BMS protection module designed for 7 Li-Ion cells. It has a charging function with balancer option and an over-discharge protection function. Dedicated to an electric bicycle or scooter

The module protects the load against reverse polarity to -60 V, but does not block reverse current, which is desirable in applications such as motor control. It uses the LM74500-Q1 controller and a MOSFET transistor. Thanks to its low impedance (3 mΩ), it supports currents up to 20 A continuous and 50 A transient, providing reliable protection and the possibility of easy assembly. Pololu 5386

MCP4018 digital potentiometer module with 5kΩ nominal resistance and 128 adjustment steps. I2C control enables software-based resistance adjustment, while two Qwiic connectors simplify integration with compatible boards. Designed for adjusting signal levels and analog circuit parameters from a microcontroller. Soldered 333090

A cable with a built-in converter that increases the voltage from the USB connector to 9 V. It is equipped with a DC Jack 2.1 x 5.5 mm plug

The SN74LVC1T45DRLR from Texas Instruments is a single-channel, bidirectional voltage level translator, covering a range from 1.65 V to 5.5 V, ideal for signal conversion in microprocessor systems and mobile devices. With automatic detection of the transmission direction and a compact SMD SOT-5X3 package, the device is easy to implement and works well in limited mounting spaces.

An efficient step-down converter that reduces the input voltage to 5 V at a maximum current of 100 mA, offering high efficiency due to low quiescent current (<20 μA). It supports input voltages from 5 V to 65 V, has short circuit and overheating protection, making it a reliable and energy-efficient solution. Pololu 5363

Module with LM2596 step-down converter and LM2577 step-up converter. The inverter has a battery and battery indicator with constant current

The Step-Up converter module converts the voltage in the range of 10-60V to 12-90V with an efficiency of 97% and operates in the temperature range of -20°C to 65°C. The maximum current is 40A at the input and 22A at the output, with a weight of 400g.

The USB Step-Up converter module converts 3.5-12V input voltage to 4-24V output, offering different power values depending on the voltage level. Equipped with a 3-bit digital display, it has a compact size of 80 x 20 x 14mm.

An efficient step-down converter that steps down the input voltage from as low as 45 V to a regulated output voltage range of 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.8 A. It has built-in reverse polarity, overload and short circuit protection, and the spread spectrum function reduces EMI interference. Pololu 4853

12-bit ADS1015 analog-to-digital converter module with four single-ended inputs or two differential inputs. It communicates via I2C, supports conversion rates up to 3.3kSPS, and features a programmable gain amplifier (PGA). Designed for analog signal acquisition in microcontroller-based systems. Soldered 333094

Module with a stepper motor driver based on the DRV8434 system. It allows you to power a bipolar motor with a current of up to 1.2 A per phase and a voltage from 4.5 V to 48 V. Pololu 3762

MCP4018 digital potentiometer module with 10kΩ nominal resistance and 128 adjustment steps. I2C control enables software-based resistance adjustment, while two Qwiic connectors simplify integration with compatible boards. Designed for adjusting signal levels and analog circuit parameters from a microcontroller. Soldered 333091

Adjustable YLY-2088 speaker crossover designed to split an audio signal between a woofer and tweeter. It supports up to 400 W and speakers with an impedance of 4-16 Ω, while four jumpers allow adjustment of the low- and high-frequency characteristics. YLY-2088

RS-232 transceiver module based on the MAX232E, designed for bidirectional conversion between TTL/CMOS logic levels and RS-232 signals. It provides two transmit and two receive channels, allowing simultaneous data transmission and reception. The supply voltage range specified in the documentation is 4.5–5.5V. Soldered 333067

The module contains four 5V relays with a maximum current of 10A (250 VAC) and opto-isolated inputs, and with jumpers it is possible to select switching with high or low status. The module is equipped with screw connectors. modRL04_ISO

Module designed to filter electrical signals. It uses an LC filter, which consists of a coil and a capacitor, to eliminate noise and unwanted components from the electrical signal. It can filter signals with voltages up to 30 V and currents up to 3 A

Single-channel relay module equipped with a Qwiic interface, designed for controlling AC and DC loads using a microcontroller. The relay supports loads of up to 10 A at 250 V AC or 10 A at 30 V DC, while the Qwiic connector allows the module to be connected without soldering using a suitable cable. Soldered 333021

Driver designed for controlling bipolar stepper motors, equipped with the DRV8825 IC and adjustable current limiting. It supports microstepping down to 1/32 step and a current of up to 1.5 A per phase without a heatsink or up to 2.2 A per phase with a heatsink. Soldered 333000

CP2102 USB to UART Module, USB micro connector