Incredibly genius!! Your sensor machine is an awesome invention. I still can't understand the reason why it works, hehe (I didn't read all the pages), this seems to be above my IQ capacity!!! (humble me). I think I understand the way it goes with the light level and the water, but why and how the piston is triggered!!?? Is it because the dirt changing to grass makes an update of the block beside the piston so this one is triggered when the aspect of the block(s) is (are) changing?? I don't understand the way the piston behave in your machine. But to conclude... wow!! this light sensor machine is one of the best mechanism I've seen in MC!! Thousand thumbs up!!!
* could you please make a schematic with the 12x one? *
Incredibly genius!! Your sensor machine is an awesome invention. I still can't understand the reason why it works, hehe (I didn't read all the pages), this seems to be above my IQ capacity!!! (humble me). I think I understand the way it goes with the light level and the water, but why and how the piston is triggered!!?? Is it because the dirt changing to grass makes an update of the block beside the piston so this one is triggered when the aspect of the block(s) is (are) changing?? I don't understand the way the piston behave in your machine. But to conclude... wow!! this light sensor machine is one of the best mechanism I've seen in MC!! Thousand thumbs up!!!
* could you please make a schematic with the 12x one? *
Thank you!
The pistons function as BUD switches, which you can read about on the wiki. In short, this device exploits a bug in the game to put pistons in a state where they are getting power but remain retracted because they haven't "noticed" it yet. Grass growing or dying beside them causes them to "wake up", notice the power, and extend.
I will add a schematic and other material for the 12x as soon as I get the chance.
The pistons function as BUD switches, which you can read about on the wiki. In short, this device exploits a bug in the game to put pistons in a state where they are getting power but remain retracted because they haven't "noticed" it yet. Grass growing or dying beside them causes them to "wake up", notice the power, and extend.
I will add a schematic and other material for the 12x as soon as I get the chance.
ok!!!
It's a bit clearer now... I had exploited that bug in the past with arrow-pressure plate detector and on/off switch with pistons and a minecart looping beside them to update the clock.
Thanks for the useful link!
And like I said, your system is wonderful.
Thank you for replying!
first: great thanks for this EXCELENT tutorials! They're very good to follow. I build a 7x light sensor in my survival world for streetlights and city-gates and it works fine, but it takes quite long to detect night where as it needs just a few seconds to detect day I made sure to build the 7x exactly as shown in the video. Is there a possibility to shorten the night-detection-time (ndt)?
What makes it hard to detect night faster is a) the machine needs to wait until it's very dark to be sure that it's night and not just raining and as of MC 1.2, grass dies a lot slower than it grows. The best advice I can give you is to upgrade to the 12x, but I'm open to suggestions.
I am assuming it is the most sensitive and accurate (instead of waiting like 1-2 minutes after day/night for actual activation), out of all the available options in the original post?
I have been trying to get the nano to work in the snapshot for 1.3, and its no longer working. I have built the old style that Etho built back in 1.7.3 without issues, haven't checked it to see if its still working at that base. I stood there and watched the grass grow, and the BUD just didnt change. Also the grass grew at night, with a light chimney with no light sources reaching it from above, and the redstone torches inside that are needed.
Specifically having issues with the underground nano version, the normal one works fine for me, as does the one in my old base.
Scratch that didn't notice the one torch position properly... Just a daily dose of feeling like a moron.
i got a question about the 12X version becaus you recomend that 1 and i am really intersiting about light sensors
how many seconds do it takes to switch on/off? i really want to know becaus i have now a kind of 4X nano based light sensor from someone on youtube he works fine 4-6 seconds to switch on/off thats good enough but i like to learn redstone and i wanted to have a compact and really fast 1.
thanks in advance
and have a nice day
Sedawan
There is a way to calculate the times, but the grass growing/dying rates changed in Minecraft 1.2 and I haven't gotten around to crunching the numbers again. I can tell you that there is a lot of variation in the timing, and no upper bound. The average time is going to be a couple of seconds, but it will take over 30 seconds somewhere around 1% of the time. Regardless, the 12x is definitely going to be a lot faster than four Nanos chained together.
I've recently been experiencing an odd issue with my 12x sensor. At night, the system works fine and all my lighting comes on, but when dawn hits and the system goes back into 'daytime' mode, the sensor spazzes out and both rows of BUD switches toggle on and off constantly. While the resulting lightshow in my yard was amusing the first few times, going over to the sensor to reset it every morning has become a little frustrating. To the best of my knowledge nothing has been changed with the sensor, which makes this even more confusing. It's been working fine for a while now, but suddenly started acting up, and I'd really rather not rebuild the entire machine.
I've recently been experiencing an odd issue with my 12x sensor. At night, the system works fine and all my lighting comes on, but when dawn hits and the system goes back into 'daytime' mode, the sensor spazzes out and both rows of BUD switches toggle on and off constantly. While the resulting lightshow in my yard was amusing the first few times, going over to the sensor to reset it every morning has become a little frustrating. To the best of my knowledge nothing has been changed with the sensor, which makes this even more confusing. It's been working fine for a while now, but suddenly started acting up, and I'd really rather not rebuild the entire machine.
All I can tell you is to look over it block by block and make sure everything is exactly right, particularly the wiring and the repeater settings. There's gotta be a subtle mistake somewhere.
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Excellent OP. I think I saw your prototype 12x sensor on youtube a while back. Great post, and I'll definitely be using your design. I've built a structure, wired a bunch of redstone, and I was on the hunt for a compact and fast redstone photocell. Can't wait to add my day/night sensor tower to my build!
All I can tell you is to look over it block by block and make sure everything is exactly right, particularly the wiring and the repeater settings. There's gotta be a subtle mistake somewhere.
After some digging around I figured out the problem - somehow each row of BUD switches magically had a piston missing. I'm not sure how or why it happened because as far as I can tell no one had been inside the machine, but removing and replacing the BUD pistons fixed the issue.
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Here's a cool picture of the structure I built with automatic redstone lamps at night. Your photocell 12x design is encased in the rectangular tower on the right
It works just like the Nano and has the same sensitivity, but it's only 3x3x5 (instead of 3x4x6). I actually posted this design back on page 7, but I didn't think it was worth building until we could get ice with silk touch, which we can in a few days from now.
I'll update the first post when I get a chance. Enjoy!
* could you please make a schematic with the 12x one? *
Thank you!
The pistons function as BUD switches, which you can read about on the wiki. In short, this device exploits a bug in the game to put pistons in a state where they are getting power but remain retracted because they haven't "noticed" it yet. Grass growing or dying beside them causes them to "wake up", notice the power, and extend.
I will add a schematic and other material for the 12x as soon as I get the chance.
ok!!!
It's a bit clearer now... I had exploited that bug in the past with arrow-pressure plate detector and on/off switch with pistons and a minecart looping beside them to update the clock.
Thanks for the useful link!
And like I said, your system is wonderful.
Thank you for replying!
What makes it hard to detect night faster is a) the machine needs to wait until it's very dark to be sure that it's night and not just raining and as of MC 1.2, grass dies a lot slower than it grows. The best advice I can give you is to upgrade to the 12x, but I'm open to suggestions.
I am assuming it is the most sensitive and accurate (instead of waiting like 1-2 minutes after day/night for actual activation), out of all the available options in the original post?
I have been trying to get the nano to work in the snapshot for 1.3, and its no longer working. I have built the old style that Etho built back in 1.7.3 without issues, haven't checked it to see if its still working at that base. I stood there and watched the grass grow, and the BUD just didnt change. Also the grass grew at night, with a light chimney with no light sources reaching it from above, and the redstone torches inside that are needed.
Specifically having issues with the underground nano version, the normal one works fine for me, as does the one in my old base.
Scratch that didn't notice the one torch position properly... Just a daily dose of feeling like a moron.
We just built one on the Nativ server which is running 12w26a and it works great.
There is a way to calculate the times, but the grass growing/dying rates changed in Minecraft 1.2 and I haven't gotten around to crunching the numbers again. I can tell you that there is a lot of variation in the timing, and no upper bound. The average time is going to be a couple of seconds, but it will take over 30 seconds somewhere around 1% of the time. Regardless, the 12x is definitely going to be a lot faster than four Nanos chained together.
All I can tell you is to look over it block by block and make sure everything is exactly right, particularly the wiring and the repeater settings. There's gotta be a subtle mistake somewhere.
After some digging around I figured out the problem - somehow each row of BUD switches magically had a piston missing. I'm not sure how or why it happened because as far as I can tell no one had been inside the machine, but removing and replacing the BUD pistons fixed the issue.
It works just like the Nano and has the same sensitivity, but it's only 3x3x5 (instead of 3x4x6). I actually posted this design back on page 7, but I didn't think it was worth building until we could get ice with silk touch, which we can in a few days from now.
I'll update the first post when I get a chance. Enjoy!
I can't even come up with something more sophisticated then that, but I'll say it again:
****ING BRILLIANT!
keep up the great work man.