= Welcome to the Lantaarnpaal WiFi project =

== Aim and scope ==
The aim of the project is to develop a node built inside the famous, [http://www.wirelessleiden.nl/album/index.php/hardware/LeidseLantaarn historic Leyden street lantern]. A street lantern has interesting potential to function as a wifi spot: optimum locations, availability of electric power (at least at night), easily recognizable for users (such as tourists). 

There are also '''challenges''': 
- no local internet connection; 
- power is switched off during daylight hours (at least for the coming years); 
- hardware should not interfere with historic character; 
- possible radio interference.

== Local internet connection ==
Potential solutions:
- wifi interlink to nearby Wireless Leiden node
- use of ethernet over power line

== Power supply ==
As long as power is switched off during daylight hours we will need a local battery. The battery should be as small as possible and allow a large number of discharge cycles.

== Hardware configuration ==
The antennas should be placed inside the hood and above the mirror plate (see the [http://www.wirelessleiden.nl/album/index.php/hardware/LeidseLantaarn drawings]. One solution would be to use a raspberrypi-2 or -3 with usb-wifi-dongles. Ideally the poweradapter and battery pack should also be located inside the hood (no installation work in lantern base).

== Radio interference ==
In the setup with wifi-interlinks (5 GHz) and two accesspoints (both 802.11g and 802.11a) there are four antennas in the hood, closely spaced (30 cm). Moreover the construction of the hood may interfere with the radio signals.

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