Expansion Shield X200 is a most cost-effective shield which could apply to Raspberry Pi Model B+ and Raspberry Pi 2 Model B. It integrates a lot of very useful functions such as RTC real time clock; audio input and output; VGA output; USB hub; WIFI; 8-way GPIO; DFR0357

Radio module with the RFM69HCW (868 MHz or 915 MHz) system, designed to work with the Raspberry Pi. Equipped with an OLED display and buttons. Adafruit 4072

PCIe To M.2 E KEY HAT+ adapter expands the capabilities of the Raspberry Pi 5 with support for high-speed Wi-Fi/Bluetooth network cards in M.2 E Key format. It supports direct PCIe connection and Bluetooth integration via USB. Robust antenna connectors and compliance with the HAT+ standard make it an ideal solution for IoT projects, network gateways, and compact routers based on the Raspberry Pi 5.

Extension module compatible with Raspberry Pi. The board is equipped with three 24 V 2 A relays, three buffer inputs, three sink outputs and three analog inputs with a working range up to 24 V. Pimoroni PIM213

Seeed Studio 8-channel 12-bit ADC module designed to add analog inputs to Raspberry Pi. The board communicates over I2C, provides 8 analog channels A0–A7 and 4 Grove Analog connectors, and operates at 3.3V. Current versions may use the MM32F031F6P6 instead of STM32F030F4P6TR while preserving the same functions and usage. Seeed Studio 103030280

GrovePi + is an extension in the form of a HAT overlay intended for Raspberry Pi computers (B / B + / A + / 2/3/3 +). The module has 15 connectors to which modules / sensors compatible with the Grove standard can be connected. Seeed Studio 103010002

Adafruit 2348

Seeed Studio real-time clock module based on the DS3231 and designed for Raspberry Pi systems using the I2C interface. The RTC maintains seconds, minutes, hours, day, date, month and year information, providing an independent time source for data logging, automation and offline applications. Seeed Studio 103030278

This programmable module combines with a Raspberry Pi to serve as the control center of a small robot or electronics project. Its Atmel ATmega32U4 microcontroller comes preloaded with an Arduino-compatible bootloader, and the board includes dual motor drivers that can deliver 1.8 A per channel to two brushed DC motors.

Module with e-Paper display, 3.7" diagonal and 480x280 px resolution. Communication via SPI interface. Waveshare 3.7inch e-Paper HAT

This compact expansion module easily adds a 4-pin JST SH (Stemma QT/Qwiic) connector to your Raspberry Pi or other single-board computer. It allows for quick, solderless connection of I2C sensors and devices, while providing stable power thanks to the built-in 3.3V regulator. The module includes a built-in power LED and 10kΩ pull-up resistors for the I2C lines. Adafruit 6365

Extension module dedicated to matrix displays with HUB75 interface. Designed for minicomputers Raspberry Pi. Adafruit 3211

Module with a 10-channel ADC ADS1263 converter with a resolution of 32-bits designed to work with the minicomputer Raspberry Pi and Jetson Nano. Waveshare High-Precision AD HAT

An expansion module based on the SX1302 chip that transforms the Raspberry Pi into a complete LoRaWAN gateway. Equipped with GPS, a real-time clock (RTC), and a cooling fan, it ensures stable and precise operation in IoT applications. It supports the 868 MHz and 915 MHz bands and is compatible with most Raspberry Pi models. Its compact design and support for GPS, GLONASS, and BeiDou systems make it ideal for smart city projects, agriculture, and environmental monitoring. The Elecrow LR1302 868M/915M LoRaWAN Gateway

Expansion Shield X300 with RTC real time clock; audio input and output; USB hub; Bluletooth, WIFI; SATA interface. Compatible with Raspberry Pi Model B+, Pi 2 Model B and Pi 3 Model B

Module with black and white e-Paper display with 2.9" diagonal. Equipped with SPI interface for image display and I2C interface for touch panel. Waveshare 2.9inch Touch e-Paper HAT

HAT+ module intended for Raspberry Pi 5 enabling power supply via Ethernet in the PoE standard and connection of an M.2 NVMe drive via the PCI Express interface. Waveshare 31536

Integrated BME688 gas, pressure, temperature and humidity sensor in one MEMS housing. The system can be supplied with the voltage of 3.3 V and is equipped with an I2C communication interface. BME688 Breakout Board

Audio module with DAC, stereo amplifier and display, designed to work with the Raspberry Pi. Pimoroni PIM484