Semaphore

An app for the Kookaberry

Tony Strasser

Developed by
Tony Strasser

AustSTEM

This demonstrates the transmission and reception of icons and sounds over a digital network.

This adds an experiential aspect to the teaching of Outcome ST3-11DI-T of the NSW S&T(K-6) Syllabus  which describes how digital systems
represent and transmit data.

Directions

Step 1: Setup

Connect a buzzer to P2 on each of two Kookaberries.

Step 2: Running the app

Navigate to the Semaphore app and press Button B to run. Press Button C to see the screen shown below

What is showing on the screen?

  1. Top Row: Name of app
  2. Second Row:
    • Number of transmitted (Tx) signals
    • The signal being transmitted (a Wave in this case)
    • Name of this Kookaberry
  3. Third Row:
    • Number of received (Rx) signals
    • The signal being received (none yet in this case)
    • Name of the the Kookaberry sending the signal (none yet in this case)
  4. Fourth Row:
    • Button A for Exit as normal
    • Button C to send a Wave (used to send the Wave in the screenshot above)
    • Button D to send a Like
    • Button B to send a sound signal
Step 3: Using the app

Sending and receiving a Wave

Press Button C on one of the Kookaberries (John1) to transmit a Wave icon. The other Kookaberry (JULIA2) will receive it and display the name of the transmitting Kookaberry on the screen.

       

Sending and receiving a Like

Press Button D on one of the Kookaberries (John1) to transmit a Like icon. The other Kookaberry (JULIA2) will receive it and display the name of the transmitting Kookaberry on the screen.

     

Sending and receiving a Signal (a call-and-response beep sequence on the connected buzzers)

 Press Button B to create a “Call-and-response” sequence where the Tx signal is answered by all the other Kookaberries in range. Tx (Dum-Dumpty-Dum-Dum); Rx (Dum-Dum).

     

Open Questions

  1. Where is the radio chip located on the Kookaberry? Can you see the antenna/aerial?
  2. Compare this to speaking over two tin cans joined together with a taut string. Can you make such a system? What are the similarities between the taut string and the radio signal between two Kookaberries.
  3. How far apart can the Kookaberries be taken before the signal is lost?

 

 

 

 

 

 

Peripherals used by this app

Learning plans that use this app

Version:


Last updated:1 week ago


Device:Kookaberry


Radio code:


App ID:...


lib_dependencies:Kapputils.py


root_dependencies:Kappconfig.txt


Downloads


Download on GitHub
Image

Support

Issues resolved in the support forum:

8 out of 11
View support forum

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