One of the core technologies of the sensor that has not been disclosed until now is the characteristics of the phototransistor.

The output of the AD converter is compared as a curve when the hand is moved closer or farther away under the same conditions. The LTR-209 sensor used has good sensitivity when the object is far away. On the other hand, when the object is close, the sensitivity is poor and once it is saturated, the distance cannot be detected. What is important is the performance at long distances, and this characteristic directly determines the sensor's performance. It is thanks to this phototransistor that it can detect a distance of 8 inches.

Draw letters with cube type

This is an experiment to detect characters in a cube shape.
I want to make it possible for anyone to use advanced machines with intuitive machine operation.

motion detection

Video that detects hand movement direction, speed, and position
It is characterized by speed exceeding AI camera

dynamic exhibition

It would be interesting to be able to display models and pictures that move without contact.
It is expected to be realized by 2030.

sensing basket

A basket that lights up to let you know when something is inside. Effective for preventing forgotten items, etc., and can be used in shops, etc.

Rock paper scissors detection

If this is used as a cipher, it will be difficult to decipher.

N/8 switch

It is a non-contact switch that can input numerical values without erroneous detection.

False detection prevention contactless switch

It is a type that operates with two fingers that I was thinking about first.

Chance

This dynamic art I made in 2019 is what inspired me to come up with the sensor idea.

The LEDs are likened to small creatures, and when a pencil is brought close to them, they gather. Scatters when moved.

New Interface

This is an early work I took in 2019.
The mode selection method, which selects from 6 glowing dots, is inspired by the Japanese animation Kemurikusa. It is interesting that the cube type can create new interfaces such as selection methods as well as control.

Improved sensor cover

In the first prototype, such as the paper airplane video above, aluminum foil was wrapped. Now I cut the PVC cap and use it. One of the reasons why photo reflectors have not evolved is that it takes time and effort to cover the sensor, but this has now been resolved.

The second from the left is a prototype with two infrared LEDs. I stopped using this because it didn't work.

Non-contact switch

I have several ideas for non-contact switches, but I think the following insertion type is the easiest and does not cause false positives.

Intrusion detection

You can also do this by arranging sensors under the floor.

Antenna device

The last is the antenna device that I am going to experiment from now on. The sensing content is transmitted to the fingertips with a vibration motor. It is convenient because it can detect a wider range faster than a cane. I also hope that this sensor will be useful for visually impaired people.