Multilingual voice synthesizer module. Converts a stream of digital text to natural sound. Using the widely recognized DECtalk text and speech synthesizer engine. Sparkfun DEV-11711

The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5255

This disc load cell (sometimes called a strain gauge) can translate up to a whopping 200kg of pressure (force) into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to, and proportional of, the strain (e.g. pressure or force) applied to the disc. SEN-13332

HMI (Human-Machine Interface) operator panel for visualization and interaction with automation systems. It uses a 4.3" LCD display with 480x272 pixel resolution with a touch panel. It supports various communication protocols such as RS232 and RS485. Samkoon EA-043A

HMI (Human-Machine Interface) operator panel for visualization and interaction with automation systems. It uses a 7" LCD display with 800x480 pixel resolution with a touch panel. It supports various communication protocols such as RS232 and RS485. Samkoon EA-070B

DFRobot 315MHz RF receiver module using SC2272-L4 low power decoder chip. DFRobot TEL0112

This compact board breaks out the pins of a microSD card connector necessary to interface with the card through SPI (Serial Peripheral Interface), and it can be directly integrated into 5 V systems thanks to its on board 3.3 V regulator and level shifting circuity. Pololu 2587

The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5252

Module with LCD IPS display, 0.96" diagonal and 160x80 px resolution. Communication via SPI interface. Waveshare Pico-LCD-0.96

Module with 8 digital inputs and 4 relays with a maximum switching current of 2 A. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP8024ADAM

Module with 13 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4113

The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5256

RGB LED matrix module with 64 APA102-2020 diodes in 8x8 arrangement. It is powered by 5V by the pads located on the bottom of the board and controlled by the SPI interface. SparkFun COM-15047

Expansion board based on the Wiznet W5200 Ethernet system. It allows you to easily connect Arduino to an Ethernet network. DFRobot DFR0125

Module with 7 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4247

Module with 25 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4325

32-bit microcontroller from the STM32F7 family with ARM Cortex-M7 core, 512kB Flash memory, 320kB SRAM, I2C, SPI, UART / USART memory, USB, CAN, 1.7 ... 3.6V, 144LQFP, STM, RoHS

Module with 6-axis IMU LSM6DSO sensor, which combines a 3-axis accelerometer and gyroscope, as well as a 9kB FIFO buffer and event handling functions. Communicates via I2C or SPI. SparkFun SEN-18020

Module with 13 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4453

Module with the SX1276 868 MHz system for LoRa communication, designed for FireBeetle boards. It communicates via the SPI interface. DFRobot TEL0125