SYD8810 ink screen clock

2022.10.11
updates the most basic test firmware and synchronization time APP (temporarily only available for Android phones).
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A board that is a combination of an 8-bit Bluetooth board and a salted fish 2.13 price tag [verified], using the domestic SYD8810 MCU to drive the ink screen, change the Bluetooth connection time, etc.
The charging circuit in the picture above is not soldered.
More features are being designed, so stay tuned.
 
Instructions:
1. The Bluetooth version needs to remove the SYD8810 chip, 32M crystal oscillator, and 10uH inductor;
2. The entire original ink screen driver needs to be removed from the price tag;
3. SYD8810 is a QFN32 package, which is difficult to solder, so novices should try it with caution;
4. Soldering After completion, please check whether there is a short circuit. Please be responsible for any problems caused by self-soldering;
5. SDK download link https://gitee.com/SydtekInc/SYD8811SDK
6. The attachment temporarily provides ink screen lighting firmware and supporting 4k File;
7. The layout is messy and will be rearranged after the firmware development is completed.
 
2022.09.22
Added IIC functional test firmware.
After flashing the firmware, please observe whether the two red boxes in the picture above are displayed normally.
The upper red box is the RX8025T test, and the lower red box is the SHT30 test.
If the display is abnormal, please check the welding condition.
 
20230213
Updates Tofu case battery version, lithium battery version PCB and corresponding firmware.
The firmware is modified based on the @Sakarting open source firmware, and I have received a lot of help. I would like to express my sincere thanks to him!
 
The average power consumption of the battery version is 42uAh, and the average power consumption of the lithium battery version is 45uAh (the power consumption in the power outage state is 10uAh).
It is recommended to make a lithium battery version. The instantaneous current of the 2.13 screen is too large, and the battery version may not be able to operate normally with ordinary batteries (it is recommended to use Chuanying CR2450).
 
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2023.02.19
Important update: 1. The battery version is optimized to greatly reduce the peak current;
                  2. The lithium battery version fixes the solar term display error.
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on 2023.02.25
to optimize power consumption and change to full refresh every 3 hours. The average power consumption of the current battery version is 33uA/h.
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2023.03.28
further optimizes power consumption (changed to 3H full refresh).
Battery version: Ble_EPD_v1.3_3H.bin
Lithium version: Ble_EPD_Li_v1.3_3H.bin