SpaceAPI:Button

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Projects
Spacebutton acta.jpg
Participants Brainsmoke, Guido, Realitygaps
Skills nanode, arduino, basic electronics
Status Dormant
Niche Electronics
Purpose Infrastructure

Todo

  • Get a better casing
  • Integrate with TISSEO(?)

Nanode code

https://github.com/techinc/SpaceButton

(and EtherCard fork) https://github.com/techinc/ethercard

The code uses DHCP to obtain an IP address and find a gateway.

Wiring

The button is a circuit breaker. Connected to pin 3, it pulls this input pin to ground when not pressed.

The code enables the internal pull-up resistor, so no external one is needed.


The LED is connected to pin 5, also using a pull-down circuit. (So the led should be *on*, when pin 5 is low.)

Troubleshooting

The LED blinks:

  • every four seconds: No link
  • every two seconds: No DHCP
  • every second: No DNS
  • twice a second: Changing the space state, but no response yet from the server
  • two seconds on, two seconds off: 'upstream' space state unknown.

Power

The nanode is now powered through a USB-port.

DO NOT power it using 9V. There are some issues with the voltage regulator (which is not used when fed through (5V) USB.)

Notification App

An Android app is available to monitor the current state of the space and notify when it changes. The source code is available on GitHub: Source


The app can be downloaded from Google Play or GitHub


Spacebutton iterations

Spacebutton tmpinc.jpg Spacebutton acta.jpg