
Basic roller-lever microswitch for arcade controls, limit sensing, and small robots. Adafruit lists three terminals: common, normally open, and normally closed, with a suggested maximum of 30 VDC and 250 mA.
Analog · Single data line · Bare
SparkFun describes COM-09190 as a breadboard-friendly 12 mm square momentary pushbutton with a large button head and tactile click.
Separate simple momentary pushbuttons from rotary-control breakouts and potentiometer wiper parts before treating them as swappable user inputs.
SparkFun Rotary Switch Potentiometer Breakout visual previewSparkFun Rotary Switch Potentiometer Breakout
Rotary-control accessory board for building a 10-step potentiometer around a separate rotary switch. Not a pushbutton substitute.
Momentary Pushbutton Switch - 12mm Square visual previewMomentary Pushbutton Switch - 12mm Square
Straightforward 12 mm momentary pushbutton for PCB or breadboard-style user input. Good fit when the design needs a simple press-to-close control.
Potentiometer Wiper/Plunger - 14mm visual previewPotentiometer Wiper/Plunger - 14mm
Mechanical wiper/plunger accessory for SoftPot, ThinPot and HotPot sensors. Not an electrical button or switch.
Momentary Pushbutton Switch visual previewMomentary Pushbutton Switch
Illuminated momentary pushbutton. Functionally button-like, but the LED circuit, voltage rating and mounting details must be matched.
Adafruit ANO Rotary Navigation Encoder Breakout visual previewAdafruit ANO Rotary Navigation Encoder Breakout
Adafruit NeoPot Clear Shaft Potentiometer with RGB NeoPixel
Gravity: Digital Push Button (White) visual previewGravity: Digital Push Button (White)
LED Illuminated Push Button - 44mm Square visual previewLED Illuminated Push Button - 44mm Square
Tactile Switch Buttons (12mm square, 6mm tall) x 10 pack
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 previewCharacter 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 · 33 parts
MQ-2 Gas Sensor visual preview
MQ-3 Gas Sensor visual preview
MQ-135 Gas Sensor visual preview
Grove - Air quality sensor visual previewChoose 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 · 29 parts
Arduino Uno visual preview
Raspberry Pi Pico visual preview
Adafruit Feather nRF52840 Express visual preview
Pan-Tilt HAT kit visual previewESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.
Boards · Microcontroller boards · 24 parts
Full-Bridge Motor Driver Dual - L298N visual preview
Pololu A4988 Stepper Motor Driver Carrier, Black Edition visual preview
Raspberry Pi Motor & Servo Addons/HATs | Kiwi Electronics visual preview
Adafruit DRV8833 DC/Stepper Motor Driver Breakout Board visual previewChoose by actuator type first: brushed DC motor, stepper motor, RC servo, solenoid or Raspberry Pi HAT. Similar-looking motor boards are rarely drop-in substitutes.
Motors & actuators · Motors & servos · 29 parts