Step Down converter module with an output voltage from 5 to 12 V and a maximum load of 3.4 A. The board is equipped with two USB connectors and has a built-in fast charging function for smartphones

The complete ESL set from Waveshare enables wireless management of electronic labels in various sizes, making it an ideal solution for stores, warehouses, and industrial signage systems. With BLE support and an integrated cloud platform, the system allows centralized content management with high energy efficiency and long operating time without the need for frequent battery replacement.

4-color e-Paper display with a diagonal of 2.66" and a resolution of 360x184 px. It uses communication via the SPI interface. The set includes only the display without a PCB. Waveshare 2.66inch e-Paper (G)

Cypress EZ-USB FX2LP USB Microcontroller, TQFP100, RoHS

DC-DC Step-Down converter module. It has an input voltage from 9 to 45 V, an output voltage of 9 V and a maximum output current of up to 2.9 A. Pololu 4895

COB LED strip with neutral white light (4000K), density of 384 LED/m, length of 5 m, and power consumption of 10 W/m, intended for indoor installations and powered by 12 V DC. LED0125

Lanberg\'s power distribution unit (PDU), designed for horizontal installation in 19inch server racks, offers a single-phase power input, advanced protections including overload protection and current path shutters, and redundant cable cross-section, which guarantees stable and continuous operation, ideal for professional server environments.

LM386 audio amplifier module. It is supplied with the voltage ranging from 4 to 12 V. The set includes an 8 Ω, 0.5 W loudspeaker. DFRobot DFR0064

4-digit, 8-segment LED display module with 8-level brightness adjustment. Communication via the I2C interface. DFRobot DFR0645-R

Module with a potentiometer with a rotation range of 300°. Equipped with a connector compatible with the Gravity standard. DFRobot DFR0054

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

Module with a button, LED diode and a white cap. DFRobot DFR0029-W

Module with the MQ3 analog alcohol sensor. It enables gas detection and construction of a simple breathalyzer. The module is powered by 5 V and has an analog output. DFRobot SEN0128

Module with an analog MQ7 carbon monoxide sensor. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0132

Module with an analog MQ4 methane sensor. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0129

Module with an analog MQ2 gas sensor. It enables the detection of LPG, butane, propane, methane, alcohol, hydrogen and smoke. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0127

Module with 1 optocoupler type QTRXL with RC (digital) output. It is supplied with the voltage from 2.9 to 5.5 V, detects objects at a distance of up to 80 mm. Pololu 4501

An IoT module that combines a microcontroller with an ARM-Cortex M3 core, WiFi and NFC. It can be programmed in the Arduino IDE or in the Micropython language. DFRobot DFR0477