PC817 module with two optocouplers

16-channel PoE GPI/GPO module enabling connection of a PC to other electronic circuits via a network. It does not need a separate cable for power and data transmission. It can be controlled via a simple web interface or Telnet. Numato Lab NLGP1001-A

A volume sensor designed to detect loud ambient sounds. The module uses a microphone and LM2904 amplifier. The output value (analog signal) depends on the volume of the detected sound. In order to eliminate interference, the microphone signal is subjected to double filtering. Seeed studio 101020063

The TDA2050 35W Audio Power Amplifier Module offers excellent output power, power supply flexibility, ease of integration, and user safety, making it an ideal solution for small audio projects

ROB-12567

MEMS SPU0414HR5H-SB analog microphone module. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020852

KAmodPCA9533 is a module with LED driver from NXP. The module allows you to control the brightness of 4 LEDs using programmable PWM signals (with a frequency from 0.591 Hz to 152 Hz). I2C interface. The board is equipped with a Pmod I2C standard connector and a KAMAMI connector

A module that allows you to connect four cameras to a Raspberry Pi. It supports cameras with MIPI interface with a resolution of 5 Mpx, 8 Mpx and 12 Mpx. Arducam B012001

Ultrasonic distance sensor MB1030 with a range from 0 to 645 cm. It has an output in the form of a serial interface, analog signal or generates an impulse whose duration is proportional to the measured distance. Pololu 793

A multifunctional module with an optical sensor for measuring the intensity of illumination, the color of the incident RGB light, the distance from the object and the detection of 3D gestures. Detection range from 10 to 20 cm, communication via I2C. SparkFun SEN-12787

Module with analog output 0-20 mA or 4-20 mA. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP3076ADAM

Audio module with DAC, headphone amplifier and display, designed to work with the Raspberry Pi. It is based on the PCM5100A system and communicates via the I2S interface. Pimoroni PIM482

Mini HDMI adapter with FFC connector. Designed for prototyping devices with a mini HDMI interface. Waveshare Mini HDMI Adapter Horizontal

150 W Step-Up converter with an output voltage of 15to 35 V, an input voltage of 10 to 32 V and a maximum current of up to 6 A

Bluetooth 4.2 audio receiver with 3.5 mm jack audio output. It allows you to play files via Bluetooth and supports WAV, WMA APE, MP3 and FLAC formats. MH-M28

Module with a digital rotary encoder controlled by the I2C interface. The potentiometer has RGB LED backlight. The encoder generates post-movement information with 24 levels per revolution and rotation direction detection. SparkFun DEV-15083

Module with EEPROM memory with a capacity of 256 Kbit (32 kB) with the AT24C256 chip in the DIP version. It communicates via the I2C interface