Arduino Uno - R3
Arduino · DEV-11021
DEV-11021Arduino Uno R3 board sold by SparkFun, with ATmega328P, USB, barrel jack, and standard shield layout.
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ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.
Boards · Microcontroller boards · 9 parts
RGB backlight positive LCD 16x2 visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
I2C 20x4 Arduino LCD Display Module visual preview
Gravity: I2C 16x2 Arduino LCD with RGB Backlight Display V2.0 visual previewDisplays
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 · 25 parts
MQ-2 Gas Sensor visual preview
MQ-3 Gas Sensor visual preview
MQ-135 Gas Sensor visual preview
Grove - Air quality sensor visual previewAir 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 · 28 parts
Adafruit 4-channel I2C-safe Bi-directional Logic Level Converter visual preview
8-channel Bi-directional Logic Level Converter visual preview
74LVC245 - Breadboard Friendly 8-bit Logic Level Shifter visual preview
74AHCT125 - Quad Level-Shifter (3V to 5V) visual previewLevel shifters
Pick level shifters by bus behavior: I2C/open-drain, auto-direction push-pull, direction-controlled buffers, or 3 V to 5 V logic. They are not universal adapters.
Components · Logic Level Converters · 21 parts