The Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino. It is assembled with the CH340 Micro-USB to Serial converter chip, instead of using an Atmega16U2 chip.

We have used plenty of these low-cost Arduino boards with CH340 chips, and have found them to work perfectly. The only time the CH340 chip is used is during programming and when using the serial output of the Micro-USB port. During normal operation, this board is identical to the more expensive version without the CH340 chip.

Main changes from the older version:

1. Two rows of holes for the pins (Male and Female). So it can be connected with normal Female Jumpers.
2. Additional 3 rows of the holes for wiring.
3. Changes to the DIP package of ATMEGA328P to flat package.
4. CH340G replace ATmega16U2

How to use:

1. Download the IDE Arduino
Link: http://arduino.cc/en/Main/Software (Copy to open)
2. Download the Micro-USB chip driver
Link: http://www.5v.ru/zip/ch341ser.zip (Copy to open)
3. Plugin UNO development board, the driver will be installed automatically
4. Select the UNO from the die
5. Select the COM port
6. The best choice first, Arduino comes with routine procedures, burn into it.

Package Includes :

1 x Uno R3 CH340G ATmega328p Development Board with Micro-USB
1 x set of male Jumper Header

The STM32 Nucleo board provides an affordable and flexible way for users to try out new concepts and build prototypes with the STM32 microcontroller, choosing from the various combinations of performance, power consumption and features. The Arduino ™Uno V3 connectivity support and the ST morpho headers allow to expand easily the functionality of the STM32 Nucleo open development platform.

with a wide choice of specialized shields. The STM32 Nucleo board does not require any separate probe as it integrates the ST-LINK/V2-1
debugger and programmer. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various
packaged software examples, as well as direct access to the ARM

Note: For more info refer to datasheet in attachment  section.

Features:

1. Small size, easy to use & high performance
2. Advanced Security Features
3. Low voltage, low power consumption
4. Enhanced User Interfaces
5. Best for DIY projects

Packages Includes:

1 x STMICROELECTRONICS Development Board, STM32 Nucleo-64 MCU, Arduino Uno V3 Connectivity, Flexible Power Supply

The DFRduino Nano USB Microcontroller V3.1 (ATMega 328) is a breadboard ready version of the ” Arduino mini” with integrated USB. The “Arduino Nano” has everything that the Diecimila has (electronically) with more analog input pins and an on-board +5V AREF jumper. The “Arduino Nano” automatically senses and switches to the higher power supply, so there is no need for a power select jumper.

The nano’s pin layout works well with the Mini or the Basic Stamp (TX, RX, ATN, GND on one top, power and ground on the other). The DFRobot DFRduino Nano USB Microcontroller V3.1 (ATMega 328) can be powered via the mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.

Features:

1. Easy to use
2. Low power consumption
3. Plug and play device
4. It is  full compatibility with Arduino
5. Compact size

Specifications:

Packages Includes:

1 x DFRduino Nano (Arduino Nano Compatible)

Welcome to the most powerful Feather made to date: The Feather M4 Express. This Feather is powered by our favorite new chip, the ATSAMD51J19 – a 32-bit 120MHz Cortex M4 processor with floating point support, 512KB Flash, 192KB RAM.

The Feather M4 ships with CircuitPython on board. When you plug it in, it will show up as a very small disk drive with main.py on it. Edit main.py with your favorite text editor to build your project using Python, the most popular programming language. No installs, IDE or compiler needed, so you can use it on any computer, even ChromeBooks or computers you can’t install software on. When you’re done, unplug the Feather and your code will go with you.

Want to use it with Arduino instead? The Feather M4 can be used with the Arduino IDE – and it’s bonkers fast when you do. Just follow the Adafruit guide on setting it up with Arduino and it is ready to go!

The Feather M4 Express also has a mini NeoPixel and 2 MB SPI Flash storage. You can use the SPI Flash storage like a very tiny hard drive. When used in CircuitPython, the 2 MB flash acts as storage for all your scripts, libraries and files. When used in Arduino, you can read/write files to it, like a little datalogger or SD card, and then with our helper program, access the files over USB.

• Built in crypto engines with AES (256 bit), true RNG, Pubkey controller
• Tons of GPIO! 21 x GPIO pins with following capabilities:
  • Dual 1 MSPS 12 bit true analog DAC (A0 and A1) – can be used to play 12-bit stereo audio clips
  • Dual 1 MSPS 12 bit ADC (6 analog pins some on ADC1 and some on ADC2)
  • 6 x hardware SERCOM – Native hardware SPI, I2C and Serial all available
  • 16 x PWM outputs – for servos, LEDs, etc
  • I2S input and output
  • 8-bit Parallel capture controller (for camera/video in)
• Built in 100mA lipoly charger with charging status indicator LED
• Pin #13 red LED for general purpose blinking
• Power/enable pin
• 4 mounting holes
• Reset button

Features:

Package Includes:

1 x Adafruit Feather M4 Express

ARPI600 is a Raspberry Pi Expansion Board, it simply adapts the Raspberry Pi GPIO interface to Arduino pinouts making it possible to use your Raspberry Pi with a precious number of Arduino shields and hardware/software resources. The ARPI600 also supports XBee modules, adds up wireless features without having to hassle up with wires.

What’s onboard ARPI600:

1. Arduino connector: for connecting Arduino shields
2. ICSP interface : Arduino ICSP
3. XBee connector: for connecting XBee communication modules
4. Sensor interface: for connecting sensors
5. Raspberry Pi connector: for connecting Raspberry Pi
6. USB TO UART
7. TLC1543: AD converter
8. PCF8563 : RTC
9. CP2102
10. 32.768KHz crystal: for RTC
11. Power indicator
12. XBee state LED
13. XBee and Arduino interface RESET button
14. XBee EasyLink button
15. RTC battery holder: for the CR1220 button battery
16. TLC1543 reference voltage configuration jumper
17. RTC jumper
18. UART jumper
19. Arduino AD selection jumper
    
20. Arduino I2C selection jumper
21. Arduino SPI selection jumper

Useful link:

To explore more about this module, please follow this link .

Features:

1. Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano.
2. Compatible with Arduino UNO, Leonardo, easy to connect with various Arduino shields.
3. XBee connector for connecting various XBee modules.
4. Sensor interface for connecting various sensors.
5. USB TO UART onboard for serial port debugging, also can be configured as an XBee USB adapter.
6. Onboard ADC, 10 bit, 38KSPS, 11 channels (6 channels for Arduino interface, 5 channels for sensors).
7. Onboard RTC.

Package Includes:

1 x ARPI600

1 x USB type A plug to mini-B plug cable

1 x RPi Screws Set

The STM32 Nucleo-64 board provides an affordable and flexible way for users to try out new concepts and build prototypes by choosing from the various combinations of performance and power consumption features, provided by the STM32 microcontroller. For the compatible boards, the external SMPS significantly reduces power consumption in Run mode.The ARDUINO® Uno V3 connectivity support and the ST morpho headers allow the easy expansion of the functionality of the STM32 Nucleo open development platform with a wide choice of specialized shields. The STM32 Nucleo-64 board does not require any separate probe as it integrates the ST-LINK debugger/programmer. The STM32 Nucleo-64 board comes with the STM32 comprehensive free software libraries and examples available with the STM32Cube MCU Package.

Note: For more info refer to datasheet into attachment section.

Features:

1. Small size, easy to use & high performance
2. Advanced Security Features
3. Low voltage, low power consumption
4. Enhanced User Interfaces
5. Best for DIY projects

Packages Includes:

1 x STMICROELECTRONICS Development Board, STM32L476RG MCU, On-Board STLINK/V2-1, Arduino & ST Morpho Connectivity