DFRobot Gravity - Module with 5 A relay

KAmodMMA7361LC is an accelerometer module with an analogue output, equipped with the MMA7361LC chip. It has a embedded voltage regulator, so it can be used in systems supplied with voltage of 2.5...5.5V.

KAmodMIC_ELECTRET is a module with microphone KPCM6B type. Thanks to embedded amplifier with hundredfold amplification of signal, output voltage can be measurement in microcontroller with using e.g. ADC converter.

The Pololu A-Star 32U4 Prime is a general-purpose programmable board based on Atmel’s ATmega32U4 AVR microcontroller and arranged in the common Arduino form factor exemplified by the Uno R3 and Leonardo. Pololu 3107

A-Star 32U4 Prime SV - a programmable Arduino board, based on the Atmel ATmega32U4 microcontroller from the AVR family. Version with soldered connectors, without micro-SD card slot, without display. Polol 3113

The Pololu A-Star 32U4 Prime is a general-purpose programmable board based on Atmel’s ATmega32U4 AVR microcontroller and arranged in the common Arduino form factor exemplified by the Uno R3 and Leonardo. Pololu 3114

The A-Star 32U4 Prime SV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products. Pololu 3115

Tiny programmable module featuring Microchip’s PIC18F25K50 microcontroller. It packs a Micro-USB interface and 16 digital input/output pins onto a 1″×0.6″ board and ships preloaded with a USB bootloader, so no external programmer is required. Pololu 3150

The A-Star 32U4 Mini LV is a programmable module based on the ATmega32U4 from Atmel. Unlike competing products, it has an onboard switching step-up/step-down regulator that allows it to be powered efficiently from a 2.7 V to 11.8 V supply. Pololu 3103

The A-Star 32U4 Mini ULV is a programmable module based on the ATmega32U4 from Atmel. Unlike competing products, it has an onboard switching step-up regulator that allows it to be powered efficiently from a 0.5 V to 5.5 V supply. Pololu 3102

KAmodWS2812-1 is a module with WS2812 multicolor LED. Thanks to the embedded controller, LED can be series connected to makes an amazing light effects. KAmodWS2812-1

This V2 Rotation Sensor  is arduino compatible multi-ring rotation sensor. It is based on multi-turn precision potentiometer. It can rotate upto 10 laps. DFR0058

Based on the versatile ATmega328, the Metro Mini packs 32KB Flash, 2KB RAM, a clock speed 16Mhz and the Optiboot bootloader. The slick black and gold unit includes 20 GPIO pins. Adafruit 2488 

Development board ESP8266 with WiFi module; WRL-13231

Expansion board for WRTnode computer with 4 USB ports and 100Mb Ethernet interface. Shield has connectors with SPI, UART, I2C interfaces. DFRobot DFR0352

Dreamer Nano V4 - Arduino Leonardo compatible; ATmega 32U4

Module for learning the basics of electronic engineering; illustrates the relationship between voltage, current, and allows the generation and observation of signals. It has the ability to sample the signal up to 200kSPS in a 16-bit converter. Powered from the USB port. ADALM1000