Module with five reflection sensors. It has digital and analogue outputs. Thanks to the embedded EEPROM memory, it enables easy sensor calibration. Cytron Maker Line

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 3.3 V and a maximum output of 2.5 A to 3.5 A. Pololu 4980

Step-Down DC-DC converter module based on the D24V150F9 chip. Input voltage 11 ... 40V, output voltage 9V (max 15A). Pololu 2884

1.5-meter service power cable designed to replace damaged cables or adapt the plug to CEE 7/7. One end of the cable has three solder wires instead of a traditional plug. Akyga AK-OT-01C

The UM7 orientation sensor from Redshift Labs is an Attitude and Heading Reference System (AHRS) that contains a three-axis accelerometer, rate gyro, and magnetometer. It combines this data using an Extended Kalman Filter to produce attitude and heading estimates.

A single-channel DC motor controller with a UART TTL interface. It is powered from 1.8 V to 22 V and can deliver up to 1.8 A of current. Board with soldered connectors. Pololu 5076

A single-channel DC motor controller with a UART TTL interface. It is powered from 1.8 V to 22 V and can deliver up to 1.8 A of current. Board with connectors for assembly. Pololu 5077

Wireless connectivity module based on the CYW43439, providing Wi-Fi and Bluetooth for projects with RP2040 or RP2350 microcontrollers. Equipped with an SP/CE (JST-SH 8-pin) connector, it allows for quick, solderless connection, and optional pads allow for permanent wired connections. It is fully compatible with Pico W and ideal for IoT, automation, and mobile applications. Pimoroni PIM730

Tic T500 USB is a stepper motor driver based on the MP6500 chip. It allows you to control the stepper motor whose voltage on the coil is 4.5-35V, the maximum current per coil is up to 1.5A. The controller can be controlled by: USB, TTL, I2C, RC (PWM model) etc. Pololu 3134

The analog pH meter, specially designed for Arduino controllers, with the connector (Gravity series). It has an LED which works as the Power Indicator, a BNC connector and PH2.0 sensor interface. The pH measurements at ± 0.1pH (25?). SEN0161

Module with 3-axis accelerometer ADXL343 and precise temperature sensor ADT7410 dedicated to Feather series boards. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 4147

Range finder with a measuring range up to 12m. The current consumption is up to 120mA and the supply voltage 4.5 ... 6V. Communication via the UART interface. DFRobot SEN0259

A solid 1.5 m oxygen-free copper power cable is used to power ATX, ITX adapters and other devices compatible with the IEC C13 plug. Akyga AK-PC-01C

A relay module enabling remote control and automation of devices in IoT systems, smart homes, and industrial automation. Equipped with two independent relays and four digital inputs, it supports 2.4 GHz Wi-Fi, MQTT/MQTTS, and REST API protocols, enabling cloud integration and local control. The module features an AP mode for easy network-free configuration and a color-coded RGB indicator to indicate the device\'s current status. Numato Lab NLWFR002

ARM®-based 32-bit MCU, up to 32 KB Flash, crystal-less USB FS 2.0, CAN, 8 timers, ADC & comm. interfaces, 2.0 - 3.6 V, TSOOP20, STM, RoHS

Kinetis E Series Cortex-M0+, 32-bit MCU, 8KB Flash, TSSOP16, Freescale, RoHS

A two-channel DC motor controller with an I2C interface. It is powered from 1.8 V to 22 V and can deliver up to 1.6 A per motor. Board with soldered connectors. Pololu 5078

LCD 2x20, 116x37mm, no backlight, 9.5mm max, enhanced temperature range, fast (HY-2002A-401-R)

The core of a small robot, either as an auxiliary controller atop a Raspberry Pi base or as a complete control solution on its own. Its Atmel ATmega32U4 microcontroller comes preloaded with an Arduino-compatible bootloader. This version does not include any through-hole components or connectors, allowing for customized assembly or standalone use. Pololu 3118