Description: It’s blue! It’s thin! It’s the Arduino Pro Mini! SparkFun’s minimal design approach to Arduino. This is a 3.3V Arduino running the 8MHz bootloader. Arduino Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need. We recommend first time Arduino users start with the Uno R3. It’s a great board that will get you up and running quickly. The Arduino Pro series is meant for users that understand the limitations of system voltage (3.3V), lack of connectors, and USB off board.
We really wanted to minimize the cost of an Arduino. In order to accomplish this 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 Arduino 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. There is a voltage regulator on board so it can accept voltage up to 12VDC. If you’re supplying unregulated power to the board, be sure to connect to the “RAW” pin on not VCC.
The latest and greatest version of this board breaks out the ADC6 and ADC7 pins as well as adds footprints for optional I2C pull-up resistors! We also took the opportunity to slap it with the OSHW logo.
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Dimensions: 0.7x1.3" (18x33mm)
Based on 17 ratings:
2 of 2 found this helpful:
With the possible exception of it’s 5V sibling, this is my favorite Arduino board. It’s small, it’s inexpensive, and it does everything one would expect of an Arduino.
1 of 1 found this helpful:
Really great product. Reasonable cost, documentation sufficient, and great compatibility with Arduino family. Low power consumption, too less than 10ma - that along with the small size and easy hook-up (flexible use of header pins if desired) makes this my go-to Arduino platform.
1 of 2 found this helpful:
Some of our local amateur radio folks (aka Hams) are supporting a climate change class taught at Williams College. Last year the class launched a balloon that reached 30K feet and we received telemetry data from the balloon. This year we plan to design a more capable payload for the balloon. The light weight, low cost, low power requirements, and availability of software make this product a great choice for generating telemetry data.
I’ve been using the Pro Mini boards since they were first introduced and they’re just the ticket if you need a super small Arduino board for your project. I like to keep a few of both 3.3V and 5V versions on my bench as they’re my go to board for quickly prototyping circuits.
these are awesome little development boards. Highly recommend the FTDI breakout programmer, makes life very easy. This board is very thin, compact, and has plenty of IO options. Easy to solder.
Useful as low-cost and already-wired processor in testing data communication (RS232) programming with a PC serial port by assembly-language and by the Arduino IDE
I built my wife a birthday card using this board and some red LEDs. The Pro Mini is the perfect size to hide in a piece of cardboard along with all the wiring and a coin battery. She loved the card.. I constantly look for opportunities to use one of these little guys.. Great product!
If you need to integrate a small ready-to-use arduino/ATmega in your project this is a pretty great little board. this is made to be as small as portable as possible. Even the PCB itself is thinner then usual.
Of course it’s awesome, it’s from Sparkfun.
is there anything better than this tiny, easy to use computer?
This low-voltage arduino can fit every tiny, cableless proyect you can imagine!
I’m currently hacking a PS2 remote controller, in order to use it to drive a RC DIY quadcopter. I emptied the controller, because I found the electronic inside very ugly, and wanted to make all the logic of the controller on my own. I like using Atmel microcontrolers, but I don’t have the skills to solder CMS ones: indeed, any DIP-24 package don’t fit in the controller. Then, the Pro Mini was the perfect board: it’s tiny enough to fit in, and there’s no need to CMS solder.
I’m using this as an ADC to convert an analog pot into a digital value which is then input into a Raspberry Pi. I had a 9V battery in my project case, so I tried powering this board up using the 9V line on the RAW pin. The product description for this board says the max voltage on RAW is 12V (and the schematic says 16V), but as soon as I connected 9V to RAW, there was a loud “POP” and the bitter taste of disappointment (and melted plastic) in the air. Happily, it was only the regulator IC which blew, and I’m able to power and use the rest of the board using the 3.3V pin on the Raspberry Pi driving the Vcc line on the FTDI header.
Another great SparkFun product, but I still wonder what happened with the voltage regulator. Anyone had a similar experience?
So removing the solder blob allows you to run the board off a 3.7V lipo. from full charge(4.2V) to discharge (~3.2V) the microcontroller runs its 8MHz quite happily with no complaints. Does really well in deep sleep modes as well.
I really like this and the 5V version. For many projects I prefer them to the UNO. My only beef and the reason for the loss of a star is the fact that pins A4 and A5 are not on the outside of the board and worse, they are offset. So for I2C you have to run wire or build your own board. Not the worst thing ever, but for a tiny bit bigger of a footprint, I personally would have preferred those pins on the outside.
Works exactly like it should so 5 stars.