12. Skin Electronics¶
I am also writing this week's my special work under my NDA folder due to confidential work for TOYOTA.
Learning outcomes¶
- Research skills: the participant has acquired knowledge through references and concept development
- Design skills: the participant learnt to program a microcontroller, design circuit and schematic
- Fabrication skills: the participant is able of integrating inputs and outputs in a microcontroller project
- Process skills: Anyone can go through the process, understand it and reproduce it
- Final outcome: Is the assignment is assembled, functioning or tested
- Originality: Has the design been thought through and elaborated?
Student checklist¶
- Document the concept, sketches, references also to artistic and scientific publications
- Design a “skin-circuit”, exploring the replication of the examples bwlow or:
- the Skin masquerade party project
- the Twinkle Nails project
- interactive tattoo
- explore how to create a new skin electronics accessory.
- Document the project and included all source files and all materials used
- Upload your design files and source code
- Make a video with your skin electronic working
- Make a short performance/concept of your project functioning (extra credit)
Research¶
References & Inspiration¶
Various studies on carsickness have shown that passengers are more likely to experience motion sickness than drivers, as drivers can anticipate and prepare for turns, whereas passengers especially back seat passengers typically cannot.
Then, I considered about the possibility to share the driver's unconscious inward head tilt just before the cornering.
What about making "a head laterally tilting indication" that can be seen by the back seat passengers so that back seat person could anticipate before the cornering and ease his/her carsickness symptom?
Tools¶
I discussed with my instructor and got several ideas to realize above mentioned indicating system, and focused following system this time.
-
coil ring with a micro-controller (coil external diameter 75mm)
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Wireless LED (color green)
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half transparent board (thickness 0.8mm)
- battery (AAA X 3 to 4)
- kite string (thickness 1.0mm)
- wire
- tape
Circuit¶
Input: coil connected 5 Volt makes magnetic field power supply up to distance 80mm (from specification sheet) distance
Output: wireless LED lights on when there is enough magnetic field
Wireless_LED Transmitter (Coil and Timer)
There was no circuit diagram included with the coil, but referring to the information of Simple Wireless LED Circuit , this seems to be the typical method for supplying power wirelessly.
Preparing a mobile battery for this circuit;
Since the LED Transmitter (coil and Timer) set is designed for 5V, got 4.55V by choosing the set of used batteries connecting in series.
Input - Output sensitivity test¶
Coil-LED distance 0mm
Coil-LED distance 10mm
Coil-LED distance 20mm
Coil-LED distance 25mm ---a little bit darker than 20mm
Coil-LED distance 30mm ---darker than 25mm
Coil-LED distance 35mm ---slightly lighting
Design the system for my car seat by on-site fitting¶
On-site fitting the system
Coil position and height setting close to eye level
Coil system assembly
Battery settlement at back of head rest
Confirmation of LED lighting with the assembled system
Placing wireless LED on the cheekbone which is the wides part of face and close to eye
I changed batteries for the testing so that it supplies 5V.
Battery voltage measurement before the test
Confirmed 5.18(V)
Results¶
The system could indicates the side that driver is aiming before actual cornering, and the light is visible from other passengers.
I am also curious that the reflecting light can also be seen from the driver, so that driver can notice when and how much motion is his/her head moving.
This could give new sensation for the driver him/herself as a new driving experience.
System working from front view
System working from front side view
System working from side view
Video¶
Head tilting indication system