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

Step-Down converter with an output voltage of 5 V, input voltage from 9 to 36 V and a maximum current of 5 A. The board is equipped with a DC input connector and an output USB connector

Pololu Simple Motor Controller 18v7

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

Pololu Simple High-Power Motor Controller 24v23

Adapter designed for connecting conventional I2C modules to the Qwiic bus. It provides 2 Qwiic connectors and through-hole connections for SCL, SDA, 3.3 V, and GND, allowing modules without a native Qwiic connector to be integrated into a Qwiic system. Soldered 333015

Load cell amplifier module with a 24-bit HX711 ADC and an ATtiny404 microcontroller providing measurement data over I2C/Qwiic. It supports Wheatstone bridge load cells, two differential input channels, and selectable I2C addresses from 0x30 to 0x37. The supply voltage range is 2.6–5.5V. Soldered 333006

8-channel I2C bus multiplexer based on the TCA9548A, allowing devices with identical I2C addresses to operate with one microcontroller. The multiplexer address can be configured from 0x70 to 0x77 using A0–A2 jumpers, while 10 Qwiic connectors simplify solderless connections. Operating voltage range is 1.65–5.5V. Soldered 333077

High-current brushless electronic speed controller designed for demanding RC applications, including drones, aircraft, helicopters, boats and RC vehicles. It supports 5–14S LiPo batteries, provides up to 200 A continuous current and features a high-power adjustable BEC together with active fan cooling. SEQURE 14200 Pro Brushless ESC AM32

Real-time clock module based on the RV3028 chip. It is powered with the voltage from 2 to 5 V and communicates via the I2C interface. There is also a socket with a battery on the board. Pimoroni PIM449

Audio module with DAC, line output and display, designed to work with the Raspberry Pi. Pimoroni PIM483

The 4-in-1 electronic speed controller supports 4–8S LiPo and LiHV batteries and provides a continuous current of up to 160 A per channel. The STM32G071 processor, AM32 firmware, telemetry, integrated current measurement, and 16 V / 2 A BEC support use in racing, freestyle, and high-power FPV drones. SEQURE E160 G2 4-8S AM32

Audio module with DAC converter and mono amplifier, designed to work with the Raspberry Pi. Pimoroni PIM541

Audio module with DAC, headphone amplifier and display, designed to work with the Raspberry Pi. It is based on the PCM5100A system and communicates via the I2S interface. Pimoroni PIM482

High-current brushless electronic speed controller designed for demanding RC applications, including drones, aircraft, boats, and RC vehicles. It supports 5–14S LiPo batteries, provides up to 200 A continuous current, and uses AM32 firmware for flexible motor control. The metal heatsink supports effective heat dissipation under high loads. SEQURE 14200

High-current brushless electronic speed controller designed for demanding RC applications, including drones, aircraft, helicopters, boats, and RC vehicles. It supports 5–14S LiPo batteries, provides up to 200 A continuous current, and features an adjustable 3 A BEC. SEQURE 14200M

High-current waterproof brushless electronic speed controller designed for demanding RC and marine applications. It supports 5–14S LiPo batteries, provides up to 200 A continuous current and features an IP68-rated enclosure for operation in wet environments and underwater applications. SEQURE WP14200 A IP68 Waterproof ESC

Load cell amplifier module with a 24-bit HX711 ADC for use with Wheatstone bridge-based sensors. It provides two differential input channels and DAT and SCK lines for direct communication with a microcontroller. The supply voltage range is 2.7–5.5V and board dimensions are 22 × 22mm. Soldered 333005

LM386 audio amplifier module in a set with a loudspeaker. The board is equipped with a Grove connector and is controlled by a PWM signal. Seeed Studio 101020853

Module for recording sounds, which can store recordings up to 20 seconds. The board is equipped with a Grove connector and communicates via a digital interface. Seeed Studio 107020007