Please help my LCD only display blocks (connected with I2C module) I'm pasting the I2CexpDiag of my LCD Display using hd44780 library. No⸮ ******************************************************************** Serial Initialized -------------------------------------------------------------------- I2…

The LCD only displays a line of blocks

xfpd May 28, 2022, 7:59pm 11

Do these boards have vias to ensure one-side soldering becomes multi-layer continuity?

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