A module that provides a regulated, galvanically isolated power supply. It allows easy changing of the output voltage from 5 V to 3.3 V using the voltage selection pin (VSEL). Galvanic isolation between input and output effectively prevents problems related to ground loops and ground currents, ensuring stability and protection of the system. Pololu 5384

Advanced GNSS receiver based on the Quectel LG290P module, which supports four frequency bands: L1, L2, L5 and E6, enabling reception of signals from GPS, GLONASS, Galileo, BDS, QZSS and NavIC satellite systems. With support for SBAS and PPP, the module provides highly precise positioning, and the built-in anti-jamming unit minimizes electromagnetic interference, which ensures reliability in difficult conditions. The Qwiic connector allows easy integration with systems, and low power consumption makes it an ideal solution for applications requiring long-term battery operation. SparkFun GPS-26620

Power switch that enables efficient power management of devices in the Qwiic ecosystem, allowing selective shutdown of devices and energy saving. The module offers I2C bus isolation, additional GPIO pins and works with SparkFun Qwiic Mux, making it easy to control multiple devices in your projects. SparkFun PRT-26784

The S9V11F3S5CMA switching step-up/step-down regulator efficiently produces a fixed 3.3 V (default) or 5 V (selectable) output whether it is higher or lower than the input voltage, which can range from 2 V to 16 V. (Note: minimum start-up voltage is 3 V, but it operates to 2 V after that.)

Module containing TSH82 operational amplifier from STMicroelectronics. The system has two built-in amplifiers and each of them is available separately on the pins of the board as inverting amplifiers. Sparkfun BOB-14874

An efficient step-down converter that reduces the input voltage to 3.3 V at a maximum current of 100 mA, offering high efficiency due to low quiescent current (<20 μA). It supports input voltages from 3.3 V to 65 V, has a Power Good (PGOOD) function, an EN input for system shutdown, and short circuit and overheat protection, making it a reliable and energy-efficient solution. Pololu 5372

MX1.25-4P To USB Cable is a specialized interface cable for embedded projects and devices requiring a compact USB connection. It allows easy connection of devices with an MX1.25 output to a standard USB Type-A port on a computer or other control equipment. Ideal for integration with Luckfox boards and similar platforms.

Module with a precise clock RTC DS3231 dedicated to the Raspberry Pi. It communicates via the USB interface. SB Components 21185

Pin strip straight in black, double-breasted, female, 2x25, pitch 2.54mm, THT, RoHS. PBD50S

Sensor that detects the concentration of chlorine. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0468

Akyga® AK-UP-07 is a durable and reliable power cable designed for servers and IT infrastructure. Equipped with IEC C14 and C15 connectors, it is intended for use in installations with high power demands. It is ideally suited for connecting devices that require stable power in server, technical, and industrial environments, offering a secure connection even in large-scale UPS systems.

High temperature measuring kit. It consists of a signal conversion module with a range of -270°C to 1372°C and a K-type thermocouple probe with a range of up to 800°C. I2C communication DFRobot DFR0558

The ICS43434 digital MEMS microphone module with an I2S interface that eliminates the need for A/D conversion and provides clean audio output in the range of 50 Hz to 15 kHz. With channel selection and low current consumption, it is suitable for stereo systems, voice recognition and portable applications. Compatible with popular microcontrollers, it provides high quality sound with low noise. Adafruit 6049

A sensor that detects the concentration of hydrogen sulphide. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0467