PC817 module with 4 optocouplers

Module with 2-channel DC motor driver DRV8833 designed to work with the Raspberry Pi Pico. It can work with a voltage from 2.7 to 10.8 V and a current of up to 1.2 A. Pimoroni PIM617

Module with 8 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4448

Module with a button and green LED backlight. The board is equipped with a Gravity connector and communicates via a digital interface. DFRobot DFR0785-G

Module with a multi-channel WAV player. It allows you to mix 32 mono or 18 stereo tracks with the ability to connect to any MIDI controller. It has 8 mono or 4 stereo audio outputs. SparkFun WIG-18159

The module with 4 relays, designed to work with the micro:bit. It allows you to control devices with operating parameters up to 120VAC/2A or 24VDC/2A. SB Components 14118

ZL5USB is a USB-UART converter module based on Silabs CP2102. The module has small sizes, microUSB connector and it can works with the 2.5...5.5V signals.

Class-D mono audio amplifier module based on the MAX98357 chip. It can work with a 4 to 8 ohm speaker of up to 2.5 W and communicates via an I2S interface. DFRobot DFR0954

A set of two optical quadrature encoders for Polol micromotors with a two-sided extended shaft, compatible with the LP, MP, and HP series, 5V power supply. Polol 2590

Gravity module designed based on the GP8101S system. It is a single-channel DAC (analog-to-digital) converter with PWM communication that offers an output signal with 8-bit resolution and 0.2% accuracy. It allows you to generate analog signals with a voltage range from 0 to 10 V or 0 to 5 V. DFRobot DFR1036

Module with 4 relays 12 V with a maximum switching current of 7 A. Numato Lab RL40002

The 9V 10W USB Step-Up Converter module converts 4.2-5.2V input voltage to 9V 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.

Industrial grade USB-UART TTL converter. Equipped with a number of security features ensuring stable and safe communication. Waveshare USB TO TTL

The module allows you to attach a strain gauge (working in the Wheatstone bridge circuit) and convert the analog signal into its digital representation, available on the module output lines. The system processes the signal with a 24-bit resolution and can be powered by 2.7V - 5.5V. The module is especially recommended for constructing digital scales in combination with Arduino

2 Channel 5V Relay Module

Stereo 2.8W Class D Audio Amplifier - TS2012

Module with 16-channel PCA9685 servo driver designed for Raspberry Pi minicomputers. The board is equipped with a USB Type C power connector. SparkFun DEV-15316