2.9-inch electronic paper screen clock

The source of inspiration and schematic diagram for this project is @duck boss, source project address.

At the same time, the project is also compatible with @Glycyrrhizic acid is not sour boss's firmware, his open source link .

Update log:

2021.4.17

1. The ESD diode is replaced with SRV05-4;
2. PCB transplanted to 2.9 inches;
3. Optimize the schematic.

2021.3.27

1. Continue to optimize the schematic diagram to make it clearer and easier to understand and standardize.
2. Solved the problem that the esp8266 cannot start without forcing the TX pin of the esp8266 to be pulled up (if it still doesn't work, please solder a 10k resistor at the NC resistor )
3. Change the ch340c to a 3.3v level power supply to unify the power supply and level.
4. Solved the problem of low battery power displayed on the screen after startup without connecting the battery or turning on the power switch.
5. Continuously optimize wiring

• basic skills:

1. Time display, refreshed every minute (partial refresh, 0.3s)
2. The weather forecast shows that the update interval and update period can be modified in the code
3. Custom message function, you can display news directly or send custom messages through the server
4. Display date, lunar calendar and other information
5. Support Chinese display, font library is stored in flash

• Screens that the program can support:

1. Weifeng WFT029 black and white
2. Weixuehink2.9 inch black and white
3. Other models of screens are not supported

• Battery: (303080)

1. Shows weather only for at least half the year (updated hourly).
2. Display time 2-4 months (weather updated every two hours, not updated at night)

• Program burning:

Using the onboard USB to serial port, esp8266 burning tool

An open source version was released in the early years, and the tutorial was very detailed. Later, more and more people started playing with Ink Screen. This year, some businessmen began to look at it and wanted to make a profit from it. They made it and sold it without changing a single line of code. They used my server for free and threw the after-sales service into my group, so I released this new version. , both in terms of hardware and software, it surpasses the open source version and fixes a large number of bugs. In order to prevent abuse, only bin files are provided for enthusiasts to burn.

If you are interested, you can join the QQ group 556951885. There are entry barriers to the group. You must either provide photos of Lichuang's board or answer the questions correctly to join the group. I can't do either of these, so sorry. Support and firmware are provided free of charge for personal production. If you have any commercial or profit-making ideas, please leave.