Insufficient information overload caused by mobile phones can make people feel anxious. Some people choose to actively turn off the small red dot reminder in the circle of friends, or control the time by screen time; others simply choose physical therapy and use the means of disconnecting the network to get rid of the shackles of smart phones.

Recently, Justine Haupt, an astronomical instrument engineer from New York, USA, using a 3D printed case and microcontroller, and a dial dial on an old telephone set, made a “precautionary ring” Web phone. ”

The engineer also detailed his development history on the website. At first, Justin wanted to make a mobile phone using 2G network, but the first version of the battery only lasted for 2 hours, and the local 2G network was also gradually closed, so he switched to a new one later. 3G chip module, redesigned a version.

The phone we see in the picture is an Arduino-based development board
Device, its volume is very small, there is definitely no problem in carrying it out, there are a lot of alternatives in design.

The most prominent is the front mechanical dial. This is very reminiscent of the old-fashioned rotary phone. You need to put your finger in the small hole and turn the dial to the corresponding number again and again to make a successful call. Very retro.

However, Justin also added that she has installed several physical and physical buttons on her mobile phone, which correspond to the phone numbers of frequently used contacts such as parents and husbands, thereby reducing the number of repeated dials.

There is a physical antenna on the side of the fuselage, which can be easily carried when you put it away, or you can adjust the angle to get a better signal for the phone. As for the 10 LED lights, it is used to confirm the signal and remaining power.

Another interesting thing is the curved ink screen on the back of the phone. Justin said that this screen is her favorite part. In addition to being used to display the address book, you can also see the missed call history. The key is It is very power efficient.

For those who are accustomed to the efficiency of WeChat and Alipay and enjoy the convenience of technology, this home-made mobile phone obviously hasSome are anti-human, except that it is similar to the minimalist phone such as LightPhone that we reported before. Multifunctional, but want to let people get rid of the shackles of smart phones, so only retain basic features such as call text messages, nothing else.

Justin I also said in an interview with Wired , she has always been fond of the old-fashioned rotary dial phone, and she has always used the flip phone , Do not like to keep in touch with others by texting, but prefer to make phone calls, so using this type of mobile phone will not cause yourself much trouble.

On the other hand, Justin’s interaction logic also makes Justin feel uncomfortable, and physical buttons can give her real tactile feedback and satisfaction.

“There are still many valuable parts of physical switches and buttons. Even simple things, such as FM radios with knobs and dials, are gradually being replaced by digital buttons. No one seems to care. But I care. “

At present, Justin has uploaded the technical file of this phone on the website open source sharing , interested friends can try Make it yourself.

Title map source: justine-haupt