ESP32-2432S028 (Cheap Yellow Display)

Board ID	cyd
Display	2.8”, 320×240, landscape
Touch	Resistive
Chip	ESP32 (4 MB flash)
Board size	86 × 50 mm, 10–13 mm thick with connectors
Power	5 V over USB, about 150 mA with the backlight on
Status	Tested on a pedal

The “Cheap Yellow Display” (named after its yellow circuit board) is inexpensive and widely sold. It was the first board NanoGig Screen ran on and is the reference for the layout.

Which version to buy

Look for ESP32-2432S028R: the “R” is the resistive touch version. NanoGig Screen is tested on the version with two USB sockets (micro-USB and USB-C). Versions with a single micro-USB socket use a different display controller.

Power and cable

Power it from a USB-A to USB-C cable (or through a USB-A hub). A USB-C to USB-C cable, or a USB-C charger, gives the board no power: its USB-C socket lacks the parts a USB-C charger needs to see.

Which way up

With the picture upright, the USB sockets are on the right. If your screen shows the picture upside down, use Settings → NanoGig tab → page 2 → Rotate display.

Status light

The small LED on the board shows the Bluetooth state: red while it looks for the pedal, blue while connecting, off once connected.

Touch

The touch layer is resistive: it reacts to pressure, not to a light brush. Press with a fingertip or a fingernail.

Mounting

The board is 86 mm long, which doesn’t fit between the Nano Cortex’s footswitches. It sits best behind the switches or on a bracket at the pedal’s rear edge, angled towards you. Power it from the same USB supply as the pedal with a Y cable or a small hub.