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Franzino is a low cost Arduino standalone board

Hardware components:
Atmel ATmega328P
160 20
16 MHz Crystal
Kemet c315c220k1g5ta image
Capacitor 22 pF
Kemet c320c104k5r5ta image
Capacitor 100 nF
09590 01
LED (generic)
Stmicroelectronics l7805cv image
Linear Regulator (7805)
Panasonic eca1hm2r2
Capacitor 10 µF
Fairchild semiconductor 1n4004. image
1N4007 – High Voltage, High Current Rated Diode
Mfr 25frf52 10k sml
Resistor 10k ohm
Mfr 25frf52 1k sml
Resistor 1k ohm
Omron b3f 1000 image 75px
SparkFun Pushbutton switch 12mm
Software apps and online services:
Ide web
Arduino Arduino IDE
Hand tools and fabrication machines:
09507 01
Soldering iron (generic)


Franzino is a low cost Arduino standalone board. As its name suggests, is a simple board that has just the basic components so you can use the ATmega328P microcontroller, both for study and for applications in projects.Franzino is a low cost Arduino standalone board

Unlike standalones available in the market, the Franzino board has pinout Arduino Rev 3 and connector for easy connection of the serial interface. The ease of access to the pins of the serial interface, enables you to connect communication modules according to the needs of the project. You will be able to easily connect serial level converters such as USB, RS232, RS485 and even a Bluetooth module, without the need to use shields.

The Franzino board comes with the Arduino UNO bootloader to facilitating the upload process of your scketch. You can easily upload your sketch to Franzino board using a USB to Serial converter, following the same steps that are already used to your Arduino UNO board.


-Arduino UNO R3 pinout;

-ATmega328P Microcontroller;

-Power: 7.5 V to 20 V DC;

-Protection against reverse polarity of the supply;

-Connector for serial interface connection;

-Power on LED;

-LED connected to pin 13 for general porpouse;


Unfortunately, with the simplified circuit and with a sigle face layout, the Franzino have some limitations in relation to the Arduino UNO:Schematic Franzino is a low cost Arduino standalone board


  • There is no 3.3 V regulator, so the 3.3 V pin is not connected;
  • The Vin pin is not connected to the power;
  • The SCL and SDA pins are not connected to pins A4 and A5;
  • USB / Serial converter on board – Need a USB / Serial converter to upload the sketches.


Franzino was developed in Eagle CAD and published under license CC BY-SA 4.0.

For more detail: Franzino is a low cost Arduino standalone board

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