Tencent Digital (outside the cloud) can also make smart watches? It's incredible. A foreign fan named Max.K did it. He developed a smart watch called Chronio.
Chronio is a 3D printed watch that is based on Arduino. Arduino is a convenient, flexible and easy-to-use open source electronic prototyping platform that includes hardware (various models of Arduino boards) and software (Arduino IDE). It looks like Chronio doesn't really look like a smart watch. It's age. There is no WiFi, no BLE connection. In case of loss, Chronio has installed a 160 mAh button battery that can last for several months.
The display is also a bit shabby, with a 96x96 pixel Sharp Memory LCD screen that can be displayed all the time. If you can only show time, this watch also dare to nickname "smart"? Don't worry, you can play the simplified version of Flappy Bird on your watch. As for the complicated game, you can only say sorry.
Understandably, this is a DIY watch after all. Fan Max.K developed this watch with a printed circuit board, a screen, a strap, and it is similar to Pebble Time. The black watch above is Pebble Time, and it looks like a brother. The Chronio shell is printed using 3D technology. Currently Max.K is testing the watch's life time.
Let's take a look at the hardware and features:
Most of the time, the ATmega chip is in sleep mode, and the update time starts every minute. It will also start when the button is pressed. Because of this the current consumption is only 2uA. Unfortunately, the screen needs to receive a specific electronic pulse signal every second, so the watch will add a complicated circuit board, directly leading to the current consumption of the current watch has reached 20uA. Despite this, the watch can still last for six months.
The control interface is performed through the 3 buttons on the side of the watch. The buttons are 3D printed and can activate the switch of the circuit board.
Chronio is feature-rich and can display time, date, temperature, and battery voltage. No additional temperature sensor is required because the DS3231 can measure temperature.
The watch case is composed of four 3D printing components and is about 10.8 mm thick, which is thinner than the Apple Watch. Unfortunately, the watch screen has no protective layer. Chronio is compatible with any 22 mm strap.
After assembling the third edition of the watch, developer Max.K decided to start testing battery life. During testing, the display and real-time clock are on, and Atmega wakes up every minute. The calculated battery life is about 6 months. Please note that the figures are not accurate. A 1Hz generator is installed in the watch, which causes a change in current consumption, making it difficult to predict actual battery life.
The battery voltage is displayed next to the time and date. Tests have found that depending on the room temperature, the battery voltage is between 2.84 and 2.86 volts. Because lithium ion batteries discharge, the voltage is not constant. The voltage initially stays at 2.85 volts and then slowly falls.
Will you buy such a watch? If you are pretty, maybe you really have a market!
Source: geeky-gadgets
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