This compact module allows for convenient control of servos communicating via UART in half-duplex or full-duplex mode, making it suitable for a variety of robotic projects. Equipped with Molex connectors and additional pins, it allows for easy integration of popular servos, such as the LX-16A, as well as models from other manufacturers. The module offers high-current power output, ensuring stable operation of complex systems with multiple servos. Pimoroni PIM697

This module supports four servos with direct power supply ranging from 5-17V, allowing for the construction of high-power designs. The module features standard servo connectors and two analog inputs that can be used to interface with sensors or servos with feedback. Pimoroni PIM695

Pololu Micro Serial Servo Controller (partial kit)

Gravity: Digital 10A Relay Module is a module with 10A 35VAC / 30VDC relay compatible with devices with control signals in the range of 2.8 ... 5.5V. DFRobot DFR0473

Data logger programmed to automatically record data from GPS and Qwiic series sensors. It has a built-in ESP32-WROOM-32E module and IMU sensors ISM330DHCX (accelerometer and gyroscope) and MMC5983MA (magnetometer). SparkFun DEV-20594

This controller allows independent control of three DC motors using a single I²C bus. It supports motor supply voltages ranging from 4.5 to 44 V and currents up to 0.8 A continuous per channel, making it suitable for a wide range of robotic and mobile applications. I²C communication eliminates the need to generate PWM signals and significantly saves microcontroller pins. The ability to connect multiple controllers on a single bus allows for easy scaling of the system to larger motor counts. Pololu 5083

AP3429A DC-DC Step-Down Converter Module with 1.8 V output voltage, 2.7 to 5.5 V input voltage and 2 A maximum output current. SparkFun COM-21338

Module with real time clock (RTC) PCF8523 dedicated for minicomputers Raspberry Pi. It communicates via the I2C interface. Adafruit 3386

This controller allows independent control of three DC motors using a single I²C bus. It supports motor supply voltages ranging from 4.5 to 44 V and currents up to 0.8 A continuous per channel, making it suitable for a wide range of robotic and mobile applications. I²C communication eliminates the need to generate PWM signals and significantly saves microcontroller pins. The ability to connect multiple controllers on a single bus allows for easy scaling of the system to larger motor counts. Pololu 5082

Industrial 6-channel relay module based on the RP2350 microcontroller, featuring an isolated RS485 interface, Pico HAT-compatible header, advanced isolation protection circuits, and integrated Wi-Fi and Bluetooth connectivity, designed for industrial automation and device control. Waveshare RP2350-Relay-6CH-W

RGB color control board based on STP04CM05, STM, RoHS

This module allows you to control two SPDT relays and eight digital inputs up to 24V. Powered via USB Type-C, it operates as a CDC device, allowing for simple operation without additional software. The module is ideal for home automation, IoT projects, test systems, and lighting control. Indicator LEDs and a rugged design ensure intuitive control and reliable operation in a variety of applications. Numato Lab NLUSBRC002

EVLSERVO1 is a reference servo drive from STMicroelectronics designed for driving three-phase BLDC motors with output power up to 2 kW (or 3 kW with active cooling), based on the STSPIN32G4 system-in-package integrating an STM32G4 microcontroller. The module supports advanced control algorithms such as FOC and 6-step commutation, multiple feedback methods, and CAN communication, making it a complete development platform for industrial automation and motion control applications. EVLSERVO1 STMicroelectronics

The CY7C65213 USB to UART serial breakout is designed to provide users with a means to access all available I/O pins on the IC, and to provide a 6-pin UART header that is compatible with other SparkFun breakout boards. This breakout has a microUSB connector and other support circuitry to get the IC quickly up and running. BOB-13830

The S9V11F5 switching step-up/step-down regulator efficiently produces 5V from input voltages between 2V and 16V. Pololu 2836

Versatile USB protocol converter, offering four channels (RS485, RS232, two TTL) and 12V, 5V and 3.3V power supply, ideal for IoT and industrial applications. Compatible with Windows, Linux, LattePanda and Raspberry Pi, no drivers required, and optional installation allows easy device management. DFRobot TEL0185

The VM-CLAP1 Hand Clap Sensor from Verbal Machines is a low-power, microprocessor-based audio sensor that can detect hand claps or finger snaps while ignoring background noises such as human speech or music. Pololu 2580

3-channel constant current LED driver module, RoHS

The Step-Down D24V3AHV Buck Voltage Regulator module with adjustable output voltage in the range of 4-25V with a wide input voltage range of 4.5-42V and a maximum output current of 300 mA. Pololu 2102

This step-down converter module allows you to reduce the voltage from 15-60V to a stable 15V at a current of up to 8A. Its high efficiency of up to 95% and low power losses make it ideal for applications requiring high current and stable power. The device features built-in overcurrent, thermal, and reverse connection protection, as well as a soft-start function and a Power Good indication. Pololu 5679