ESP8266 WiFi Shield - RobotShop

Relay Shield V3 for Arduino - RobotShop

Arduino Motor Shield Rev3 - RobotShop

Whadda WPSH214 RFM69HCW Radio Arduino Shield

Arduino 4 Relays Shield - RobotShop

ESP8266 WiFi Shield - RobotShop

Compatible with BLE Link (BT4.0)/Bluetooth Bee (BT2.1). Embedded DS1307 RTC module to keep time of the Pi. 3 pin headers sensor port for Arduino pins and B+ GPIO. The Arduino Expansion Shield for Raspberry Pi B+/2/3 makes it possible to extend Arduino shield features for your Pi. When building a mobile robot, the Raspberry Pi is used to extend its vision and get a nice tiny monitor.

DFRobot DFR0327 Arduino Expansion Shield for Raspberry Pi B+/2/3

Allows you to enhance the connectivity features. Designed for highly efficient, low-power IoT applications. Possibility to create a small multiprotocol router. Low-power module. Compatible also with MKR boards. The Arduino Portenta CAT.M1/NB IoT GNSS Shield allows you to enhance the connectivity features of your Portenta applications.

Arduino Portenta CAT.M1/NB IoT GNSS Shield ASX00027

DFRobot Arduino-Compatible Screw Shield - RobotShop

ESP8266 ESP-12E UART Wireless WIFI Shield TTL Converter

Arduino MKR Motor Carrier Shield - RobotShop

DFRobot Mega IO Expansion Shield for Arduino MEGA - RobotShop

Designed for Arduino (Not included). Effortlessly connect and control Dynamixel motors. Compatible with a wide range of Dynamixel motors. Supports both TTL and RS-485 communication protocols. Provides reliable power supply for smooth operation. Built-in voltage regulator for stable performance.

ROBOTIS DYNAMIXEL Arduino Compatible Shield