2.8″ Touchscreen Expansion for Raspberry Pi CM4 (with Interface Expander)

WaveshareSKU: WAV-21435
Sale price £75.60
incl. VAT
excl. VAT
Only 20 units left

Awesome Extras

Raspberry PiRaspberry Pi Compute Module 4
Sale priceFrom £29.50 incl. VAT excl. VAT
SanDiskSanDisk MicroSD Card (Class 10 A1)
Sale priceFrom £6 incl. VAT excl. VAT
The Pi HutMicro HDMI to HDMI Cable for Raspberry Pi 5/4
Sale priceFrom £3.80 incl. VAT excl. VAT
WaveshareNano Base Board (A) for Raspberry Pi CM4
Sale price £16.20 incl. VAT excl. VAT
WaveshareNano Base Board (B) for Raspberry Pi CM4
Sale price £19.40 incl. VAT excl. VAT

This is a specially designed 2.8" touchscreen expansion and interface board for the Raspberry Pi Compute Module 4.

The main display board offers a compact 2.8" display with 480x640 resolution and 5-point capacitive touch combined with toughened glass. Your CM4 (sold separately) clicks into the display board and breaks out various connectivity options including a MicroSD slot, USB 2.0 port, camera connector, GPIO expansion header, USB-C power/programming port (4A recommended!) and micro-HDMI port. You will also find a status indicator LED and boot switch for your convenience.

The additional interface expander board (included) connects to the main display board via the GPIO expansion header and offers three additional USB 2.0 ports, a Gigabit Ethernet port, M.2 slot for comms modules/storage and an M.2 status LED!

Usage and setup guidance can be found via the Waveshare Wiki.

Important Notes

  • The display uses the DPI interface instead of the HDMI interface
  • Please use a 5V/4A or higher power adapter
  • Compute Module 4 not included

Display Board Features

Label Name Description
1 CM4 Connector Applies to all versions of CM4
2 CAM Interface 22PIN MIPI CSI Camera Interface
3 Power supply/burning interface 5V/4A power supply/programming interface
4 USB 2.0 interface USB 2.0 interface
5 HDMI1 port Micro HDMI port, support 4K 30fps output
6 BOOT ON: CM4 USB Type C boot boot
OFF: eMMC or SD card boot boot
7 Interface Expansion Gigabit Ethernet, PCIE, USB and other

Expander Board Features

Label Name Description
1 USB 2.0 interface 3-channel USB 2.0 interface, support various USB device
2 M.2 M KEY interface Suitable for NVIE SSD/comm module supporting PCIE M.2
3 Gigabit Ethernet port RJ45 Gigabit Ethernet port, support 10/100/1000M network
4 M.2 LED M.2 indicates the working status of the interface
5 Interface Access Extended Interface Access

Package Contents

  • 1x Touchscreen expansion board
  • 1x Interface expander
  • 1x Screws pack


Payment & Accreditations

Payment methods
Visa Mastercard Maestro PayPal Amazon Klarna

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.