The compact (0.4″ × 0.5″) D24V5F2 synchronous buck voltage regulator takes input voltages between 3 V and 36 V and efficiently reduces them to 2.5 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 80% and 90%. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Radio module with 868 MHz operating frequency. Communication takes place via the UART serial interface. It is supplied with the voltage in the range from 3.4 to 5.5 V. DFRobot TEL0115

LoRa radio module with 433 MHz operating frequency. Communication takes place via the UART serial interface. It is supplied with the voltage in the range from 3.4 to 5.5 V. DFRobot TEL0116

Set with a measuring module and a probe for measuring the pH of wet soil and food products. The module is powered with the voltage of 5 V and has an analog output with a voltage range from 0 to 4 V. DFRobot SEN0249

The TTL TO RS485 (C) module enables the conversion of TTL serial signals to differential RS485 while maintaining high noise immunity and galvanic isolation. With its compact design and built-in ESD and surge protection, it is well-suited for automation systems, IoT, industrial applications, and distributed communication—especially in high-interference environments.

The EC200U-AU C4-P01 development board with the Quectel EC200U-AU LTE Cat 1 module enables the creation of advanced IoT applications using QuecPython. It offers extensive communication capabilities (LTE, Bluetooth, GNSS), support for multiple network protocols, and compatibility with Raspberry Pi accessories. Dedicated interfaces and development tools accelerate the prototyping process in industrial, educational, and research and development projects.

Touch screen (capacitive panel) 2.8 "(320 x 240 pixels) designed for Raspberry Pi A / B. The display is controlled by the SPI interface. Adafruit 1983

Module with an analog sound intensity sensor. It enables measurement in the range from 30 dB to 130 dB with a measurement error of ± 1.5 dB. The module returns the output voltage in the range of 0.6 to 2.6 V. DFRobot SEN0232

13.3" e-Paper Display (B) without controller module is an energy-efficient solution for projects requiring a large data display area. Thanks to the tri-color matrix and SPI support, it is ideal for signage systems, informational labels, and interactive boards using microcontrollers and SBCs.

13.3" e-Paper display with HAT module is a comprehensive solution for presenting static or dynamic information in high sunlight environments. E Ink technology provides a paper-like effect and very low power consumption. The set is compatible with Raspberry Pi, Jetson Nano, Arduino, and STM32, ideal for projects requiring a large, passively refreshed display.

Gravity: Analog TDS Sensor / Meter is an analog water purity measurement module. It is powered by 3.3 ... 5.5V voltage and has an analogue output interface. Module compatible with Arduino. DFRobot SEN0244

AVR, 16kB Flash, 1kB RAM, 512B EEPROM, TQFP44, RoHS

AVR, 128kB Flash, 4kB RAM, 4kB EEPROM, 2xUART, PWM, SPI, ADC, TQFP64, RoHS

Module with PDM microphone. It allows you to receive a sound signal and send it using PDM modulation. Adafruit 3492

RT8289GSP, 5A, 32V, 500kHz Step-Down Converter, SOP-8

Pcam 5C: 5 MP Fixed Focus Color Camera Module with Omnivision OV5640 5 megapixel (MP) color image sensor which includes various internal processing functions, incl. automatic white balance, automatic black level calibration, and controls for adjusting saturation, hue, gamma and sharpness. Digilent 410-358

Xilinx Spartan-3 FPGA, RoHS, VQFP100

32-bit STM32F2 microcontroller with ARM Cortex-M3 core, 1MB Flash memory, 132kB RAM, 120MHz, CAN, Ethernet, I2C, IrDA, LIN, Memory Card, SPI, UART / USART, USB OTG, Brown-out Detect / Reset, DMA, I2S, LCD, POR, PWM, WDT, 1.8 ... 3.6 V, A / D 24x12b; D / A 2x12b, 100-LQFP

LoRa module with RP2040 microcontroller. It uses the SX1262 chip, ensuring reliable long-distance communication in the frequency range from 410 to 525 MHz. Comes with a USB Type-C adapter. Waveshare RP2040-LoRa-LF-Kit