Robotics : 17549


Robotics / 17549	17548 \| 17550

Subject:	Re: is it possible to use a polarity switch with a RCX input?
Newsgroups:	lugnet.robotics, lugnet.robotics.rcx
Date:	Mon, 25 Mar 2002 15:39:56 GMT
Viewed:	999 times

In lugnet.robotics, Steven Nickle writes: > In lugnet.robotics, Jonathan Wilson writes: > > Basicly, what I want is a button, switch or whatever on my model that > > when moved one way causes one input to be sent to the RCX but when moved > > differently it causes a different input to be sent to the RCX. Should > > also have a 3rd "off" state. > > I am going to use it on my RCX controlled tank. RCX will use 2 touch > > sensors plus 1 motor to drive treads forward or back, touch sensors will > > trigger if it bumps into something. > > The "switch" I need will controll second motor attached to a large > > turntable to rotate turret. > > Use a resistor to make one of the states of the switch read less than a full > short. Setup as a light sensor. 0 means off 50~ means one state and 100 > means another. > > This is the basis for alot of the touch sensor multipliers. I am sure if > you dig around you can find the right values. I don't have any my books handy. But... be aware that the 'polarity switch' has only two connectors (for two sets of wires). It's not a '3-way' where you can try to select one of two inputs by moving the lever. The action is forward-off-reverse with one power source connected to one motor. Jerry

Message has 2 Replies:

		Re: is it possible to use a polarity switch with a RCX input?
(...) Well the polarity switch can be made to work as a "switcher" that can be used to can input source or output source by wiring it like Hao-yang Wang did in this example: (URL) works great like this, I use it with my RailRacers ((URL) control (...) (22 years ago, 25-Mar-02, to lugnet.robotics, lugnet.robotics.rcx)

		Re: is it possible to use a polarity switch with a RCX input?
(...) full (...) 100 (...) handy. (...) two (...) I'm not very familiar with electronics, but I am wondering whether the combination of two diodes with a resistor could solve the problem. I mean this: when current flows in a certain direction, it (...) (22 years ago, 26-Mar-02, to lugnet.robotics, lugnet.robotics.rcx)

Message is in Reply To:

		Re: is it possible to use a polarity switch with a RCX input?
(...) Use a resistor to make one of the states of the switch read less than a full short. Setup as a light sensor. 0 means off 50~ means one state and 100 means another. This is the basis for alot of the touch sensor multipliers. I am sure if you (...) (22 years ago, 25-Mar-02, to lugnet.robotics, lugnet.robotics.rcx)

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