
Board supply for the Raspberry Pi I2C 16x2 RGB LCD KeyPad HAT. DFRobot tech specs state supply voltage 5V.
Raspberry Pi IIC/I2C communication interface for the RGB LCD1602 and backlight control. DFRobot states the board uses an IIC interface.
Select push-button input. DFRobot pinout table maps BCM GPIO 16 to Button Select; jumper must be installed for key use.
Up push-button input. DFRobot pinout table maps BCM GPIO 17 to Button Up; jumper must be installed for key use.
SPI · I2C · 3.3 V · 3.3 – 5 V · Breakout
Adafruit describes product 398 as a 16x2 RGB backlight LCD using digital pins for LCD control and PWM pins for the backlight; the product…
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.
16×2 and 20×4 character LCDs (parallel, I2C backpack, Qwiic, Grove), SPI TFTs from 0.71 to 3.5 inches, and large DSI and HDMI capacitive-touch panels up to 13.3 inches.
1.02" E-Ink Display Module - 128x80, Black/White, SPI visual preview
1.02" E-Ink Raw Display Panel - 128x80, Black/White, SPI visual preview
1.54inch e-Paper Module (B), 200×200, 3-Color, SPI visual preview
1.54inch e-Paper Module, 200×200, SPI visual previewWaveshare makes up the large majority of parts here and often sells the same panel twice: once as a raw display needing a separate driver board, and once as a module or HAT+ with the SPI controller attached.
Displays · E-paper displays · 102 parts
"Shake" 8x8 LED Matrix visual preview
10-Segment LED Bar Graph - Red visual preview
11x1 VFD Display Module visual preview
11x7 LED Matrix Breakout visual previewAdafruit HT16K33 backpacks, MAX7219 daisy-chains, NeoPixel and DotStar grids, HUB75 RGB matrix panels, charlieplexed arrays, bare clock displays, and two VFD character modules — almost 90 parts, none wired the same way.
Displays · LED displays · 88 parts
0.49inch OLED Display Module, 64×32, I2C visual preview
0.91" OLED Display Module - 128x32, I2C visual preview
0.96" OLED (B) - SPI/I2C visual preview
0.96" RGB OLED Display Module - 64x128, SPI, 65K Colors visual previewAbout 30 parts: monochrome I2C modules from 0.49 to 1.3 inches, SPI/I2C grayscale and 65K-color RGB panels up to 1.5 inches, a transparent OLED, and ecosystem-specific units for Raspberry Pi, FireBeetle and M5Stack Grove.
Displays · OLED displays · 29 parts
1.75mm PLA (1kg) - Black visual preview
1.75mm PLA (1kg) - Gold visual preview
1.75mm PLA (1kg) - Green visual preview
1.75mm PLA (1kg) - Natural visual previewDFRobot 1.75 mm PLA in 1 kg spools makes up the bulk of the group, in over 15 colors. Specialty options include PVA in both diameters, NinjaFlex flexible filament, Proto-Pasta conductive PLA, and wood-fill. OverLord printer spares and OverLord printers round out the hardware side.
Tools & prototyping · 3D printing · 53 parts
Down push-button input. DFRobot pinout table maps BCM GPIO 18 to Button Down; jumper must be installed for key use.
Left push-button input. DFRobot pinout table maps BCM GPIO 19 to Button Left; jumper must be installed for key use.
Right push-button input. DFRobot pinout table maps BCM GPIO 20 to Button Right; jumper must be installed for key use.
| 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 |
I2C 20x4 Arduino LCD Display Module
20x4 I2C character LCD. Use when the project needs four lines; not a drop-in for a 16x2 enclosure or layout.