[tech] Merlo/Dispense broken

[Andrew Adamson]

Further to this, before I left UCC today I plugged the door relay into 
motsugo, so wheel can at least open the door using serial commands.

To open the door, run the following as root on motsugo:
echo -e "\xff\x01\x01" > /dev/ttyUSB0

The above command will activate the relay, but don't leave it on else the 
lock will overheat and/or people won't be able to lock the door. To 
release the relay, as root on motsugo:
echo -e "\xff\x01\x00" > /dev/ttyUSB0

I haven't tested this after plugging it in, but there's no reason it 
shouldn't work. If it doesn't work, check out 
http://wiki.ucc.asn.au/FixDoor for more info.

Non-wheel door members can poke a wheel member on irc to open the door 
remotely.

Andrew Adamson
bob at ucc.asn.au

|"If you can't beat them, join them, and then beat them."                |
| ---Peter's Laws                                                        |

On Fri, 23 Dec 2016, Andrew Adamson wrote:

> Hi All,
> 
> A few people mentioned they couldn't dispense things so I took a look at 
> merlo, and its file system was read only.
> 
> Long story short, the most recently replaced disk is FITH, and the 
> remaining disk has bad blocks, though I could get it to mount on another 
> machine. We should be able to get the important parts copied to a new 
> disk ASAP.
> 
> Merlo's hardware is a little picky about disks I'm afraid - it won't play 
> nice with SSDs, and the case only takes 2.5" disks. I have a spare ?320GB? 
> spinning disk at home I can donate - has anyone got something about that 
> size so we can have raid again.
> 
> Alternatively we could move across to a different case, but we would need 
> something with 3 serial ports. Anyone got some pci serial cards we can 
> borrow?
> 
> In the mean time, merlo is offline, so no dispense and (more annoyingly 
> over the holidays) no door.
> 
> Andrew Adamson
> bob at ucc.asn.au
> 
> |"If you can't beat them, join them, and then beat them."                |
> | ---Peter's Laws                                                        |
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