Receivers Limit

[dolittle]

Hi,

I saw a few posts that discussed "Use all 4 IR receivers" which appears to a be a limit, I don't have so many, and I am not yet skilled enough to do it, but I think that engineering wise there shouldn't be any limit.

Here is why:

You could use on of those IR receivers to be your "switching" guy, i.e. it moves a mechanical "something" that allows you to extend those 3 other channels to do more than just 3 things, for example, move a gear from one place to another which will shift a different axle

Has anyone thought, used or tried this out?

Thanks,

Noam

[Zerobricks]

8043 is an example of a multiplexer. One motor is sacrifised to swith cunctions of other 3.

[dolittle]

8043 is an example of a multiplexer. One motor is sacrifised to swith cunctions of other 3.

Ok, good to know, is there any other way to do it? are there LEGO approved electrical switches? that in theory would be a lot more easier to extend then a gear switch

[Zerobricks]

There is a PF switch, yeah and you can insert an axle through it, to toggle it.

[dolittle]

There is a PF switch, yeah and you can insert an axle through it, to toggle it.

This switch has - apparently - two states?

If so, it doesn't really extend the limit, unless you can use two switches in an opposite/complement mode - so that you are essentially creating a XOR bridge (A on B off => A on, A off and B on => B on).

[Sam42]

ooooh boolean algebra......

[Kaijuu]

This switch has - apparently - two states?

If so, it doesn't really extend the limit, unless you can use two switches in an opposite/complement mode - so that you are essentially creating a XOR bridge (A on B off => A on, A off and B on => B on).

No, you can't. Unless LEGO churns out something of a two-way switch, the way it was done in the 8043 is at this moment the only official way to drive six functions with three motors, with one extra to do the switch.

So theoratically you can drive fourteen functions with eight motors, although I fear that the amount of friction of seven mechanical gear switches might be a bit too much.

[SuperCow]

You could use the switch, it changes the polarity, you could use that to power the receivers, but you have to hack the extension cable

[Zerobricks]

You could extend by using another PF receiver which would controll a motor who would move another transmmiter