@mjs513,

The tiny PCB is home made a AD7991 I2C 12 bits works also very nice with the T4.

@Kurt,

I included the new library's, it compiles without errors and runs smoothly.

View attachment RA8875-0.79b11p10.zip
Horiz/Vert Lines 52594

Rectangles (outline) 265228

Rectangles (filled) 265744

Circles (filled) 146734

Circles (outline) 142973

Triangles (outline) 18195

Triangles (filled) 57626

Rounded rects (outline) 106239

Rounded rects (filled) 902372

--------------------------------

screen:800x480 - rotation:0

Benchmark Time (microseconds)

Screen fill 16493

Test Pixel 29

Test Pixels 19419

Text 3543

Lines 85975

Horiz/Vert Lines 52590

Rectangles (outline) 265374

Rectangles (filled) 265748

Circles (filled) 146735

Circles (outline) 142968

Triangles (outline) 21212

Triangles (filled) 60805

Rounded rects (outline) 106215

Rounded rects (filled) 902479

--------------------------------

screen:480x800 - rotation:1

Benchmark Time (microseconds)

Screen fill 16494

Test Pixel 29

Test Pixels 11659

Text 3544

Lines 85970

Horiz/Vert Lines 52595

Rectangles (outline) 265811

Rectangles (filled) 265677

Circles (filled) 146734

Circles (outline) 142972

Triangles (outline) 18195

Triangles (filled) 57858

Rounded rects (outline) 106183

Rounded rects (filled) 902410

Best,

Johan