[Rack] minotaur is down

Jake jake at spaz.org
Sat Jul 6 00:15:18 UTC 2013


yeah you said that last time and i ended up just building another serial 
one, and it has been working fine.  it's a nice point-to-point link 
between a PASSWORD ENTRY PAD and the computer it talks to.

have you thought about the challenges in getting an arduino to encrypt a 
7-digit number in a way that can't be cracked by people listening on the 
network?  Or are you going to have a dedicated subnetwork and dedicated 
ethernet port on minotaur just for these two keypads (which already work)

-jake

On Fri, 5 Jul 2013, Jonathan Lassoff wrote:

> So, so, so, so awesome!
>
> Thanks for all your help and gear this afternoon, Ben. I had a fun time.
>
>
> I think making the keypads run on Ethernet Arduinos is the best way to
> do this. We have two Etherten boards (Jake has one I was poking at,
> and it sounds like Ben has another).
> We're stretching the maximum lengths for RS232 (though it seems to
> just work just fine at low bauds), but we're at a good distance for
> 10/100 Ethernet.
> Ethernet/IP also has the advantage of being really easy to address
> from software.
>
> It's also going to be increasingly easier to scrounge Ethernet gear
> than Serial stuff.
>
> On Fri, Jul 5, 2013 at 4:48 PM, Ben Kochie <ben at nerp.net> wrote:
>> Yea, I just got the new box up with base OS install.  I'm starting the file
>> copy from the old machine's drive now.
>>
>> The old box is still up on the wall and will stay there until you or gravity
>> win.
>>
>> As soo as I finish copy files and buttoning up the box, I'll put it up in
>> the rack by the wall o tubes.
>>
>> Please be careful, the serail ports are barely secured.  I plan to fix this
>> later this weekend.
>>
>>
>> -ben
>>
>> On Fri, 5 Jul 2013, Jake wrote:
>>
>>> that's great that minotaur will be back up soon!
>>>
>>> what will happen to the old motherboard?  i want it.
>>>
>>> it is not necessary to get a PCI card for serial ports.  I have plenty of
>>> USB to RS232 adaptors for the various routers, and if the system has two
>>> native ports that's enough for the two keypads so we should be good.
>>>
>>> There is a USB to RS232 adaptor present which goes to a cat5 cable which
>>> goes to the RFID reader by the door.  Please plug it into the new computer
>>> so we can continue to try to get the RFID reader to work properly. Someone
>>> is actually working on it this week!
>>>
>>> if we get RFID to work, we can put a tag on every tool at noisebridge!
>>>
>>> On Fri, 5 Jul 2013, Ben Kochie wrote:
>>>
>>>> Ok, I will try and get the base system up and running as it was.
>>>>
>>>> The new system will have a minimized root filesystem on SSD.  Home and
>>>> data storage will be provided by a new 750G drive.  This is stuff I picked
>>>> up for another project that never got done.
>>>>
>>>> One thing we could do is order one of these:
>>>> http://www.newegg.com/Product/Product.aspx?Item=N82E16815158166
>>>>
>>>> -ben
>>>>
>>>> On Fri, 5 Jul 2013, Jake wrote:
>>>>
>>>>> well, the payphone is one physical serial port, and the upstairs keypad
>>>>> is another.  These are important because they are actual RS232 lines running
>>>>> long distances (like in the 1970's) and they are pretty mission-critical
>>>>> (literally in the mission) and the extra USB-serial layer would suck for
>>>>> that.  so i'm glad we don't need to do that.
>>>>>
>>>>> it used to be that there were serial ports out to each net appliance,
>>>>> for remote management.  I think that can be done over USB serial adaptor
>>>>> just fine, and if we need more i know where they are hiding.
>>>>>
>>>>> you will notice a four-way plug that has yellow and black wires, and
>>>>> goes to the blue serial cables.  Those are 12v power for the payphone and
>>>>> upstairs keypad.  On minotaur there was a jack on the motherboard that
>>>>> happened to put out 12v like that, so that's what that is.  If you find a
>>>>> way to power those from the new situation that would be great.
>>>>>
>>>>> i hope that the minotaur downtime doesn't get confused with the new door
>>>>> access policy.
>>>>>
>>>>> -jake
>>>>>
>>>>> On Fri, 5 Jul 2013, Ben Kochie wrote:
>>>>>
>>>>>> It has 3 physical serial ports, and USB.  Is that enough?
>>>>>>
>>>>>> -ben
>>>>>>
>>>>>> On Fri, 5 Jul 2013, Jake wrote:
>>>>>>
>>>>>>> ahhh fuck.  i don't suppose it has physical serial ports?
>>>>>>>
>>>>>>> On Fri, 5 Jul 2013, Ben Kochie wrote:
>>>>>>>
>>>>>>>> Yes, something is fucked up with the mainboard.  We tried two new
>>>>>>>> hard drives, they would not boot.
>>>>>>>>
>>>>>>>> We have a new box that we're bootstrapping now.
>>>>>>>>
>>>>>>>> -ben
>>>>>>>>
>>>>>>>> On Fri, 5 Jul 2013, Jake wrote:
>>>>>>>>
>>>>>>>>> this computer runs the payphone keypad, upstairs keypad, and opens
>>>>>>>>> the door for people.  it also does DNS at noisebridge.  is it being
>>>>>>>>> repaired?
>>>>>>>>>
>>>>>>>>> jake at pony:~$ ping minotaur.noise
>>>>>>>>> PING minotaur.noise (172.30.0.4) 56(84) bytes of data.
>>>>>>>>>>
>>>>>>>>>> From pony (172.30.0.30) icmp_seq=1 Destination Host Unreachable
>>>>>>>>>> From pony (172.30.0.30) icmp_seq=2 Destination Host Unreachable
>>>>>>>>>> From pony (172.30.0.30) icmp_seq=3 Destination Host Unreachable
>>>>>>>>>
>>>>>>>>> ^C
>>>>>>>>> --- minotaur.noise ping statistics ---
>>>>>>>>> 5 packets transmitted, 0 received, +3 errors, 100% packet loss, time
>>>>>>>>> 4168ms pipe 3
>>>>>>>>> _______________________________________________
>>>>>>>>> Rack mailing list
>>>>>>>>> Rack at lists.noisebridge.net
>>>>>>>>> https://www.noisebridge.net/mailman/listinfo/rack
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
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