NrfSensorNode

NURDspace Project
Participants	Dennis
Skills
Status
Niche
Purpose
Tool
Location
Cost
Tool category

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Current situation

Spacenanny

Spacenanny is the master node (node0) in the nrf network it takes care of transmitting the received sensor data to graphite (running on graphite.nurdspace.lan) the current code runs from a screen under the user nanny in the window called NRF this is how you restart it

sudo bash
cd /home/nanny/NrfPiNode
while true ; do ./NrfPiNode ; sleep 1 ; done

The nodes

• 1 Located near slab
  • Temperature
  • Pressure
  • Humidity
• 2 Located near the front door (Only for relaying data from its child nodes)
  • 12 Doorbell node
    • Listen for a doorbell press
    • Temperature
• 3 Skip button
  • Pulse contact for skipping the current track

NRF Sensor node

• See https://gigafreak.net/stats/hardware.php

PCB

• The first batch of pcb's has been ordered.

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Features

• ISP Header
• 1wire built in
• DHTxx (11,21,22) onboard

Parts

• R1 4.7k 1206 resistor (OneWire pullup)
• R2 4.7k 1206 resistor (DHT pullup)
• IC1 3.3v voltage regulator (AMS1117 AMS117-3.3 3.3V)
• C1,2 10uf Cap
• 3 x 15 pins male pin header
• 2 x 12 pins female header
• 2 x 4 pins female header

Low Power PCB

Wishlist

• Mostly SMD (to save space)
• Same as the standard board features.
• Battery monitor
• NRF Interrupt pin connectable (for feature use)
• add more

Order

PCB

• http://smart-prototyping.com/
  • 10 x 7.23 euro
  • 50 x 25.61 euro

• zarya 10 x
• dreamer 5 x
• maze 10 x
• niz 5 x
• buzz 5x

Ebay part list

• 50 x 3.3v reg http://www.ebay.com/itm/300745587816 (3.40 USD)
• 10 x nrf24l01 http://www.ebay.com/itm/390678174596 (9.97 USD)
• 10 x http://www.ebay.com/itm/400389882462 (28.88 USD)
• 10x http://www.ebay.com/itm/130702483183 (18 USD)

Part request list

• niz
  • 5 x arduino pro mini
  • 5 x nrf24l01
  • 5 x regulator
• buzz
  • 5 x arduino pro mini
  • 5 x nrf24l01
  • 5 x regulator