| Created by |
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| Created | January 15, 2013 |
| Last modified | February 25, 2013 |
| Tags | complex fun lights puzzle |
This is a puzzle box consisting of only lights, switches, and a power source. I am trying to build this as a gag gift for a friend, but I'm having trouble getting the lights to behave according to the table. I've actually seen it done this way, I am just having difficulty duplicating it.
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I am having trouble making this work properly. The resistors are actually light bulbs (not LEDs) and, using only the equipment shown (power source, lights, wire, and switches only), the switch positions must cause the lights to operate according to the list on the right. As it is currently drawn, only 3 of the 8 different combinations function as required. (I have actually seen this built as the requirements demand, I just can't figure it out myself. (Switches listed are CLOSED) |
January 28, 2013 |
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If anyone can help figure out the correct wiring, I'd really appreciate it. I have an electrical engineer friend of mine that's been scratching his head about it for weeks and neither of us have been able to build it yet to meet the specific requirements as written in the drawing. We're trying to put it together as a gag gift for another friend of ours. |
January 28, 2013 |
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I don't see a list of your requirements. However, just looking at it with only SW1 closed and all others opened, according to what is listed in Orange and Green lights, you are going to draw over 100 Amps, which is not ideal. What is your power source for 100 V? Are you going to be plugging this into a wall or use a battery? If you can give me a list of requirements I can try to help you a little more. |
February 25, 2013 |
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Looking at the switching, SW1 MUST be closed in order for the circuit to work, so is this your primary power switch? SW 2 and SW 4, if either or both of those are closed your going to be sending your signal straight to ground, so you will get no lights, is this what you intended? Only a closed SW1 and 3 would allow for all the lights to operate. |
February 25, 2013 |
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My apologies. I started working on it again and deleted the text boxes that included the combinations/requirements. So, to prevent that from being a problem again, I will list them here. Listed switches are 'closed' and listed lights are 'on'. SW1 -- Green + Orange; SW1 + SW2 -- Red 1 + Red 2 + Orange; SW1 + SW3 -- All Lights 'On'; SW1 + SW4 -- Red 2 + Orange; SW1 + SW2 + SW3 -- Orange; SW1 + SW3 + SW4 -- Red 1 + Orange; SW1 + SW2 + SW4 (OR ALL Switches 'Closed') -- Red 1 + Green + Orange. As I stated before, the current configuration of items in the diagram only allow 3 of those combinations to function as required. The power supply and resistance are for qualitative analysis only. This will actually be operating on a 9V battery with very small bulbs, I just used 500 milliohms and 100V for ease of analysis while 'building' the circuit with this program. |
February 25, 2013 |
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Ok, so after looking at this, your SW 2 and 4 are going straight to ground, meaning anything with SW 2 or 4 or both closed, the only light that will illuminate will be the orange. The way you have the Green positioned, anything with a closed SW 1,3 will illuminate all three. I don't have a lot of time right now, but I will take a look again later. Try a redesign, you are on the right path I think, have you though about using digital logic instead? |
February 25, 2013 |
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The main reason for only using bulbs, wire, and switches vice electronic/solid state components is the nature of the challenge. I have actually seen this work as the requirements are listed (that's where I got the "logic" table from for which bulbs/switches to use) having been only constructed with these components. (They opened the box long enough to prove that there were no diodes or other digital components inside but not long enough for anyone to see which wires go where) The version of it that I've seen did plug into a wall outlet, but it used a DC power supply so I know it can be done with DC. |
February 26, 2013 |
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