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

Single-channel Schmitt trigger inverter from the AHC logic family, designed for operation in a wide supply voltage range of 2.0–5.5 V. The SOT-23 package enables compact SMD mounting in digital designs.

5" e-Paper display with 960 x 552 px resolution, HAT driver board, SPI interface and support for Raspberry Pi and other platforms. Low power consumption, no backlight. Waveshare 5inch e-Paper HAT

Single individually addressable WS2812B RGB LED in a 5050 package, mounted on a circular 10mm diameter board. Color is controlled digitally through a single signal line, while the operating voltage is 5V. The manufacturer specifies a maximum current consumption of 60mA per pixel. Soldered 333054

LIN transceiver module based on the NCV7329 IC for connecting a microcontroller as a slave node to a single-wire LIN bus. It supports data rates from 1 to 20kbps and Normal, Standby, and Sleep operating modes. TXD, RXD, and EN pins provide data transmission and operating mode control. Soldered 333027

USB-UART converter based on the CH340 IC with a USB-C connector for communication between a computer and devices equipped with a UART serial interface. A switch selects 3.3V or 5V on the VCC pin, while PWR, RXD, and TXD LEDs indicate power and data activity. Hardware flow control pins provide additional serial communication options. Soldered 333028

ST72F344K4T6, 8-bit MCU with up to 16 Kbytes Flash memory, 10-bit ADC, two 16-bit timers, two I2C, SPI, SCI, LQFP-32

16-channel, 12-bit PWM Fm+ I2C-bus LED controller, TSSOP28, NXP, RoHS

STP80NF10, MOSFET N-channel, 100 V, 0.012 Ω, 80 A, TO-220

BME680 environmental sensor module for measuring temperature, humidity, atmospheric pressure, and parameters used for air quality assessment. It communicates over I2C at address 0x76 and features two Qwiic connectors for integration with compatible boards. The breakout supports 3.3V and 5V power supplies. Soldered 333035

BME280 environmental sensor module for measuring temperature from -40 to 80°C, relative humidity from 0 to 100%, and atmospheric pressure from 30 to 110kPa. It communicates via I2C at address 0x76 and features two Qwiic connectors. The board supports 3.3V and 5V power supplies. Soldered 333036

Real-time clock module based on the PCF85063A IC for independent timekeeping and date tracking. It communicates via I2C at a fixed 0x51 address and provides an alarm function, INT interrupt output, and programmable clock output. An onboard battery holder maintains timekeeping when the main power supply is disconnected. Soldered 333051

STPS1045D, Power Schottky rectifier, 10A, 45V TO-220AC

Two-channel relay module designed for independent control of two AC or DC loads using a microcontroller. Each of the two relays supports loads of up to 10 A at 250 V AC or 10 A at 30 V DC, while the control circuit is compatible with 3.3 V and 5 V logic levels. Soldered 333023

VL53L1X-based ToF laser distance sensor providing a measurement range from 30mm to 4m at ranging rates up to 50Hz. It uses invisible 940nm infrared light, communicates via I2C, and provides an adjustable 15–27° field of view. Qwiic connectors simplify connection to compatible boards. Soldered 333064

Stereo audio amplifier with Bluetooth 4.0 communication. It can be powered with 12 V and has two 25 W outputs

Stereo audio amplifier based on the TPA3116D2 chip. It can be powered with the voltage from 12 to 24 V and has two outputs with a power of 100 W

Breakout board with a female 3.5mm Jack connector providing access to four connections: ground, right audio channel, left audio channel, and microphone. The exposed pins simplify connecting headphones, headsets, and other audio devices to prototype circuits. Soldered 333088

Module with an IR transmitter operating at a frequency of 38kHz. The module is supplied with the voltage from 3 to 5V. FRobot DFR0095