5V supply
Board supply for the Raspberry Pi I2C 16x2 RGB LCD KeyPad HAT. DFRobot tech specs state supply voltage 5V.
Type · powerVoltage · 5V
IIC interface
Raspberry Pi IIC/I2C communication interface for the RGB LCD1602 and backlight control. DFRobot states the board uses an IIC interface.
Type · signalVoltage · 3.3V logic
GPIO16 / SelectBCM GPIO16
Select push-button input. DFRobot pinout table maps BCM GPIO 16 to Button Select; jumper must be installed for key use.
Type · signalVoltage · 3.3V logic
GPIO17 / UpBCM GPIO17
Up push-button input. DFRobot pinout table maps BCM GPIO 17 to Button Up; jumper must be installed for key use.
Type · signalVoltage · 3.3V logic
GPIO18 / Down

Start wiring

5V · 3.3V logic

Confirm the data interface matches your host board.

Module pins: 5V supply, IIC interface, GPIO16 / Select, GPIO17 / Up, GPIO18 / Down, GPIO19 / Left, GPIO20 / Right. Schematik maps them to your board in the app.

Related groups

4 groups

Displays

Character LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.

Displays · TFT & LCD displays · 35 parts

Connectors

Sort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.

Connectors & cables · Connectors · 28 parts

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 31 parts

MCUs and boards

ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.

Boards · Microcontroller boards · 29 parts

Pin	Position	Type	Function	Voltage
5V supply		power	Board supply for the Raspberry Pi I2C 16x2 RGB LCD KeyPad HAT. DFRobot tech specs state supply voltage 5V.	5V
IIC interface		signal	Raspberry Pi IIC/I2C communication interface for the RGB LCD1602 and backlight control. DFRobot states the board uses an IIC interface.	3.3V logic
GPIO16 / Select	BCM GPIO16	signal	Select push-button input. DFRobot pinout table maps BCM GPIO 16 to Button Select; jumper must be installed for key use.	3.3V logic
GPIO17 / Up	BCM GPIO17	signal	Up push-button input. DFRobot pinout table maps BCM GPIO 17 to Button Up; jumper must be installed for key use.	3.3V logic
GPIO18 / Down	BCM GPIO18	signal	Down push-button input. DFRobot pinout table maps BCM GPIO 18 to Button Down; jumper must be installed for key use.	3.3V logic
GPIO19 / Left	BCM GPIO19	signal	Left push-button input. DFRobot pinout table maps BCM GPIO 19 to Button Left; jumper must be installed for key use.	3.3V logic
GPIO20 / Right	BCM GPIO20	signal	Right push-button input. DFRobot pinout table maps BCM GPIO 20 to Button Right; jumper must be installed for key use.	3.3V logic

Pinout

Start wiring

Displays

Connectors

Air quality

MCUs and boards