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December 15, 2005
The Pringle Enigma plus first rotor wiring (WARNING - EDITED)
No not the mystery of who ate all of Harry's Pringles (Harry did), but the mystery of how to turn a Pringles can into an Enigma machine. Well almost. You can download the (Blue Peter style) plans
They will be more use to you once all the settings have been revealed. So far we have had four correct submissions for Challenge 8B and we are hoping to get a lot more. For now here is the wiring for Rotor
21, 26, 9, 23, 28, 14, 5, 20, 13, 25, 31, 27, 33, 8, 1, 0, 18, 30, 11, 4, 6, 16, 24, 3, 7, 15, 2, 17, 10, 29, 32, 35, 19, 12, 22, 34
Remember there are 36 pins on the rotor and I have numbered them 0 to 35. The first one (one) is connected to pin 21 on the other side, while the second (two) is connected to 26 and so on. The numbering is given round the edge of the wheel so it goes clockwise on one face and anticlockwise on the other (i.e., pin 1 on one side is adjacent to (but not connected to) pin 1 on the other side, and pin 2 is adjacent to pin 2 on the other side but connected to pin 26 and so on.
I will publish some info about the other rotor and the punchcard later on.
Seasons greetings , enjoy the Pringles,
Posted by Harry at December 15, 2005 02:12 PM
Comments
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Harry, the punchcard and rotor wirings diagrams are too small to fit round my Pringle can! Do I have an abnormally big can, and/or is there a way I can make them bigger without having to measure and draw more out?
I did set them up so if you print actual size they should come out OK. Otherwise you need to use the scale option in the print dialog to make them print a bit bigger. Harry]
Posted by: Help at December 17, 2005 05:03 PM
Any chance of the wiring settings for rotor 2 to be confirmed?
[Maybe later. Harry]
Posted by: Josh at December 16, 2005 06:13 PM
This is just too confusing. Why am I so stupid? I just can't stand this any more. There isn't anyone to talk to who even understands what I am supposed to be trying to do.
Posted by: 3vil at December 16, 2005 10:14 AM
Harry, I think you might have made a mistake in the wiring explanation. You say that the first one (zero) goes to 21, whereas its the first one (one) that goest to 21, and zero is the last one.
[Thanks, Ben mentioned this too but I hadn't realised I had been this explicit. I've edited the instructions. Harry]
Posted by: Stephen Harris at December 16, 2005 12:15 AM
Is anybody else finding it harder now after this clue? My program doesn't understand the new wirings.
[You need to count starting with 1 at the top of the rotor (12 o'clock position), then 2, 3 etc. clockwise round it finishing at 36 which (mod 36) represents 0. Harry]
Posted by: 3 at December 15, 2005 11:10 PM
Harry, im confused. The wiring seems to suggest that one letter goes back to itself, but I can't see one like that on the rotor.
[No I think 30 goes to 29! The numbering starts with 1 at the top. (Why not 0? Because I was thinking of 0 as 36 mod 36. Harry]
Posted by: Stephen Harris at December 15, 2005 10:11 PM
Urk.. you havn't got it completely wrong...its from the other side...damn you Harry :/
[I do explain this in the text! It has to be. Harry]
Posted by: Captain Cool at December 15, 2005 09:56 PM
Erm.. you didn't change the colours of the reflector in the pringles thing...it's just completely wrong - or at least completely different to the photograph in the other pdf.
Posted by: Captain Cool at December 15, 2005 09:54 PM
Harry, did you really have to change all the reflector colourings? :/
[I didn't. Harry]
Posted by: Captain Cool at December 15, 2005 09:51 PM
Why is the PDF different from the list? - in the list it starts 0->21, but the pdf the line drawn is 0->20.
[That might be my mistake, I'll check tomorrow morning. Thanks, Harry]
[Update: In the list it goes 1 ->21 and on the diagram it goes 0->20. I guess that is confusing, but as remarked on the Pringle Engima instructions it doesn't really matter since the change just reflects a different starting position for the rotor. If you like you can think of it as the ring setting changing, if you know about the ring setting on an Enigma. If it makes you uncomfortable then you can use the modified version with the arrow pointing from 1 to 21 instead: www.cipher.maths.soton.ac.uk/Pringleupdate.pdf . Harry]
Posted by: 3n at December 15, 2005 09:30 PM
I don't see how this fits with the picture of the rotor.
[Label the pins 1,2,3 ,..., 35, 0 starting with 1 at the top going round clockwise, so for example 30 goes to 29. Harry]
Posted by: 0.0 at December 15, 2005 09:03 PM
I make pin 29 wired to itself - is this right?
Kati
[That's because you are counting 0, 1 ,2 from the top rather than 1,2,3 ... Harry]
Posted by: Katriel Cohn-Gordon at December 15, 2005 08:51 PM
That was confusing! It took me up untill now to work out how to convert your connections to what I'd been working with. Damn me! I did it to start with the opposite way around (so the connector on the opposite side to the one on the near side). Damn.
Posted by: Tony at December 15, 2005 08:35 PM
Can the rotors still be the wrong way round?
Posted by: 3vil at December 15, 2005 07:48 PM
Oh dear, you're not sending all the wirings are you?
[Not yet. Harry]
Posted by: Jason at December 15, 2005 05:07 PM
Harry, have you got one that uses a giant toblerone - I'd much prefer to con my parents into buying one of those :D
[You need two giant Toblerones to make a base :) Harry]
Posted by: Mike at December 15, 2005 04:51 PM
Harry
I can't see the Rotor 1 wiring. Is that me or is something wrong with the website?
When I can see it my next query might be answered. You say Pin 0 connects to 21 and 1 to 26. Assuming you are referring to Rotor 1, it looks more like 0 connects to 20 and 1 to 25. Of course I may not have used the same pin 0 - I used the one at the top centre as pin 0.
[I'm really really really really sorry I got held up in traffic. They are there now. As you say - different numbering convention. Harry]
Posted by: Emily at December 15, 2005 04:32 PM
Where are the rotor 1 wirings? I can't seem to find them.
[I'm really, really sorry I got held up in traffic. They are there now. Harry]
Posted by: Bryn at December 15, 2005 04:18 PM
Yes!!! All at once! All at once! All at once!
Posted by: Nebster at December 15, 2005 03:49 PM
Do you mean you've given the wirings for rotor 1? Where are they?
[I'm really sorry I got held up in traffic. They are there now. Harry]
Posted by: Will at December 15, 2005 03:46 PM
Where are the wirings?! :o
Kati
[Sorry, I got held up in traffic, they are there now. Harry]
Posted by: Katriel Cohn-Gordon at December 15, 2005 03:35 PM
spose not then lol actually id rather have a small bit of a challenge left anyways :)
how is everyone anyway? what does everyone think about that idea harry had with us all meeting at southampton please express your interest :) :) :)
Posted by: Martyn compton at December 15, 2005 03:18 PM
Harry, are you not publishing the rotor 2 wirings as well?
[Do you really want everything all at once? Harry]
Posted by: Stephen Harris at December 15, 2005 02:44 PM