3.3V/8MHz Arduino Pro mini ATMEGA328P

The pin is distribution, but there is no welding.

It's thin (0.8mm)!This is a 3.3V running the 8MHz bootloader (select 'Duemilanove w/ 328' within the software). Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need.

The For Arduino Pro series is meant for users that understand the limitations of system voltage (3.3V), lack of connectors, and USB off board.

We used all SMD components, made it two layer, etc. This board connects directly to the FTDI Basic Breakout board and supports auto-reset. The Pro Mini also works with the FTDI cable but the FTDI cable does not bring out the DTR pin so the auto-reset feature will not work.

Technical parameters:

1. 20 digital input / output ports RX, TX, D2~D13, A0~A5
2. 8 analog input port A0~A7
3. 1 to TTL level serial port RX/TX
4. 6 PWM ports, D3, D5, D6, D9, D10, D11
5. using Atmega328P-AU Atmel microcontroller
6. support for serial download
7. support external 3.8V~12V DC power supply
8. support 12V and the following battery power supply
9. clock frequency 8MHz
10. dimensions: 33.3*18.0 (mm)