【ART-Pi】ART-Pi serial port ink screen expansion board +570333W

This project is based on the ART-Pi ink screen driver board

After measuring the size, I realized that ART-Pi is quite compact :)

The 4.2 screen is a bit small, but the 2.9 screen should be fine. After measuring, I drew the display area of ​​the 2.9 ink screen.

In fact, there is still a little border space at the top and bottom, and it should be fine to put a 3.27 screen. However, I don’t have a 3.27 ink screen. Friends with this size can test it by themselves:)

Although the display of the ink screen is good, it is afraid of bumps, so plug-in components cannot be used where the top layer of the project comes into contact with the ink screen .

SMD headers must also be used where the ART-Pi is stuck!

Because the top layer is occupied by a large area of ​​​​the ink screen, many components can only be thrown on the bottom layer. Fortunately, it's not ugly either. The ART-Pi looks beautiful from the 3D preview!

There are two switches at the bottom , one can be used to switch the type of ink screen , and the other can switch between three-wire and four-wire systems .

Regarding this project, it mainly drives the serial port ink screen. In addition, the RX8025T-UB with its own temperature compensation is added as a clock chip . As for the temperature and humidity chip, the SHT30-DIS with a relatively compact package is also used , using two half circles to adjust the temperature. Go into isolation .

Combined with the ink screen, temperature and humidity meter, and clock chip, you can complete a weather forecast station with a clock.

The hardware is completed, but the software is a big problem, hahaha!

The STM32F103 driver has little problem with the ink screen, but the H750 driver is also the worst. Hope this solves the problem perfectly :)