Node Hardware Design

The following images shows the latest node enclosure design. It includes the single-board computer (Alix 2d2), a 15 VDC power supply, a Vaisala GMP-343 Carbon Dioxide density sensor (0-2000 parts-per-million by volume), an 802.11 a/b/g (Wistron CM-9 100 mW) radio with an externally mounted 8 dBi omnidirectional antenna, an 900 MHz 802.11 radio (Ubiquiti SR9 700 mW) with a 6.5 dBi omnidirectional antenna.

See the schematic drawings for details of the node design:

• Mechanical drawings of the mouting plate for the VaisalaWXT510
• Mechanical drawings of the electronics mounting.
• Wiring connections for the Soekris, Vaisala and N2Power supply.