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DFR0174 XBee USB Adapter V2 - Atmega8U2
US$33.75

The XBee USB Adapter V2 is an update version from DFRobot. It features an Atmega8U2 programmed as a USB-to-serial converter, the same chip found on the Arduino Uno. The Atmega8U2 firmware uses the standard USB COM drivers, and no external driver is needed. However, on Windows, a .inf file is required. It's compatible with all the products using XBee socket. It provides a faster and stable wireless communication for your projects. The DFRobot Xbee USB adapter is used for the XBee module configuration parameters to facilitate wireless data transmission. It can be easily connected to a PC via USB cable. Furthermore, it can be used with XBee-setting support software X-CTU. It can also be used as a USB-TTL adapter.

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DFR0483 FireBeetle Covers-Gravity I/O Expansion Shield
US$12.25
DFRobot FireBeetle series is the low-power consumption micro-controller intentionally designed for Internet of Things (IoT). The series micro-controllers aims at IoT node of low-power consumption, attending to build the IoT hardware platform quickly and conveniently. There are three types of FireBeetle, containing Boards (main control), Covers (expansion boards) and related Accessories. FireBeetle Covers-Gravity I/O Expansion Shield is an adapter for Gravity sensors and modules. With this shield, you can achieve convenient connection between Gravity sensors and FireBeetles. Every sensor will have its independent power pins.
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MOD-120 Neo-6M UBLOX GPS Module
US$29.68
This is a simple GPS module that has the antenna, adapter, battery and antenna extension port all on one circuit board. Simply connect four wires to get this gps module up and running with your Arduino Microcontroller! You also have the option to power the system and store data into the onboard memory register and access the data when connected to your computer using UBLOX software. Should you need some extended range to catch more satellite, we recommend using our SMA adapter.
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WIFI-ESP32, ESP32-WROOM-32 Wi-Fi + Bluetooth BLE Low Power IOT Microcontroller, 30 pin, usb micro, CP2102
US$13.42
If you're interested in making your project connect to the web and be part of the grander scheme of IOT (Internet of Things) then this board is the gadget for you! Like other microcontrollers and microprocessors, the ESP32 now has built in power regulation circuits, on board antennas and noise filters and fits snuggly onto a breadboard for rapid prototyping. The ESP32 can interface with other MCUs as master or slave or function completely standalone through SPI/SDIO, I2C and UART. The microcontroller can also support an SD card and multiple sensors with its 32 GPIO pins (all of which can be used for PWM).
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2308-ADA 2.4GHz Mini Flexible WiFi Antenna with uFL Connector - 100mm
US$4.38
This 4" / 100mm long flexible uFL 2.4GHz antenna has approx 4DBi gain and a 50Ω impedance so it will work fantastically with just about any 2.4-2.5GHz wireless receiver/transmitter such as the Adafruit CC3000s! Antenna comes with a uFL (a.k.a u.FL / IPX / IPEX) connector, so no more need for additional adapters to get your IoT cloud flying high!
Delivery within 2-3 weeks
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TEL0111 ESP32 WiFi & Bluetooth Dual-Core MCU Module
US$13.00
The ESP32 WiFi and Bluetooth chip is the latest generation of Espressif products. It has a dual-core 32-bit MCU, which integrates WiFi HT40 and Bluetooth/BLE 4.2 technology inside. Compared to the ESP8266 (the previous generation), the ESP32 has a significant performance improvement. It is equipped with a high-performance dual-core Tensilica LX6 MCU. One core handles high speed connection and the other for standalone application development. The dual-core MCU has a 240 MHz frequency and a computing power of 600 DMIPS. In addition, it supports Wi-Fi HT40, Classic Bluetooth/BLE 4.2, and more GPIO resources.
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WIFI-RTL8710 RTL8710 Development Board Micro-Controller
US$19.95
Realtek RTL8710 is a Wi-Fi Module that is great for Internet of Things projects. This IC that is surface mounted on the microcontroller is based on an ARM Cortex-M3 Processor 166MHz. The processor has a 1MB ROM, 512KB RAM and a build in 1MB Flash memory with faster wireless performance compared to the ESP8266. This module uses the FreeRTOS as the go-to operating system and be programmed thanks to the CH340 IC with a Micro USB port. You have access to 17 GPIOs, 3 I2C, 2 PCM, 4 PWM and two high speed and one low speed UART. This board can be programmed with Arduino bootloader and offers wireless connectivity at b/g and n signals.
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WIFI-ESP8266-B ESP8266 Adapter Board
US$3.49
This plain looking board allows users to connect ESP-01 Wi-Fi module to a FTDI chip or breadboard and program with 3.3 or 5vdc logic levels. This board has a ASM1117 IC that allows you to using the FTDI chip at any logic level making it easy for you to power the system and not worry about frying the ESP chip. The ESP8266 is popular and can be found in Sonoff wireless relays or server and can even act like an Arduino with the correct board manager and Arduino code. This adapter board helps to achieve all these functions and not worry about 3.3v logic level signals.
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ANT-15 3DBI Spring Antenna for SIM800L
US$1.39
This is a simple antenna designed for SIM800L GPRS boards, or for any board that requires an antenna to be soldered onto! Specifications: Signal gain: 3DBi. Length: 1.5cm. Width: 0.4cm. Material: Nickel Plating.
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ANT-17 GSM u.FL Connector to SMA Antenna
US$4.89
This product is an extension to the ABRA product WL-340 SIM800L GPRS GSM Breakout Module. The module broadcasts on a 3G network allowing you to send or receive data from this device. This device is the secondary antenna that accompanies the spring antenna. It easily connects to the PCB by a UFL connector.
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WL-70 Wireless Remote with Receiver 315MHz 4 Channel
US$6.99
This practical wireless radio remote can be used for many alternative applications around the house or car. The device has a strong operating power rating and great transmission distance. The four buttons each occupy a 315 Mhz channel and respectively correspond to the four data bits sent to the receiving board (data bit is output high).
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WIFI-SONOFF-R 433MHz Remote Control for SONOFF RF Switch
US$10.70
This remote control looks and feels like any normal car starter, expect this device is designed to work with the SONOFF relay. You can mount the relay to control 110VAC applications at a max of 10Amps. Great for project ideas like an remote control car door opener or anything that run on high AC voltage. This switch can operate for an entire year without needing to replace the battery, varying on usage.
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2633-ADA Adafruit Bluefruit LE SPI Friend - Bluetooth Low Energy (BLE)
US$34.92
The Bluefruit LE SPI Friend makes it easy to add Bluetooth Low Energy connectivity to anything with 4 or 5 GPIO pins. With SPI, you don't have to worry about baud rates, flow control, or giving up a hardware UART port. Connect to your Arduino or other microcontroller using the common four-pin SPI interface (MISO, MOSI, SCK and CS) plus a 5th GPIO pin for interrupts (to let the Arduino know when data or a response is ready).
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3231-ADA Adafruit LoRa Radio FeatherWing - RFM95W 900 MHz
US$34.92
This is the LoRa 9x @ 900 MHz radio version, which can be used for either 868MHz or 915MHz transmission/reception - the exact radio frequency is determined when you load the software since it can be tuned around dynamically. These are +20dBm LoRa packet radios that have a special radio modulation that is not compatible with the RFM69s but can go much much farther. They can easily go 2 Km line of sight using simple wire antennas, or up to 20Km with directional antennas and settings tweakings.
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AM-145 Xbee USB Bluetooth Adapter for Arduino
US$13.78
This device allows users to connect their XBee and interface by using a simple USB Cable. The unit comes with voltage protection and regulation circuits to prevent any damage to the XBee. It also has the FT232 from FTDI to allow easy connection to any Windows/Apple or Linux computers. This device can also be used as a FTDI programmer for Arduino Micro.
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