Succeeded in creating a device that can remotely control smartphones and PCs with parts that were output with a 3D printer even though there is no battery

When I thought about using laundry detergent, there are almost no more leftovers, etc. The daily necessities disappear, and the situation that there is no stock is very troublesome.Amazon Dash ButtonThere are services and devices that can purchase the specified ones with one button, but in most cases you need a battery to use the device, recharge the battery when the battery runs out, It is troublesome to replace it when it runs out. Meanwhile, the Washington University research group has succeeded in creating devices that can connect to Wi-Fi by using only the parts output by 3D printers without connecting to electronic equipment.

Printed Wi-Fi

In first, 3-D printed objects connect to WiFi without electronics | UW News

Researchers at the University of Washington developed a system that can connect to Wi-Fi without electronic equipment by using plastic parts and sensors output by 3D printers. What you can actually create is a slider that can adjust the volume of the terminal from a remote location even though there is no battery, a button that you can shop on Amazon automatically like Amazon Dash Button, notify the user when a water leak is detected It is a sensor to send. This revolutionary system, on SIGGRAPH Asia 2017 on November 30, 2017Announcementit was done.

"Our goal was to make it possible to send useful information to other devices with a home 3D printer, but the question is how do we realize wireless communication using Wi-Fi only with plastic? In that respect, no one has ever realized, "said Vikram Iyer, a student at the University of Washington, School of Electrical Engineering and one of the co-authors of the research.

3D Printing Wireless Connected Objects - YouTube

The system developed by Iyer et al. Can communicate with a commercial Wi - Fi receiver,Back scatterBecause it applies technology, it can be called "back scatter system". In the backscatter system, the antenna (center) embedded in the 3D printed part reflects the radio signal emitted from the Wi - Fi router (left), thereby sending information to the specific terminal. The back scatter system converts the radio signal into a specific pattern and reflects it, so it converts it to another information that can be read by a Wi - Fi receiver (right) such as a smartphone or a computer. In addition, it seems that conductive printed filaments made by mixing plastic and copper are used for the antenna part of the system, but it seems that this can also be output by 3D printer at the same time.

The structure of the device is to arrange a conductive plastic switch at the tip of the gear and spring outputted by the 3D printer and the spring. When this switch touches, it makes a signal that can be decoded by a dedicated receiver by changing Wi - Fi radio waves. By doing this, you can send a command to another terminal like "Push the button and order pizza", for example. Besides, by judging how much the laundry detergent was used from the amount of rotation of the gear, you can make "a switch that Amazon will buy when the detergent runs out," and you can adjust the volume of the device You can also make a bar.

When certain conditions occur, the switch can be turned on and signals can be sent from the device to the digital terminal. For example, if it is applied to an anemometer, if it is designed so that the switch turns on when a wind speed above a certain speed is recorded, it is possible to say "send a notice when wind speed ◯◯ or more is recorded".

The moment the waveform at the bottom of the screen changes, it means that the device is converting the Wi - Fi signal with the back - scatter system.

It can also be applied to flowmeters and the like that detect if water flows more than a certain amount on the same principle.

Press the button ......

Screen lights up. However, since there is no battery etc in this switch, if you are flying even Wi - Fi you can continue to use without worrying about running out of batteries.

Besides, if you twist the rotary switch in your hand ... ...

The screen of the back PC scrolled.

It is also possible to create a slide bar type device and adjust the volume by remote control.

in Hardware,   Video, Posted by logu_ii