I bought a nice 128x64 LCD display (GM12864-59N) bundled with ST7567S I2C controller. Then I tried connecting the display to ESP32 and running i2c detect code. ESP32 was able to detect the 0x3F device successfully. Out of luck with Raspberry Pi though. RPI's i2cdetect can't detect the controller. Tried swapping SDA and SCL pins to be sure that wiring is correct. Also tried connecting VCC to both 3.3V and 5V of the rpi, but still no result.
From this post:
https://www.stm32duino.com/viewtopic.php?t=2417
I found out that there may be something wrong with display's I2C timing or logic voltage levels. Tried removing the diodes described in the post but that still didn't yield any results.
What can I do to make the display work with Raspberry Pi? I thought about using an arduino to act as a relay between rpi and the display, but that is such a cumbersome solution. Maybe strapping some pull up resistors could help? Sorry, I am not good in electrical engineering yet, so I am lost...
From this post:
https://www.stm32duino.com/viewtopic.php?t=2417
I found out that there may be something wrong with display's I2C timing or logic voltage levels. Tried removing the diodes described in the post but that still didn't yield any results.
What can I do to make the display work with Raspberry Pi? I thought about using an arduino to act as a relay between rpi and the display, but that is such a cumbersome solution. Maybe strapping some pull up resistors could help? Sorry, I am not good in electrical engineering yet, so I am lost...
Statistics: Posted by KontraBob — Thu Jan 30, 2025 12:13 am — Replies 0 — Views 22