Module with 8 digital inputs and 4 relays with a maximum switching current of 2 A. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP8024ADAM

Adafruit 1222

2.8inch Capacitive Touch LCD is a compact display module with a capacitive touch panel, ideal for projects with microcontrollers and single-board computers. Integrated drivers, multi-platform support, and fast touch response make this screen suitable for user interfaces, control panels, IoT systems, and educational electronic applications.

Camera with a resolution of 2 MPx with a USB interface in a metal case. Equipped with CMOS IMX291 sensor with "Fisheye" lens with 175° viewing angle and microphone. ArduCAM B026101

The DC BUCK Adapter (7.2V) is a compact switching regulator designed to power servos that communicate via serial bus. With a wide input voltage range and easy installation, the module is ideal for robotic systems and applications requiring stable 7.2 V power from various energy sources.

Communication module with the SIM800C system designed for Raspberry Pi minicomputers. Adds support for GSM/GPRS networks. Waveshare SIM800C GSM/GPRS HAT

Module with 8 analog inputs for current measurement in the range of 0 to 20 mA or 4 to 20 mA. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP3082ADAM

EC200U‑EU C4‑P01 is an economical and functional board for developing IoT solutions with LTE Cat‑1 connectivity, GNSS positioning, and optional Bluetooth. With support for QuecPython, HAT compatibility, and a rich set of indicators and connectors, it serves as an excellent foundation for monitoring, telemetry, and mobile communication applications.

BME688 integrated gas, pressure, temperature and humidity sensor module housed in a single MEMS package. It features a Grove connector and communicates via an I2C or SPI interface. Seeed Studio 114992989

8-bit ST7 MCU, 4kB Flash, 256B RAM, Lite Timer with Watchdog, Autoreload Timer with 32-MHz input clock, SPI, 10-bit ADC with Op-Amp, SOP20, RoHS

Module with 8 analog inputs for voltage measurement in the range from 0 to 10 V. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP3084ADAM

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

A high-resolution, 240x240 pixel circular display ideal for smartwatch, wearable device, and small interface projects. The module supports an SPI interface, has a built-in 3.3V regulator, level converter, and microSD card reader for loading graphics. The display offers a wide viewing angle of up to 80° and vivid colors. Compatible with Arduino, Raspberry Pi, and other microcontrollers, it\'s easy to integrate. Adafruit 6178

Designed to work with the Raspberry Pi 5 or Feather RP2350 boards, this tiny FPC module enables high-speed data transfer using differential signal pairs for video transmission. Using a 0.5mm pitch, 22-pin FPC cable, the module provides four data channels for the Pi 5 or three for the HSTX, plus additional 3.3V power, I2C, and GPIO outputs for flexible connection and customization. Adafruit 6014

The ESP32 WiFi and Bluetooth module has a dual-core 32-bit MCU that integrates WiFi HT40 and Bluetooth / BLE 4.2 technology. Designed for mobile devices and Internet of Things (IoT) applications. DFRobot TEL0111

Precise solar radiation intensity sensor in the range from 400 to 1100 nm, communicating via Modbus-RTU (RS485) and resistant to harsh conditions thanks to the aluminum housing class IP67. High accuracy (±5%), fast response time (≤10 s) and resistance to dirt make it ideal for monitoring photovoltaics, environmental research and meteorology. DFRobot SEN0640

A set of test leads 2x4 (4 signal and 4 GND) with a length of 23cm and 22AWG intended for logic analyzers Saleae.

The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5250

This Kit with fully-dedicated PWM driver chip handles all the motor and speed controls over I2C. Only two data pins (SDA & SCL in addition to the power pins GND & 5V) are required to drive the multiple motors; you can also connect any other I2C devices or shields to the same pins. This  makes it drop-in compatible with any Arduino, such as the Uno, Due, Leonardo and Mega R3. Adafruit 1438

Comprehensive development platform for Espressif ESP32 a WiFi-compatible microcontroller and nearly 30 I/O pins. DEV-13907