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2x16 Character LCD is most popular display component for small controller like Arduino, but most of these LCD uses parallel interface. In most of the case, you will need 10 pins to control it or to display message on it. 8-pin are for the data, Enable and

Need more I/O's on your microcontroller? You need an MCP23017 port expander chip!

The 1.3-inch OLED display is a high-contrast, compact screen ideal for adding user interfaces, data readouts, or graphical feedback to your microcontroller projects.

This 5-Port Passive Hub board has 5 vertical JST SH 1mm connectors in a row, all with the power, ground and SDA/SCL pins connected. There are also breadboard breakout pins if you need them. Use this hub to add as many I2C devices to the bus as you need.

This 4-wire cable is a little over 150mm long and fitted with JST-SH (Qwiic/STEMMA QT) female 4-pin connector on one end, and male jumper wires on the other.

This 4-wire cable is a little over 150mm long and fitted with JST-SH (Qwiic/STEMMA QT) female 4-pin connector on one end, and female jumper wires on the other.

This 4-wire cable is a little over 300mm long and fitted with JST-SH female 4-pin connectors on both ends. Compared with the chunkier JST-PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove.

These are handy for extending a Stemma QT or Qwiic cable if you don't have one long enough for your project, or to protect a port if you're regularly swapping out sensors/dev boards. The pin connections are 1-1, matching both sides.

This 4-wire cable is a little over 200mm long and fitted with JST-SH female 4-pin connectors on both ends. Compared with the chunkier JST-PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove.

The Adafruit VL53L4CX Time of Flight Sensor is another great Time of Flight distance sensor from ST in the VL5 series of chips, this one is great for long distances - it goes up to 6 meters compared with 4 meter max of the VL53L1X.

Rotary encoders are soooo much fun! Twist em this way, then twist them that way. Unlike potentiometers, they go all the way around and often have little detents for tactile feedback.

This OLED goes out to all the fans who want more pixels in a smaller size! Normally our 128x64 OLEDs are the biggest ones we've stocked that can use I2C. This one is a whopping 128x128 pixels in crisp monochrome.

Vishay has a lot of light sensors out there, and this is a nice simple lux sensor that's easy to add to any microcontroller. Most light sensors just give you a number for brighter/darker ambient lighting.

The Adafruit LIS3DH Accelerometer Breakout packs low-power consumption, flexible I2C/SPI connectivity, and advanced motion detection into a compact, STEMMA QT-ready board—perfect for wearables, motion sensing, and battery-powered projects.

Sensirion Temperature/Humidity sensors are some of the finest & highest-accuracy devices you can get. The SHT41 sensor is the fourth generation of I2C temperature and humidity sensor from Sensirion.

This Qwiic/STEMMA GPIO connector from Ozzmaker allows you to easily connect Qwiic or STEMMA enabled modules to a Raspberry Pi, without the need for soldering.

The SparkFun Qwiic SHIM for Raspberry Pi is a small, easily removable breakout that easily adds a Qwiic connector to your Raspberry Pi. The SHIM design allows you to plug directly into the Pi's I2C bus with no soldering required and the thin PCB design allows for it to be sandwiched on your Pi GPIO with other HATs!