In Nagios Blinkenlights I wrote that we where building a map in order to visualize Nagios monitoring results for the OpenLDAP LDAP directory, Exim SMTP and Dovecot IMAP servers which we've deployed all over the place. The map is completed and here is a small inset of it: I'm very pleased with it. Thomas designed the electronics, and he's started to describe the layout (in German). Olaf did the wiring, and I organized a hard plastic board. The parts for the electronics totalled EUR(Euro) 30 plus an additional EUR(Euro) 5 for the board itself. The software is quite simple, and I've slapped it up here.