About Pro Mini Board:
NOTE: The board type of this Pro mini board in the Arduino IDE is Arduino Pro or Pro Mini (5V, 16 MHz) w/ ATmega328.
- It is 100% compatible with the program, expansion shields, IDE of Arduino Pro mini(5V / 16MHz).
- Can be directly programmed with the CH340G USB to TTL adapter module.
- On-board reset button.
- Microcontroller: Atmel ATmega328P.
- Operating Voltage: 4.5 - 5.5V.
- Digital I/O Pins: 14 (of which 6 provide PWM output).
- Analog Input Pins: 6
- Flash Memory: 32 KB of which 2 KB used by bootloader.
- SRAM: 2 KB.
- EEPROM: 1 KB.
- Clock Speed: 16 MHz.

About Mini-UNO Shield Adapter:
This is Arduino Pro Mini to UNO Shield Adapter Board. Red board and the colorful female pin headers make your project more impressive.
- Dedicated to the Arduino Pro Mini board and other compatible board
- More convenient to connect the peripheral module to Pro Mini board
- Compatible with the pin definitions Arduino UNO R3
- Onboard 500mA resettable fuse to protect power supply from the USB port and the DC jack at the same time.
- Leads out more GND, 5V pins, UART serial interface and I2C interface, so it is more convenient to connect it to peripheral modules without additional IO expansion shield.
- Onboard 5V and 3.3V voltage regulator circuit
- Onboard DC jack socket and it can be powered by an external battery so it allows you to show your projects in the outdoor without the PC.
- Working voltage: 5V
- Working current: 500mA (Max)
- External input voltage: 7-12VDC

About CH340G programmer:
This is USB to serial module that is based on the CH340G. It comes with a beautiful case which is dust-proof, anti-static, ruggedness and it has a longer service life.
It is commonly used to debug various TTL serial devices such as serial WIFI, serial MP3 and serial camera module, upgrade the firmware of routers, and burn program onto Arduino Pro Mini, LilyPad Arduino directly.
Features:
- Operating Voltage: 5V.
- Logic Voltage: 5V.
- Pins: GND(black), 5V(red), TX(yellow), RX(white), DTR(blue)
- Serial baud rate: Up to 115200bps.
- Support USB1.1, USB2.0, USB3.0.
- USB to serial chip (CH340) supports XP, win7 / win8 32bits, 64bits, Linux，MAC