![]() ![]() The programming header is a row of six pins on the side of the board, labeled "BLK", "GND", "VCC", "RXI", "TXO", and "GRN". There are a few things to make you aware of though.įirst, decide how you want to connect the FTDI Basic Breakout to the Pro Mini's programming header. We've left it up to you to solder headers or wires into the open through-holes. ![]() The Arduino Pro Mini doesn't look like much when you first get it it's as bare-bones as can be. Graphical Datasheet for the 3.3V/8MHz Version Graphical Datasheet for the 5V/16Mhz Version The only difference is the voltage and frequency that the board operates at. The pinout listed on both datasheets are the same. More information about pins can be found in our graphical datasheets. That said, don't let the slower speed scare you away from using the Mini 8MHz is still plenty fast, and the Mini will still be capable of controlling almost any project the Arduino Uno can.Ī4 and A5's location may be very important if you plan on using I 2C with the Pro Mini - those are the hardware SDA and SCL pins. We put a slower resonator on the Mini to guarantee safe operation of the ATmega. The Pro Mini 3.3V runs at 8MHz, half the speed of an Arduino Uno. This means that if you've got peripherals that only work at 5V, you might have to do some level shifting before you hook it up to the Pro Mini (or you could go for the 5V variant of the Pro Mini).Īnother major variation from the standard Arduino lies in the speed at which the ATmega328 runs. ![]() Unlike the Arduino Uno, which has both a 5V and 3.3V regulator on board, the Mini only has one regulator. The first glaring hardware difference is the voltage that the Mini operates at: 3.3V. The Mini packs almost as much microprocessor-punch as the regular Arduino, but there are a few major hardware changes you should be aware of before you start adapting your project to the Mini. We provide a warranty for any defects in manufacturing.Comparing the size of a standard Arduino Uno with the (aptly named) Pro Mini. We programme and use all our products in our projects so are able to offer technical support and documentation. The Arduino software (available from is great for programming these. Instructions for loading the bootloader can be found at. You will need to install the bootloader first. Note: Requires an FTDI adapter to program the Pro Mini. Digital I/O Pins: 14 (6 capable as PWN outputs).Microcontroller: ATmega328 running at 16MHz with external resonator (0.5% tolerance).This package comes with comes with 3 strips of male header pins. If you’re supplying unregulated power to the board, be sure to connect to the “RAW” pin and not VCC. There is a voltage regulator on board so it can accept voltage up to 12VDC. It has 12 digital input/output pins (five of them can be used as a PWM output), 8 analog inputs, a 16 MHZ resonator and a reset button. The Pro Mini is functionally identical to the extremely popular and easy-to-use open source Arduino Pro Mini. ![]() It also does not come with the bootloader installed. The Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need. It’s blue! It’s thin! It’s the Deek-Robot Pro Mini! This is a 5V Arduino running the 16MHz bootloader. ![]()
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