Single-channel brushed DC motor driver based on the MPQ6612A chip, enabling bidirectional motor control with a supply voltage of 4-40 V and up to 4 A continuous current. The module provides motor current sensing, active current limiting, overcurrent and thermal protection, and supports PWM control up to 200 kHz. The carrier board does not include soldered connectors, allowing direct soldering of wires or custom connectors. Pololu 5285

Single-channel IR reflectance sensor using an infrared LED and phototransistor to detect changes in surface reflectivity, generating an analog output voltage from 0–VCC. Operates at 2.9–5.5 V, with an optimal sensing distance of ~5 mm (up to 30 mm max), adjustable IR emitter brightness, and a 4-pin JST SH connector, designed for line detection, edge detection, and obstacle sensing in robotics and automation projects. Pololu 4240

8-channel I2C expander module based on the PCA9548 chip. Allows communication with multiple I2C devices that have the same address. Equipped with STEMMA QT connectors. Adafruit 5626

Set of 5 miniature LED Sequin modules with a Cool White LED in a 1206 package and a 100 Ω resistor. Designed for wearable electronics and e-textile projects, powered from 3 - 6 V and controllable via a microcontroller or directly from a battery. Adafruit 6456

Module with OTP-538U non-contact temperature sensor. The board is equipped with a Grove connector and has analog outputs. Seeed Studio 101020062

Set of 5 miniature LED Sequin modules with an Emerald Green LED in a 1206 package and a 100 Ω resistor. Designed for wearable electronics and e-textile projects, powered from 3 - 6 V and controllable via a microcontroller or directly from a battery. Adafruit 1756

This set of two quadrature encoders for 20D extended-shaft motors provides precise rotational speed monitoring with 20 pulses per revolution of the motor shaft. The devices utilize a magnetic disc and Hall-effect sensors operating from 2.7-18V, and the digital outputs can be connected directly to a microcontroller. The encoders mount directly to the back of the motor, and the compact design and 6-pin JST PH connectors facilitate integration into robotic projects and control systems. Pololu 5660

A set for building a weather station equipped with a rainfall sensor and a wind speed and direction meter. SparkFun SEN-15901

Set of 5 miniature LED Sequin modules with a Royal Blue LED in a 1206 package and a 100 Ω resistor. Designed for wearable electronics and e-textile projects, powered from 3 - 6 V and controllable via a microcontroller or directly from a battery. Adafruit 1757

DFRobot SEN0634 camera module with OV9281 sensor and global shutter allows capturing sharp images of fast-moving objects. High sensitivity in low-light conditions and full compatibility with Raspberry Pi 4B and 5 make it a suitable solution for projects requiring precise motion recognition and real-time image detection.

DFRobot DFR1184 module with a 15-bit ADS1115 converter enables precise voltage measurements of 0–10 V from industrial sensors. The dual-channel design, support for I2C/UART, and compatibility with popular platforms make it an effective solution for automation systems, environmental monitoring, and energy management.

A module with an electret microphone and an amplifier that will allow you to detect a voice, a clap or a door slam using the analog output

Module with temperature and humidity sensor DHT11. It uses a 1-wire communication interface and has a humidity measurement range from 20 to 90% with an accuracy of 5% and temperature from 0 to 50 ºC with an accuracy of 2 ºC

Module with SSR M281 relay with a load of up to 1 A. The board is equipped with a Grove connector and is controlled by a digital input. Seeed Studio 101020603

DC-DC step-down converter module 5V 16A used to convert energy from 6-24V input voltage to stable 5V, providing up to 16A current. Thanks to high conversion efficiency (over 90%) and low ripple (<20mV), it is ideal for powering sensitive devices in applications such as robotics, drones or LED lighting systems. Additionally, built-in overheating and short-circuit protection mechanisms ensure reliable operation even in difficult conditions. DFRobot DFR1202

Test lead set with crocodile clips for digital multimeters, 1000 mm length, max. 600 V / 10 A, CAT III, Class II insulation. Yato YT-73078

Compact optical sensor based on the ITR9608 switch, which detects the presence of objects by interrupting a beam of light in a 5 mm gap. Thanks to high precision and compatibility with platforms such as Arduino or micro:bit, it is ideal for applications in robotics, automation and education. DFRobot DFR1129

A compact biometric module with a capacitive touch sensor and a built-in fingerprint recognition algorithm. It enables fast fingerprint matching in less than 0.5 seconds and stores up to 1,000 patterns. It supports UART and USB communication, making it easy to integrate with computers and microcontrollers. Waveshare UART Fingerprint Sensor (F)

Educational module for measuring force in the range from 30 g to 1.5 kg, based on a flexible material that responds with a change in the analog signal. Thanks to its small thickness (0.4 mm), fast response and compatibility with Arduino, micro:bit and Unihiker, it is ideal for teaching physics, engineering and DIY projects. DFRobot SEN0616

Module with IPS LCD display with a diagonal of 2" and a resolution of 320x240 px. Communication via the SPI interface. Waveshare Pico-LCD-2