solution:
//LK204-7T-1U

//byte degree[8] = { 00001000, 00010100, 00001000, 00000011, 00000100, 00000100, 00000011, 00000000 };
byte degree[8] = { 8, 20, 8, 3, 4, 4, 3, 0 };//changed bytes to decimals
void setup()
{
ClearLCD();
Serial1.begin(19200);
}
void loop() {
ClearLCD();
CursorPos(1,1 ...

I can't seem to create and display a custom character on my LK204-7T-1U display. (weird signs appear)
here's my code for the degree " °c " example from the manual page 21.

//LK204-7T-1U

byte degree[8] = { 00001000, 00010100, 00001000, 00000011, 00000100, 00000100, 00000011, 00000000 };

void ...