Raspberry Pi DSI screen

2022-8-18 Update:

It's numb. I moved the btb seat and it's still a little skewed. It's swinging open.

The i2c chip and complex backlight control circuit were removed, and a resistor was added to set the backlight to always be on.

The annoying reset bug still exists and I don’t know how to solve it. . . But it doesn’t seem to affect normal use, so I’ll leave it alone for now.

The 5-inch test board has been built and is ready for testing.

Updated on 2022-4-24:

Since the EEPROM seems not to be recognized, I deleted the reserved EEPROM.

Because the cables were not neatly connected, the BTB moved up a little bit. It should be fine. I’ll verify it by making a board next month.

The 5-inch WUXGA adapter board has also been drawn. I will wait for a while for proofing and testing.

I'm too lazy to type, so check out my GitHub for details:

Github link

In terms of layout, since I am not a student in this area, the layout may be a bit ugly. Please forgive me. If anyone finds something unreasonable, you can also give me advice.

Regarding the system, it can be used on both 32-bit and 64-bit systems, but the version must be debian 11 (bullseye) or above (the following versions do not have KMS drivers, so they cannot be used).

Currently, I have only tested Raspberry Pi 4b. If anyone has a 3b/3b+, you can help test it.

2.8-inch screen purchase link:

[Taobao] https://m.tb.cn/h.fAxbUjn?tk=VH5x2GjZVHU CZ0001 "HD 2.8-inch MIPI Mipi 480x640TFTLCD LCD bare screen IPS Raspberry Pi ST7701S"
Click the link to open it directly