Connecting a Pi to generic 3.2" LCD panel
T_IRQ----11
T_DO/OUT-21
T_DN/DIN-19*
T_CS-----26
T_CLK----23^
SDO(MISO) N/C
LED------1 (3.3v) with 4.7k in series
SCK------23^
SDI------19*
D/C------15
RESET----13
CS-------24
GND------6 (gnd)
VCC------17 (3.3v)
Note 2 wires to PI pins 23 and 19
to use.. Use RaspiOS BULLSEYE.
git clone https://github.com/waveshare/LCD-show.git
cd LCD-show/
sudo ./LCD28-show
After installing if you change this line in config.txt....
hdmi_cvt 480 320 60 6 0 0 0 to hdmi_cvt 640 480 60 6 0 0 0
you should be able to connect a hdmi monitor at the same time
Calibrate touchscreen after connecting