From London Hackspace Wiki
< Equipment
Revision as of 17:06, 30 December 2015 by Kraptv (talk | contribs) (Added TODO section for pdu control)
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Hackspace Unknown.png
Sub-category Systems
Status Good working order
Consumables Unknown
Accessories Unknown
Training requirement Unknown
Training link Unknown
ACnode No
Owner LHS
Origin Aden
Location Above the front-door 'space'

Hamming is an x86-processor based VIA EPIA based system donated by User:Aden. It is old and was once doorbot. It ideally could be replaced with a modern Raspberry Pi 2 or Beaglebone Black.

It is running the daemons for the Notification Board, Orange LED Strip Moving Sign and National Rail clock - these are all connected to a powered USB hub.

It's also connected to some speakers so it can do the doorbot-sounds (historically GLaDOS voices) as well but this has been broken and out of use for a long time.

Hamming has 2 x hard drives in RAID1 - it has had the 'ticking drive sound of death' so this is likely a very good thing.

Useful note for crashes / restarts etc - run

 export AUDIODEV=hw:0,0

before rebooting or PulseAudio won't work.


Yvan was kind enough to purchase a Raspberry Pi 2 as a replacement for Hamming. It is running Ubuntu MATE (a nice prepackaged spin) and we installed almost all of the same packages from Hamming onto Hamming-Replacement.

We're hoping to use a PoE power adapter for remote power management of Hamming-Replacement but retain the powered USB hub for the various serial devices. This will be a much more flexible, power efficient system with less moving parts.


  • Add in the Mini-PDU switchoff scripts for power-conservation (and make the script non-working directory dependent)
  # switch the lobbypdu port 1 off
  50 23 * * * cd ~jasper/lobbypdu ; ./
  # and back on again
  30 8  * * * cd ~jasper/lobbypdu ; ./