PF motors, I just wanted the EV3 batt to last longer (when no Mux are available and the EV3 hard to access).  ;)


Alain Bruneau
Can you take this conversion cable to control PF motor instead of the one in the other video to use the battery pack power, not the EV3 one?

TechnicRobot
This conversion cable cannot, normal PF motor only used 2 pins (C1, C2) for control and they directly conntected to EV3.
You want to use more motors/current on single EV3 port?

Kimura Kaori
А на русском языке есть что то о Lego?

TechnicRobot
да, лего сайт имеет русский слишком

Ross Crawford
Can you use the POWER & GND from EV3 to 9V & GND on servo, so battery box is not needed?

TechnicRobot
the POWER & GND from EV3 (pin 4 & 3) supply 5V and limited current only, should be cannot connect on servo directly

水蜜桃

那个软件是假的

a5197

感觉你的问题好像跟这个作者所做的产品部分功能有关，你可以参考看看
https://www.youtube.com/watch?v=N8iDY9oTMig
使LEGO MINDSTORMS EV3转换线来控制每个输出端口2乐高汽车（可以是EV3马达，NXT马达，功率功能电机或RCX马达）。其原理是快速切换的EV3输出端口的极性来控制每个LEGO马达的时间。此连接的缺点是乐高汽车只能旋转向前或向后的方向
https://www.youtube.com/watch?v=K-iEnWZ5Kew&list=PL5ntyFspLD1RRGOq-Hl0zem0HvM5MC2Zv
做一个转换电缆用于LEGO MINDSTORMS EV3使用非稳压电机座EV3上的软件控制电源功能88004伺服电机（6000566）15位置。查看端口自动识别功能，检测转换电缆EV3 L型电机。
幂函数伺服电机转动，通过相应的非稳压电机座的功率电平的15个职位：
职位-7功率：-100（逆时针旋转90度）
的位置-6功率：-88
位置-5功率：-73
位置-4功率：-62
位置-3功率：-46
位置-2功率：-34
-1位电源：-18
位置0功率：0（中心）
位置1功率：18
位置2功率：34
位置3功率：46
位置4功率：62
位置5功率：73
位置6功率：88
位置7功率：100（90度顺时针旋转）

mtllmt

a5197 发表于 2014-3-18 17:26
感觉你的问题好像跟这个作者所做的产品部分功能有关，你可以参考看看
https://www.youtube.com/watch?v=N8 ...

翻墙不了，看不了你的所说的视频，我问的问题是，通过转换线控制马达，一般都是利用时间控制的，但是ev3利用转换线控制不了马达。

水蜜桃

你觉得EV3是NXT吗？

mtllmt

水蜜桃 发表于 2014-3-19 15:51
你觉得EV3是NXT吗？

nxt 都可以实现，ev3高级，为啥不能向下兼容啊

robotloop

奇怪，那个高级面板上的unregulated motor 不就是干这个的吗？

路珺

盗版

spirit

是盗版，从新下一个正版的应该可以！

kubaba

前两天按照technicrobot的方案做了ev3到pf的控制线，现在控制pf马达和伺服马达毫无压力