Modules & breakouts
Clocks, radios, GPS, audio, storage, relays and input modules.
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Adafruit3 × 4 membrane keypad (Adafruit)12-key phone-style keypad with adhesive back, for PIN entry and menus.Keys: 12 (0–9, *, #)Connector: 7-pin 0.1"₹488
AdafruitAdafruit 4-channel I2C-safe level shifter (BSS138)Bi-directional 3.3 V ↔ 5 V level shifter for I2C and other slow signals.Channels: 4Use: I2C, UART, GPIO₹488
AdafruitAdafruit DS3231 precision real-time clockTemperature-compensated clock that keeps time to about a minute a year, with coin-cell backup.Accuracy: ±2 ppmInterface: I2C, STEMMA QT₹2,161
AdafruitAdafruit electret microphone with MAX9814 auto-gainMicrophone with automatic gain control for sound-level meters and voice-reactive projects.Gain: 40/50/60 dB selectableOutput: Analog₹982
AdafruitAdafruit I2C QT rotary encoder with NeoPixelRotary encoder with push button and RGB LED that reports over I2C, so it uses no extra pins.Interface: I2C, STEMMA QTExtras: Push switch, RGB LED₹735
AdafruitAdafruit MAX98357A I2S 3 W class-D amplifierPlays digital audio from an ESP32, Raspberry Pi or RP2040 straight into a speaker, with no DAC needed.Chip: MAX98357AInput: I2S digital audio, 8–96 kHzOutput: 3.2 W into 4 Ω at 5 VSupply: 2.5–5.5 V₹735
AdafruitAdafruit Micro-Lipo charger (USB-C)Tiny USB-C charger for single-cell 3.7 V LiPo batteries, with charge LED.Battery: 1S LiPo / Li-ionCurrent: Up to 500 mA₹735
AdafruitAdafruit microSD card breakout+Level-shifted microSD socket for logging data from 3.3 V or 5 V boards.Interface: SPILogic: 3.3–5 V₹926
AdafruitAdafruit PAM8302 2.5 W mono amplifierSmall class-D amplifier to drive a 4–8 Ω speaker from a microcontroller or DAC.Output: 2.5 W into 4 ΩSupply: 2–5.5 V₹488
AdafruitAdafruit RFM95W LoRa radio breakout (868/915 MHz)Long-range LoRa radio for sending sensor data kilometres with very little power.Chip: SX1276Band: 868/915 MHzInterface: SPI₹2,463
AdafruitAdafruit STEMMA non-latching mini relayRelay board with driver transistor and flyback diode, ready to switch loads from 3.3 V or 5 V boards.Contacts: SPDTControl: 3–5 V logic₹858
AdafruitAdafruit Ultimate GPS breakout (PA1616S)GPS module with 10 Hz updates, a built-in antenna, data logging and a pulse-per-second output.Update rate: Up to 10 HzInterface: UART₹3,698
AdafruitAdafruit USB-C breakout boardBrings a USB-C socket out to 0.1-inch pins, with 5.1 kΩ resistors so chargers supply 5 V.Connector: USB-CPins: VBUS, GND, D+, D−, CC₹365
DFRobotDFPlayer Mini MP3 player modulePlays MP3 and WAV files from a microSD card with a built-in 3 W amplifier.Formats: MP3, WAVAmplifier: 3 WStorage: microSD₹714
DFRobotJoystick module (DFRobot Gravity)Two-axis analog thumb joystick with push button.Outputs: 2 analog + 1 digital₹712
M5StackM5Stack RFID 2 unit (13.56 MHz)Reads and writes 13.56 MHz MIFARE cards and tags over I2C.Frequency: 13.56 MHzInterface: I2C (Grove)₹612