DAY3 intern in Deutschland : Radio signal

Today we continue to focus on communication but via wireless(Radio signal and Bluetooth)

How far radio signal in Calliope can go?

Testing range of radio signal in Calliope

So, we programmed Calliope to send signal to others by pressing A button. If it send, RGB LED will bright blue. If it receive signal RGB LED will turn to red and have sound like “Peep”.

Used 2 Calliope in this experiment, we gradually step backward from each other while pressing the button until there is one of us cannot hear sound. We have to say that range of Calliope’s radio signal is around 20 meters but not sure because there is wall and corner at the end of aisle, I think it’s effect to signal.

They’re talking to each other

Calliope send signal to the others in same group

All of them already has same code: They will random 1–10 seconds to send signal after received from the others, Except setting group(I will explain it in next subtopic). I assigned 2 different groups: As you can see in the picture 2 Calliopes on left side is in group 0 and another one is in group 1.

Grouping

In case that we assigned groups, the first 8 bits of the signal indicates the group. If we want to send the signal to specific calliope, we have to write the code in separate cases. The calliope can also communicate with the micro:bit by using the radio signal.

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Diet & Skincare enthusiast / Fitness Nutrition Specialist FIT Thailand #AiFitLog / Developer

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Yanisa H. #AiFitLog

Yanisa H. #AiFitLog

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Diet & Skincare enthusiast / Fitness Nutrition Specialist FIT Thailand #AiFitLog / Developer