Works with any USB Bluetooth adapters, running in slave role: Pair with BT dongle. Led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane | Core module uses HC-06, leads from the module interface includes VCC, GND, TXD, RXD, reserve LED status output pin, the microcontroller can be judged by the foot state Bluetooth has connected KEY pin slave invalid. | Small size, low power consumption,high sensitivity for send and receive. Bluetooth version: V2.0+EDR &Operating voltage: 3.3V &Host Interface:UART &Storage Temperature:-40℃~+150℃&Signal coverage: 30ft &Item size: 4.3 * 1.6 * 0.7cm &Item weight: 3g. | The module is mainly used for short-range data wireless transmission,such as Bluetooth wireless data transmission,Industrial remote control, telemetry,Traffic, underground positioning, alarm,Smart home ect. | Industrial serial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc. Computer and peripheral devices.

supports sampling rates (KHz): 8/11.025/12/16/22.05/24/32/44.1/48 | MP3 Player Audio Voice Module

High-performance wireless data transmission chip NRF24L01 +, an increase of high-power PA and LNA chips, RF switches, band-pass filters and other professional full bidirectional RF power amplifier, making the effective communication distance has been greatly expanded. | NRF24L01P + PA + LNA wireless module works in the license-free 2.4G ISM band, can be point-to-point applications can also form a star network. | In the RF part of a large number of optimized matching debugging, making the highest transmission efficiency, the smallest harmonic, making NRF24L01P + PA + LNA wireless module to external radio equipment to achieve the lowest radio frequency interference, but also not susceptible to interference from other devices, extremely large Improve the stability of the work. | NRF24L01P + PA + LNA wireless module is highly integrated, the size of only 41mm * 15.5mm, easy to embed in any space-stressed products. | Customers only need to add one MCU to control NRF24L01P + PA + LNA through SPI port ,Wireless module to complete ultra-long-range wireless data transmission system design.Do not need to worry about R & D of RF part, drastically reduce R & D expense and shorten R & D cycle.

Communication Interface: IIC | 16-way steering gear control | Voltage: DC5-10V power supply | The PCA9685 chip is wrapped in the center of the board | All PWM output lines have a 220 ohm series resistor protection and can easily drive LED.

HiLetgo TEC1-12706 Semiconductor Refrigeration | RoHS compliant | Photonic and medical systems

3.3V and 5V dual power output | 3.3V and 5V IO compatible | USB 2.0 protocol

ESP32 CP2012 USB C (Type-C) core board, it has 38 pins and more features than a 30-pin module. Narrower width, can be connected to the breadboard very well. | ESP32 integrates antenna, switches, RF balun, power amplifiers, low noise amplifiers, filters and power management modules. | Support many kinds of interfaces such as UART/SPI/I2C/PWM/DAC/ADC. | With 2.4GHz WiFi+Bluetooth Dual-mode, support STA/AP/STA+AP mode, universal AT command, easy to use.

ESP8266 has powerful on-board processing and storage capabilities | Support 3 modes: AP, STA, AP + STA | Document link: https:https://nurdspace.nl/ESP8266 | Introduction: https://github.com/sleemanj/ESP8266_Simple | youtube tutorial: https://www.youtube.com/watch?v=qU76yWHeQuw

ESP8266 CP2102 NodeMCU LUA ESP-12E WIFI Serial Wireless Module | Built-in Micro-USB, with flash and reset switches, easy to program | Full I/O port and Wireless 802.11 supported, direct download no need to reset | Arduino compatible, works great with the latest Arduino IDE/Mongoose IoT/Micropython | Data download access to the website: http://www.nodemcu.com

1. Single module can drive an 8 * 8 dot matrix common cathode | 2. Module Operating voltage: 5V | 3. Module dimensions: length 3.2 cm X 3.2 cm wide X 1.5 cm high | 4. Holes with four screws, diameter 3mm | 5. Modules with input and output interfaces, support for cascading multiple modules

NANO IO Shield for Arduino

Using Atmel Atmega328P-AU MCU, Support ISP download,using the same chips ATmega328P and CH340 with the official version. | Support USB download and Power. | Support for external 5V~12V DC power supply, Support power supply by 9V battery. | Nano V3.0 ATMEGA328P improved version with 3pcs pin headers. No welding needed.

ATmega32U4 running at 5V/16MHz | Supported by Arduino IDE v1.0.1 | On-Board Micro-USB connector for programming | 4 x 10-bit ADC pins, 12 x Digital I/Os | Rx and Tx Hardware Serial Connections

Pro Mini Atmega328 3.3V 8Mhz | It has been programmed for its bootloader, without the user to buy ISP burner for programming, user-friendly. | This board connects directly to the FTDI Basic Breakout board and supports auto-reset. | Low-voltage board needs no interfacing circuitry to popular 3.3V devices and modules (GPS, accelerometers, sensors, etc)

Main chip: Atmel Atmega328P-AU | Fully compatible to Arduino Boards | Support Serial Download, 5V/16M | Support external power supply 3.8-12V DC | 3 Pin headers included

SN65HVD230 can be used under high interference environment. | The device has the ability to send and receive good at different rates. | Fully compatible with ISO11898 standard. | High input impedance, allowing 120 nodes | Low current standby mode, the typical current of 370μA

HiLetgo 4pcs NRF24L01+ Wireless Transceiver Module | Multi-frequency: 125 frequency points | Low operating voltage : 1.9 ~ 3.6V low voltage operation

Easy to use, nice range (using antenna on both), you can send strings (text) from one point to another. If you want to automate your house without pulling cables then this device will help you well | Wireless Transmitter Modules allow your Arduino to wirelessly comunicate with other arduinos, or with radio frequency (RF) controlled devices that operate in the same frequency (433Mhz in this case) | They work in pairs, meaning you need both a receiver and a transmitter to comunicate with each other | Compatible with SparkFun’s 434MHz RF transmitter and RF receiver | This Radio Transmitter & Receiver pair is perfectly matched to allow you to control items from a distance up to 500 feet wirelessly!

Connector 1:SMA Female straight | Connector 2:IPX/U.FL Connector | Impendence :50 ohm | Cable Length: 6 inch (15cm)

The module (MicroSD Card Adapter) is a Micro SD card reader module for reading and writing through the file system and the SPI interface driver. | SCM system can be completed within a file MicroSD card .Support Micro SD Card, Micro SDHC card (high speed card). | 3.3V regulator circuit: LDO regulator output 3.3V for level conversion chip, Micro SD card supply. | Level conversion circuit: Micro SD card to signal the direction of converts 3.3V, MicroSD card interface to control the direction of the MISO signal is also converted to 3.3V, general AVR microcontroller systems can read the signal. | Positioning holes: 4 M2 screws positioning holes with a diameter of 2.2mm, so the module is easy to install positioning, to achieve inter-module combination.

Mini NodeMcu based on ESP-8266EX | Mini WIFI Development Board,4M bytes. | Support OTA on line | Arduino ompatibility. Using the Arduino IDE for programming | 5V 1A switching power supply (switching power supply）onboard

14 I/O Pin (servo type with GND, power and signal) | 8 analog Pin with power output and GND | 6 PWM Pin | 1 Servo power input | 5 I2C expansion Pin

HiLetgo MAX3232 RS232 to TTL Converter Module | Operating Voltage: 3.3V~5V | Four Interface: VCC, GND, RXD, TXD | Communication Chip: MAX3232 chip

TTL to RS485 485 to Serial UART Adapter | Compatible with 3.3V and 5.0V power supply. | Has RXD, TXD signal indicator light, monitor send and receive status. | Support multi-machine communication, allowing access at up to 128 devices on the bus | The module can be hot swapped, the signal does not appear dead phenomenon.

Size: 24mm * 12mm * 2mm | White: 5600K | Double sided inserting 5V USB port

Stable and reliable chipset CP2102 | Baud rates: 300 bps to 1.5 Mbps | Connect MCU easily to your computer! | Standard USB type A male and TTL 5pin connector. 5pins for 3.3V, RST, TXD, RXD, GND & 5V | Supports Windows 98SE, 2000, XP, Vista, Window7, Mac OS 9, Mac OS X & Linux 2.40

HiLetgo 6 in One USB to UART Serial Interface Module | This product perfectly supports 3.3V | TTL to 232
TTL to 485

Main Chip: ENC28J60-I/SO | The board 25MHZ crystal | RJ45 connector HR911105A isolation transformer | Power supply 3.3V

Note: This item comes unassembled, soldering of headers is required. Lithium battery is not included. | WIFI LoRa 32 development board with 433/470MHz antenna, It supports Sniffer, Station, softAP and Wi-Fi Direct modes. This product is based on the WIFI Kit 32 added SX1278 chip, that is, LoRa remote modem, 433MHz frequency, about -139dBm high sensitivity, +20 dBm power output

Microprocessor: ESP32-S3FN8 dual-core processor, frequency up to 240 MHz | SX1262 LoRa node chip. | Onboard SH1.25-2 battery interface, integrated lithium battery management system | Onboard 0.96-inch 128*64 dot matrix OLED display | Integrated CP2102 USB to serial port chip, convenient for program downloading, and debugging information printing.

2.4GHz Dual Mode WiFi + Bluetooth Development Board | Ultra-Low power consumption, works perfectly with the Arduino IDE | Support LWIP protocol, Freertos | SupportThree Modes: AP, STA, and AP+STA | ESP32 is a safe, reliable, and scalable to a variety of applications

Chipset: FT232RL, not genuine FTDI chip, Working Voltage: 3.3V/5.5V | RXD/TXD transceiver communication indicator, with 500MA self-restore Fuse | Pin Definition: DTR,RXD,TX,VCC,CTS,GND | Support Win95/98/98se/ME/2000/XP/win7 32bit 64bit /Vsita/, do not Support Win8

Module with a ceramic antenna, superior signal | Save the configuration parameter data EEPROM Down | With data backup battery;With LED signal indicator | Default baud rate: 9600, Interface: RS232 TTL | Compatible with a variety of flight control module

HB100 10.525GHz Microwave Doppler Radar Detector Probe Wireless Sensor | Chip: HB100 | Frequency: 10.525GHz | Voltage: DC 5V¡À0.25V | Size: Length 37mm *width 45mm *height 8mm

The factory setting is slave mode, but you can set this module to master mode so that you might be able to connect to other Bluetooth 2.0 devices.HC-05 Wireless BT Module | HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your Arduino project, and then you can use your android phone to control some gadgets, such as: switch, LED. | Master and S

Works with any USB Bluetooth adapters, running in slave role: Pair with BT dongle. Led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane | Core module uses HC-06, leads from the module interface includes VCC, GND, TXD, RXD, reserve LED status output pin, the microcontroller can be judged by the foot state Bluetooth has connected KEY pin slave invalid. | Small size, low power consumption,high sensitivity for send and receive. Bluetooth version: V2.0+EDR &Operating voltage: 3.3V &Host Interface:UART &Storage Temperature:-40℃~+150℃&Signal coverage: 30ft &Item size: 4.3 * 1.6 * 0.7cm &Item weight: 3g. | The module is mainly used for short-range data wireless transmission,such as Bluetooth wireless data transmission,Industrial remote control, telemetry,Traffic, underground positioning, alarm,Smart home ect. | Industrial serial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc. Computer and peripheral devices.

433Mhz SI4438 1000M HC-12 Replace Bluetooth Antenna | Power supply voltage : 3.3V | Default communication distance: about 1000 meters | Default idle current: 16 ma | Module size: 27.8mm*14.4mm*4mm

This Adapter only supports the 5 cm solid state drive defined by the mSATA interface in the mini pci-e. The mSATA is not equal to the 1.8-inch MICRO SATA. | The mini pci-e interface has three pin definitions. mSATA- is more common on Lenovo and THINPAD machines. SATA MINI PCI-E- is more common in Asus
EPC and some tablets.there is also a PATA definition, which is essentially an IDE interface, more common on Dell MINI 9 and other machines.The three interface definitions look exactly the same and can't be distinguished by the naked eye, so be sure to distinguish the interface definitions of your SSDs! | Solid state drive (not supported by ASUS, the kind used by Lenovo) plus adapter card, the size is the same as your original CE interface mechanical hard disk, solid state drive plus adapter card size: 6.3 * 3.5 * 0.63cm (long *generous). | Connect the Mini PCI-e mSATA SSD to a 1.8" ZIF SSD for easy update of IPOD, PAD or laptop SSD. (Not supported by any Apple device) | Be sure to pay attention to the direction in which the cable is plugged into the connector, as opposed to your original hard drive.

Support NFC RFID reading and writing, P2P communication with peers | Support I2C, SPI and HSU (High Speed UART), easy to change among these modes | On-board level shifter, standard 5V TTL for I2C and UART, 3.3V TTL SPI | Arduino Raspberry Pi compatible, Small Size and easy to embed into your project | RFID reader/writer supports: Mifare 1k, 4k, Ultralight, and DesFire cards, ISO/IEC 14443-4 cards such as CD97BX, CD light, Desfire, P5CN072 (SMX), Innovision Jewel cards such as IRT5001 card, FeliCa cards such as RCS_860 and RCS_854