Step-Down DC-DC converter module based on the D24V150F9 chip. Input voltage 11 ... 40V, output voltage 9V (max 15A). Pololu 2884

Thermocouple converter module based on the AD8495 circuit with an analogue output. Adafruit 1778

Step-Down converter with adjustable output voltage from 4.2 V to 15 V and output voltage up to 45 V. It is equipped with reverse voltage protection, input undervoltage lockout, overload and short circuit protection. Pololu 4875

Step-Down converter with adjustable output voltage from 4.2 V to 15 V and output voltage up to 45 V. It is equipped with reverse voltage protection, input undervoltage lockout, overload and short circuit protection. Pololu 4855

Lanberg Patchcord is a high-quality solution that provides a fast, stable and reliable network connection, compatible with devices such as routers, switches, and servers, ideal for a variety of environments, from home offices to corporate networks. Lanberg PCU5-10CC-3000-BK

Lanberg Cat.6 30m patch cord provides a fast and stable, high-performance connection, ideal for advanced networking applications. Lanberg PCF6-10CC-3000-R

Heart rate measurement module compatible with Arduino and Raspberry Pi (Gravity: Heart Rate Monitor Sensor For Arduino). It uses PPG technique, which in a simple and cheap way is able to measure the changing volume of blood. DFRobot SEN0203

The compact (0.4″ × 0.5″) D24V5F6 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 6 V while allowing for a maximum output current of 500 mA. Pololu 2844

Single-channel audio amplifier up to 100 W.

Digital gas sensor solution that senses a wide range of Total Volatile Organic Compounds (TVOCs), including equivalent carbon dioxide (eCO2) and metal oxide (MOX) levels, intended for indoor air quality monitoring in personal devices such as watches and phones, but we’ve put it on a breakout board so you can use it as a regular I2C device. SEN-14193

Waterproof temperature sensor adapted to work with Sonoff TH10 / TH16

Mini keyboard with three keys (default "Ctrl", "C" and "V") with the possibility of reprogramming the functions performed. It uses the RP2040 microcontroller from Raspberry Pi and offers RGB backlighting. Connects to a computer via a USB Type-C port. Waveshare RP2040-Keyboard-3-PLUS

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors.

A4988 Stepper Motor Driver Carrier with male header pins installed, so no soldering is required to use it with an appropriate 16-pin socket or solderless breadboard. Pololu 2981

A4988 Stepper Motor Driver Carrier with male header pins installed, so no soldering is required to use it with an appropriate 16-pin socket or solderless breadboard. Pololu 2980

OLED display 128x64 1.54 "AA, 3V SPD0301 I2C SPI Parallel White, working temperature from -40 to +70 ext. 12V

OLED display 1.5 ", resolution 128x128 pixels, 3V SSD1327 SPI GRAY SCALE, work temp. From -40 to +70.

Gravity: Formaldehyde (HCHO) Sensor is a module for measuring the concentration of formaldehyde (methane) in the air. It can be supplied with voltage in the range of 3.3 ... 6V. DFRobot SEN0231

Step-Down Voltage Regulator D24V25F5. Pololu 2850

SEN-13314