USB adapter designed for XBee modules. It can be connected to a computer with a USB cable and used with the X-CTU software to configure the XBee. DFRobot DFR0174

2x16 LCD Module (No Backlight)

Module with hydrogen sulphide sensor made in MEMS technology. It allows gas detection in the range of 0.5 to 50 ppm and has an analog output. DFRobot SEN0568

Waterproof strip with RGB LED diodes, 1 m long (30 LEDs per meter). The LEDs are mounted on a flexible white PCB, the tape has a Grove connector. Seeed Studio 104020108

A universal set of tools for conducting scientific experiments. It consists of the Gravity module: Science Data Acquisition (SCI DAQ) and sensors: soil moisture, VEML7700 light, SHT31-F temperature and humidity, and ENS160 air quality. DFRobot EDU0170

Integrated capacitive fingerprint sensor communicating with the external system via the UART interface. The module has a circular sensor field and takes a fingerprint image with a resolution of 160 x 160 pixels (508dpi). Waveshare UART Fingerprint Sensor (D)

This compact expansion board plugs directly into the GPIO header on a Raspberry Pi B+, A+, or Pi 2 and provides an easy and low-cost solution for driving a pair of small brushed DC motors. Pololu 2753

Methane sensor module made in MEMS technology. It allows gas detection in the range of 1 to 10000 ppm and has an analog output. DFRobot SEN0565

The module with the converter USB-UART CP2104 dedicated for minicomputers Raspberry Pi. Adafruit 3589

Intelligent RFID identifier cooperating with iNode Control Point

Module with a button and blue LED backlight. The board is equipped with a Grove connector and communicates via a digital interface. Seeed Studio 111020046

A small module with a 1.54" LCD display and a resolution of 240x240 pixels, equipped with a WiFi ESP-12E module. It is programmed via a USB type C connector. SB Components 25626

Expansion board with L6474 stepper motor driver. It is equipped with a connector compatible with Arduino Uno R3 and STM32 Nucleo. STMicroelectronics X-NUCLEO-IHM01A1

Module with a button and yellow LED backlight. The board is equipped with a Grove connector and communicates via a digital interface. Seeed Studio 111020045

WIG-12897WAV file player module controlled by UART interface or switching inputs. It is based on a 2 W audio amplifier. The board has a 3.5 mm audio output and a speaker connector. The files are played from the microSD card. SparkFun DEV-13660

4-channel input selector for audio amplifier. Equipped with terminal connectors and controlled by a rotary switch

Class A power amplifier with two channels, 45 W. Built on the popular J. Hood design from 1969

Low Energy Bluetooth adapter module with 2x4 pin 2.54mm connector, extra / high. RS232 allows communication with BLE devices

The GPS receiver is equipped with a GP-735T module. It is supplied with the voltage from 3.3 to 5.5 V and communicates via the UART interface. SparkFun GPS-13670

DFRobot (FIT0004)