
Best selling Electronics modules from Adafruit
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1. Adafruit Si5351A Clock Generator Breakout Board - 8KHz bis 160MHz
No more searching for another crystal, thanks to Adafruit's Si5351A Clock Generator Breakout! This chip features a precise 25 MHz crystal oscillator and internal PLLs and dividers to generate nearly any frequency from under 8 kHz to over 150 MHz.
The Si5351A Clock Generator is an I2C-controlled clock generator. It uses the internal precise clock to drive multiple PLLs and clock dividers via I2C commands. By configuring the PLLs and dividers, you can produce accurate and arbitrary frequencies. There are three independent outputs available, and each can have a different frequency. The outputs have an amplitude of 3 Vpp and can be output either through a removable header for breadboards or, for RF applications, through an optional SMA connector.
We have soldered this handy little chip onto its own breakout board, equipped with a 3.3V LDO regulator, allowing it to be powered with 3-5V DC. Additionally, we have added level shifting circuits on the I2C lines so you can safely use this chip with 3V or 5V logic.
The best part is that we even have a great tutorial and library to help you get started! Our code is designed for use with the Arduino microcontroller and IDE but can easily be ported to your preferred I2C-supported platform.

2. Adafruit MCP9808 Hochpräziser I2C Temperatursensor Breakout
The MCP9808 High-Precision I2C Temperature Sensor Breakout from Adafruit is a highly advanced electronics module designed for accurate temperature measurements. With a typical accuracy of ±0.25°C over a temperature range of -40°C to +125°C, this digital temperature sensor delivers outstanding performance. The high resolution of 0.0625°C allows for detailed measurements that are useful for various applications in electronics and automation. The sensor is compatible with any microcontroller that uses the standard I2C bus, enabling the connection of up to eight sensors on a single I2C bus without address conflicts. The breakout board is user-friendly and features mounting holes as well as pull-down resistors for the address pins, making integration into projects easier. A comprehensive guide and library support quick setup with Arduino or CircuitPython.
- ±0.25°C typical accuracy over -40°C to +125°C
- 0.0625°C resolution for precise measurements
- Compatible with any microcontroller that supports I2C
- Up to 8 sensors can be connected to one I2C bus
- Operating current of only 200 μA (typical).

3. Adafruit 16-Kanal PWM / Servo Bonnet für Raspberry Pi

4. Adafruit PiUART - USB Konsole und Power Add-on für Raspberry Pi
Here is another super practical add-on for your Raspberry Pi computer, perfect for headless setups! The PiUART adds a micro USB to serial connection, allowing you to use any software with a serial port to connect to the Pi's console. The PiUART can be quickly and easily plugged in when you want to connect to your Pi. Two LEDs are connected to RX and TX on the serial converter chip, so they blink when data is sent or received.
Since we had some extra space, the PiUART also comes with a power switch featuring a 4-amp transistor. You can power your Pi through the micro USB port and then use the switch to turn off the power without having to unplug the cable. Low-power Pis like the Pi Zero and Pi A+ can be powered and controlled through a single cable connected to your computer. More powerful Pis like the Pi 2 and Pi 3 may draw too much power from a computer USB port, so check if your motherboard has a high-current USB port before trying it.
It comes fully assembled and ready to use; just connect your Pi and install the driver under Mac OS X - you'll be up and running in 2 minutes.
Works with any Raspberry Pi computer (Pi 1, 2, 3, Zero, etc.).

Adafruit PiUART - USB Konsole und Power Add-on für Raspberry Pi
5. Adafruit MCP9601 (MCP96L01) I2C Thermoelement-Verstärker
The Adafruit MCP9601 (MCP96L01) I2C thermocouple amplifier is a highly advanced electronics module specifically designed for precise temperature measurement with thermocouples. This module supports a variety of thermocouple types, including K, J, T, N, S, E, B, and R, and allows for easy integration into microcontrollers or single-board computers via the I2C interface. The integrated chip handles all analog tasks and provides a cold junction compensation reference to ensure accurate readings. With the ability to set over and under temperature alarms, this module is ideal for applications requiring precise temperature monitoring. The breakout board comes fully assembled and tested, featuring a 3.3V regulator and a level-shifting circuit that allows flexible use with 3.3V or 5V logic. The included 2-pin terminal block enables easy connection to the thermocouple, while the pin header allows for simple integration into breadboards or perfboards.
- Supports thermocouples of types K, J, T, N, S, E, B, and R
- Temperature range from -200°C to +1800°C depending on type
- Resolution of ±0.0625 °C for precise measurements
- Includes 3.3V regulator and level-shifting circuit.

6. Adafruit MCP4728 Quad DAC mit EEPROM, Stemma QT
The MCP4728 Quad DAC from Adafruit is a versatile electronics module that combines four 12-bit digital-to-analog converters (DACs) in a compact package. This module allows for precise voltage settings and offers the ability to store these settings in an internal EEPROM. As a result, the configured values can be automatically loaded when the device is powered on, ensuring user-friendly operation. The MCP4728 communicates via I2C, making it easy to integrate into various microcontroller projects. Additionally, the module provides the flexibility to choose between two reference voltage sources: the input voltage or an internal 2.048V reference. These features make the MCP4728 an ideal choice for applications requiring precise voltage control.
- Four 12-bit DACs in a compact package
- Internal EEPROM for storing DAC settings
- Choice between input voltage and internal 2.048V reference voltage
- Supports I2C communication for easy integration.

7. Adafruit ADXL343 - Drei-Achsen Beschleunigungsmesser (+-2g/4g/8g/16g), I2C/SPI
The ADXL343 from Adafruit is a highly advanced three-axis accelerometer that is ideal for a variety of applications. With a sensitivity range of ±2g, ±4g, ±8g, and ±16g, this sensor offers high flexibility and precision. It is equipped with a digital I2C and SPI interface, making integration into various systems easy. The ADXL343 features an internal 10- or 13-bit ADC that ensures high resolution. Integrated functions include motion detection, allowing for the recognition of tap, double-tap, activity, inactivity, and free fall. With two independent interrupt pins, users can easily monitor specific events. The sensor is an excellent choice for projects that require precise motion data and is known for its reliability and quality.
- High sensitivity from ±2g to ±16g
- Digital I2C and SPI interfaces for easy integration
- Integrated motion detection for versatile applications
- High resolution through 10- or 13-bit ADC.

Adafruit ADXL343 - Drei-Achsen Beschleunigungsmesser (+-2g/4g/8g/16g), I2C/SPI
Sensor
8. Adafruit PN532 NFC/RFID Controller Breakout Board
The PN532 is the most popular NFC chip and is embedded in pretty much every phone or device that supports NFC. It can do almost anything: read and write tags and cards, communicate with phones (e.g., for payment processing), and behave like an NFC tag. If you want to do any kind of embedded NFC work, this is the chip you want to use.
NFC (Near Field Communications) is a way for two devices that are very close to each other to communicate. It is a type of Bluetooth with a very short range that does not require authentication. It is an extension of RFID, meaning that everything you can do with RFID, you can also do with NFC. You can also do more with NFC, such as bidirectional communication with mobile phones.
Since it can read and write tags, you can also use it for RFID tag projects. We offer a few different tags that work well with this chip. It can also work with any other NFC/RFID tag from type 1 to 4.
The PN532 is also very flexible. You can use 3.3V TTL UART with any baud rate, I2C, or SPI to communicate with it. This chip is also supported by libnfc. Just plug in an FTDI cable and use the FTDI serial port device for communication – this way, you can run NFC-Dev with any Linux/Mac/Windows computer! We also have an onboard power LED, a 3.3V regulator, and an FTDI header, so you can connect an FTDI friend or FTDI cable and use it with libnfc.
Included are: the PN532 breakout board with a tuned 13.56MHz stripline antenna, 0.1 headers, 2 jumpers/shunts, and a 4050 level shifter chip. We also include a 13.56MHz 1K card!.
