4.2-inch ink screen calendar

• basic skills:

1. Time display, refreshed every minute (partial refresh, 0.3s)
2. Weather forecast shows that the configuration mode can modify the update interval and update period through the mobile phone
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. Indoor temperature and humidity display
6. Power display
7. Supports unicode full characters and Chinese display, and the font library is stored in flash

• Screens that the program can support (screen type is switched by mobile phone, firmware is universal):
• Let’s do some popular science. Weixue and Jiaxian do not produce screens. Manufacturers that produce ink screens include Hink wf dke opm, etc. Generally, there is a mark on the wiring line.

1. 2.9-inch screen: WF29 hink29 WFTBZ03 DKE29
2. 4.2-inch screen: HINK42 OPM42 DKE42 WF42

• Battery:

1. Shows weather only for at least half the year, 1000maH (updated every hour).
2. Display time 2-4 months, 1000maH (weather updated every two hours, not updated at night)
3. 2.9-inch is recommended to install 1000mah battery 308030
4. 4.2-inch is recommended to install a battery of more than 2000mah

• Program burning:

Using the onboard USB to serial port, esp8266 burning tool

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 shell files, firmware, BOM tables, etc. in the group. There are barriers to entry to the group. You have to provide photos of Lichuang's board games or answer the questions correctly to join the group. If you can't do either of these, I'm sorry.

Support and firmware are provided free of charge for personal production. If you have any commercial or profit-making ideas, please leave.