H4E1 - 11 - AID FOR MOBILE PHONE

Marco Polo

Presentation of the case: 

Cyriel is a 56-year-old man. He is single and lives in an apartment. He is a sweet, warm and wise man. Cyriel is blind, he only sees a white or black area. Before going blind, Cyriel was a graphic designer. He is still very creative and thinks very problem-solving. 

Request for help: 

Cyriel has a telephone and a smartphone. It's hard for him to find them when they don't produce any sound. This problem mainly occurs in his living room, which is a space of 5m by 7m. Cyriel wants a compact solution, with which he can find his telephone/smartphone, EVEN when their battery is dead.

The tool would save Cyriel a lot of searching time. In addition, in terms of safety, the tool would be a reassurance that he can find his smartphone at all times

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Build a simple cardboard device to stick to your phone so you never lose it. The device makes sound for 5 seconds triggered by a sound command like clapping. This makes it able for you to locate your phone without the use of a different device to call it.

#HOWEST #H4E1 #D4E1

• micro:bit
• micro:bit battery pack
• micro:bit protection case
• Thin cardboard

This is the code for Marco Polo. In this code, we programmed a micro:bit to listen to it’s surroundings. When the bit detects a sound over 140, it counts this as a ‘clap’ that our user would make. Then the program starts a timer of 3 seconds, the time that our user has to make a second clap. This value of 3 seconds was chosen so that our user could have enough time to clap twice, so he wouldn’t have to hurry too much. When the user doesn’t clap a second time, the program resets for a new ‘clapping session’. If the user does clap a second time, it gets registered with the program and the device plays a short tune. This way, our user can locate their phone easily, and clap a second time when they haven’t found it yet.

Put the Micro:bit in the case but don't fasten the nuts of the bolts as we will fold the cardboard around it and these will hold it in place.

Cut a rectangle 9.5cm by 20cm out of the cardboard and use the protection plate to position the holes for the bolts. The remaining cardboard that is too long is used to hold the cardboard in place. Now fold the extending cardboard sides inside so the components are fully covered.