Basic SPDT Relay Carrier - board with connector for SPDT relay

Module with relay HF152FD 16A. It allows you to control devices with a current consumption of up to 16A using a low-power signal. The module has a relay activation time of about 10ms. DFRobot DFR0251

Audio module designed for Teensy 3.2, 3.5, 3.6 and 4.0. It uses the PT8211 16-bit digital to analog converter (DAC) chip. PJRC PT8211-AUDIO-KIT

This SPST solid-state relay module allows for safe switching of DC circuits up to 30 V and 11 A, offering galvanic isolation and low conduction resistance (approx. 30 mΩ) thanks to the use of back-to-back MOSFET transistors. It features fast switching time (up to 1 ms), low control current consumption (approx. 10 mA), and the ability to control a signal from 2.7 to 40 V. Its compact design, lack of mechanical components, and the ability to mount on 2.54 mm connectors or screw terminals make the module a durable and quiet solution for systems requiring reliable insulation and long service life. Pololu 5421

The touch sensor module (touch button) can be used as a replacement for traditional mechanical buttons. It operates based on the TTP223-B system, which measures the capacity of the metal field on the module. The module has a connector in accordance with the Grove standard. Seeed studio 101020037

Membrane keypad module with 12 (3x4) buttons. It is equipped with a tape terminated with a 7-pin connector

Module with a TL281 4-channel optocoupler with a maximum collector-emitter voltage of 80 V

Waveshare 8 Push Buttons module provides 8 single push buttons in 1 board. Waveshare 3678

Universal platform dedicated to Intel Edison modules. Designed for the construction of four-wheeled mobile robots. Seeed Studio 102010028

USB - UART converter based on the PL2303 chip. Compatible with voltages of 1.8 V, 2.5 V, 3.3 V and 5 V, it is equipped with a USB type A connector. Waveshare PL2303 USB UART Board (type A) V2

The 6V 10W USB Step-Up Converter Module converts 4.2-5.2V input voltage to 6V DC output voltage, with a maximum current of 2A and a conversion efficiency of 96%. The device can operate in a wide temperature range, from -40°C to 85°C, which makes it ideal for powering various electronic devices in harsh environments.

Simple to use stepper motor driver, compatible with anything that can output a digital 0..5V pulse or 0..3.3V pulse. Connect a 4-wire stepper motor and a microcontroller and you’ve got precision motor control! EasyDriver drives bi-polar motors, and motors wired as bi-polar. I.e. 4,6, or 8 wire stepper motors. ROB-12779

I2S digital-to-analog converter based on the PCM5122, offering high-quality stereo line-level output, hardware mode operation and optional configuration via I2C or SPI, designed for microcontrollers and Raspberry Pi. Adafruit 6421

The motor driver card can drive 24 servo motors at most. It can be used to drive a multiple-joint robot machine, such as Hexapod Robot, Biped Robot, and Arm Robot. P0288

The protection circuit for one Li-Ion cell with a voltage of 3.7 V. It has the function of charging, discharging and over-discharge protection. The cells can be discharged with a continuous current of up to 12 A

Module with a stepper motor driver based on the DRV8434A system. It allows the bipolar motor to be supplied with current up to 1.2 A per phase and with a voltage from 4.5 V to 45 V. Communication via the SPI interface. Pololu 3769