UNO Board CH340 micro USB clone

It has an ATMega32U4 chip running at 16Mhz with a factory-loaded bootloader. It does not include pins so we can solder only the pins we need. Characteristic: - Microcontroller: ATmega32U4
- Operation: 5V
- Power (max): 5-12V
- Total I / O pins: 20
- PWM pins: 5
- Analog pins: 12
- Maximum current of I / O pins: 40 mA
- Maximum current of pin 3.3V: 50 mA
- Flash memory: 32 KB (4 KB used by the bootloader)
- SRAM: 2.5 KB
- EEPROM: 1 KB
- Speed: 16 MHz
- external interrupt
- TWI / I2C, UART, SPI interfaces
- Dimensions: 18x33mm
- Weight: 30 grams

Version compatible with Arduino Mega2560 R3
It has an Atmega2560 chip running at 16Mhz with a factory-loaded bootloader
With 54 digital input / output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UART (hardware serial ports)
The board includes a USB connector, an ICSP port , a reset button and some status LEDs
Arduino compatible Mega2560 R3 CH340 board features:

- Operating voltage: 5V
- Input voltage (recommended): 7-12V
- Digital I / O Pins: 54 (14 PWM outputs)
- Analog input pins 16
- DC current per I / O Pin 40 mA
- DC Current per Pin 3.3V 50 mA
- Flash: 256 KB of which 8 KB are used by the bootloader
- SRAM: 8 KB
- EEPROM: 4 KB - Clock speed 16 MHz

It has an Atmega328P chip running at 16Mhz with a factory loaded bootloader.
The Uno R3 module has all connectors than the Arduino Uno R3 and is compatible with all Arduino shields.
Plate UNO R3 CH340 + Arduino compatible switches features:

- ATmega328P chip at 16MHz with crystal external quartz
- ATmega328P microprocessor with socket
- Operating voltage: 5V
- Input voltage (recommended): 7-12V
- Input voltage (limits): 6- 20V
- Clock speed: 16 MHz
- Digital I / O Pins: 14
- Analog input pins: 6
- DC current per I / O Pin: 40 mA
- DC Current per Pin 3.3V: 50 mA
- Flash32 KB of which 0.5 KB are used by the bootloader -Atmega328
- SRAM 2 KB - Atmega328

Arduino Mega2560 dimensional motherboard to build a Mega by yourself

The STM32F103C8T6 has characteristics that surpass the traditional Arduinos type Atmel
We go from a speed of execution 16 MHz to 72 MHz and 8-bit to 32-bit. The module is supplied in a soldered version.

Set of Pro Mini Atmega328 5V 16M + USB-UART Adapter CP2102 for Arduino 

Pro mni has an Atmega328P chip running at 16Mhz with a factory-loaded bootloader. It does not include pins so we can solder only the pins we need. 

Ideal for connecting TTL RS232 devices to your PC through the USB port. 

- Bootloader Pin Header Compatible 100% ARDUINO
- Pro Mini Atmega328P 5v 16Mhz
- Miniaturized compatible version of Arduino Pro Mini
- It has an Atmega328P chip running at 16Mhz with a factory-loaded bootloader. It does not include pins so we can only solder the pins that we need
Characteristic:
- ATmega328P 16MHz chip with external quartz crystal
- Auto-reset - micro switch
- Integrated 5V regulator
- FLASH 32kB memory
- SRAM 1kB memory
- EEPROM 1Kb memory
- Analog input A0-A7
- 8 PWM channels
- External interruption
- TWI / I2C, UART, SPI interfaces
- Power and status LEDs
- Dimensions: 18x33mm
- Weight: 30 grams
Useful links for Arduino />

  - It has an Atmega328P chip running at 16Mhz with factory-loaded bootloader
- The Uno R3 module has all the Arduino Uno R3 connectors and is compatible with all Arduino shields   Characteristic:   - ATmega328P 16MHz chip with external quartz crystal
- Microprocessor: ATMega328P
- Operating voltage: 5V
- Input voltage (recommended): 7-12V
- Input voltage (limits): 6-20V
- Clock speed: 16 MHz
- Digital I / O pins: 14 (6 with PWM)
- Analog input pins: 6
- DC current for Pin I / O: 20 mA
- Flash32 KB of which 0.5 KB are used by the bootloader - AtMega328P
- SRAM 2 KB - AtMega328P
- EEPROM 1 KB - AtMega328P
- Communication: micro USB female 

It has an Atmel SAM3X8E ARM Cortex-M3 chip running at 84Mhz with a factory-loaded bootloader with 54 digital input / output (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UART (hardware serial ports).
The board includes a USB connector, a SPI port, a reset button, a button erase and some status LEDs.
Atmega16U2 programmed as a USB / Serial converter for power, simply connect it to a computer with a USB cable or power with a power adapter and DC connector.
Characteristic:
Operating voltage: 3.3V
Input voltage (recommended): 7-12V
Digital I / O Pins: 54 (12 PWM outputs)
Analog input 12 pins
2 x DAC
2 x TWI
4x UART
DC current per DIGITAL I / O pin 130 mA
Flash: 512 KB

It has an Atmega2560 chip running at 16Mhz with a factory loaded bootloader with 54 digital input / output pins (from which 14 can be used as PWM outputs) and 16 analog inputs, 4 UART (hardware serial ports). The board includes a USB connector, an ICSP port, a reset button and some status LEDs. Atmega16U2 programmed as a USB-to-serial converter. Simply connect it to a computer with a USB cable or power with a power adapter and DC connector.