Archive: 6 posts

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I recently made a Nnull gate (it means NOT EQUAL TO 0) with a selector using comphermc's method, and found a big problem. How does it work ? When any signal but 0 comes in, the selector goes to second output. But since the second output is looping to the first input, as soon as the second input becomes off, the selector comes back to first output. I know, hard to follow. When the 2nd input is on, 2nd output is on, and vice versa. This is useful to turn any signal into a 100% positive signal. The problem is when you hook two analog signals to the inputs of a combiner and hook the combiner to the selector. Even if the signal coming out of the combiner is not 0, the selector doesn't move! Why? How? Is it a bug from the game? Now LBP.me lags so I cant post my pic... EDIT : I just saw that when you do a subtraction, the combiner outputs a dark wire, but when you just plug something to one output, it is light. Mmmm. AAARG, LBP.me still broken. This annoys me.

2011-08-07 19:08:00 Author: Unknown User

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yeah, selectors ignore the analog signal and use digital signal only, for that reason it's use as a Nnull gate becomes application specific, where you know there will be a digital on signal. there are 2 methods i know of to reliably detect "not equal to 0" the first is a positional sequencer with a single battery filling the whole thing. this is reliable and detects even tiny analog signals but has 1 simulation frame of latency both when it detects a signal and when it no longer detects a signal the other way requires a sackbot. you place one somewhere where it wont be seen and put anti grav with dampening and a controlinator on it's chip, wire your analog signal to either L2 or R2, then wire that button's output to the selector based Nnull. this is just as accurate and reliable as the sequencer method, but has no latency. only downside is it requires the sackbot

2011-08-07 20:48:00 Author: evret Posts: 612

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How does it work ? You need to familiarize yourself with analog/digital signal duality. A wire carries a separate analog and digital signal, which can be any combination. AFAIK, of all the signal probes, only Balorn's shows separate values for both signals, and he also made a tool which can merge them. Check out his thread here (https://lbpcentral.lbp-hub.com/index.php?t=44113-Logic-Probe-and-Signal-Combiner).

2011-08-07 21:56:00 Author: Aya042 Posts: 2870

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Thanks guys ! I didn't know that logic transmitted both analog and digital signals. I thought it sent analog only, which was then turned into a digital one by some tools. The problem is that when you use batteries, they send "1" signals, and then using a combiner did 1-1=0. So comphermc made a mistake when telling us to use selector-based ones in LBP2-torials. Wow, comphermc and mistake in the same sentence. Looks like nobody is perfect I found out the problem while building, but then this means I'll have to change it in all 30 chips of my Health Meter Toolkit Thanks for the logic probe! I've been using phort's probe but I guess digital value is useful too (and I guess he uses the selector-based Nnull for this ).

2011-08-09 16:39:00 Author: Unknown User

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Thanks guys ! I didn't know that logic transmitted both analog and digital signals. It's probably also worth reading rtm's analog logic blogs, starting here (http://www.lbpcentral.com/forums/entry.php?2069-Analogue-Logic-1-Fundamentals). So comphermc made a mistake when telling us to use selector-based ones in LBP2-torials. You mean the one I pointed out here (https://lbpcentral.lbp-hub.com/index.php?t=51232-LBP2-Torials-Video-Tutorials-by-comphermc&p=870399&viewfull=1#post870399)?

2011-08-09 17:03:00 Author: Aya042 Posts: 2870

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AFAIK, of all the signal probes, only Balorn's shows separate values for both signals, and he also made a tool which can merge them. Check out his thread here (https://lbpcentral.lbp-hub.com/index.php?t=44113-Logic-Probe-and-Signal-Combiner). i think it was left out of most probes coz it is so trivial, just wire into a splitter and it will show you all three digital variables, off, positive on, negative on.

2011-08-10 01:34:00 Author: evret Posts: 612

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