Usually, manufacturers will state whether the model is 3.3V. Pinout available on our support forum here. If you are lucky enough, the Arduino Pro Mini you bought is well-labeled on the back of the board. This product is manufactured by Deek-Robot and is derived from the SparkFun(TM) Pro Mini reference design which was released under the Creative commons Attribution-ShareAlike 3.0 licence.ĭigital I/O Pins: 14 (of which 6 provide PWM output)įlash Memory: 32 KB (of which 2 KB used by bootloader) Option A: Remove the voltage regulator of a 3.3V 8MHz Pro Mini board. The internal pullup resistor does not protect. 2: Very bad, the input may not be higher. Please note that we currently sell two versions of this board, a 5V/16MHz version (HCARDU0059) as pictured above, and a 3.3V/8MHz version (HCARDU0081). If the 5V Pro Mini is powered with the battery, there will be a voltage drop of the voltage regulator and the voltages at the pins may not be higher than VCC. The pin layout is compatible with the Arduino Mini. The board comes without pre-mounted headers, allowing the use of various types of connectors or direct soldering of wires. If we want to use the operating voltage of 3.3V, we need to use the. It is preferred by advanced users for greater flexibility and small size. Please note that there are two versions of the board: one that operates at 5V (like most Arduino boards), and one that operates at 3.3V. The connectivity and functionality are the same as other Arduino boards. The Arduino Pro Mini is intended for semi-permanent installation in objects or exhibitions. The Arduino Pro mini is a small Arduino board based on ATmega328P or Microcontroller. The Arduino Pro Mini is like the Arduino Mini (same pin out) but to keep the cost low, we used all SMD. A six pin header can be connected to an FTDI cable to provide USB power and communication to the board. We really wanted to minimize the cost of an Arduino. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. The Arduino Pro Mini is a microcontroller board based on the ATmega328.
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