After latest Migration LCD no longer works
Posted: Thu Aug 08, 2024 12:08 am
After updating/installing:
Arduino ESP32 Boards to v2.0.13 and
esp32 by Espressif Systems v3.0.4
I cannot get a simple 16x2 LCD to work as it once did.
The sketch is one I have used several times in the past.
Board used: ESP32-WROOM-32
I2C connections are: SDA->GPIO#21, SCL->GPIO#22
When power and GND leads are connected to the board it appears to be normally powered up.
However, when I connect #21 all is fine, but when I connect #22 the LCD goes dark.
Reversing the #21 and #22 sequence produces the same result.
If all leads are connected then power is provided to the USB cable the LCD flashes then goes dark.
I have tried other ESP32 boards of the same variety with the same exact result.
Any help will be greatly appreciated.
Thank you.
Arduino ESP32 Boards to v2.0.13 and
esp32 by Espressif Systems v3.0.4
I cannot get a simple 16x2 LCD to work as it once did.
The sketch is one I have used several times in the past.
Board used: ESP32-WROOM-32
I2C connections are: SDA->GPIO#21, SCL->GPIO#22
When power and GND leads are connected to the board it appears to be normally powered up.
However, when I connect #21 all is fine, but when I connect #22 the LCD goes dark.
Reversing the #21 and #22 sequence produces the same result.
If all leads are connected then power is provided to the USB cable the LCD flashes then goes dark.
I have tried other ESP32 boards of the same variety with the same exact result.
Any help will be greatly appreciated.
Thank you.