Hi there, have this Meduino Pro Mini, an Arduino clone that misses the usb port in favour of an FTDI port , an I2C bus, and all normal pins you could expect and find on any small-duino. This one lefts apart the usb port: actually an onboard USB port (and relative adapter like Arduino Uno) should be used ideally just once, in order to upload the code, or in rare other occasions like interfacing it with a Raspberry pi without using the gpio bus, and similar occasions. This said, let’s look closer this board and please, forgive my soldering skills while you look at the image.
As you can see from the image below, it has all desired pins and more, a main switch that can make it work at 3.3 or 5 volts.
This is an advantage in terms of power-critical situation, for example, solar panel driven weather station, which would probably suffer for lack of current nightime, so, this way, using such a device, you can power it with a single li-ion or li-poli cell 3,3 – 3,7 so you will rarely go out of current. Under my point of view this is its main feature, together with the FTDI port. Not to mention the comfortable I2C male bus that it’s perfect to be joined with your sensors array and communication devices like the bluetooth module (very cheap indeed) that it’s sufficient to send the weather conditions to the inside pc or any other device that is able to read & store data which come from the meduino.
And, yes, yhis can be used in order to run a multicopter with multiwii code. We will go through this too as soon as my new sensor boards from multiwii.org arrive.
If you want to know more or if you know more, leave a comment.