Diavolino

Diavolino ("little devil") is a low-cost, easy to build Arduino-compatible development board.

It's a low-profile through-hole version, with a simplified design. It's based on a ATmega328P microcontroller, and comes pre-flashed with the Arduino bootloader. Open source design, with bare basics hardware.

Diavolino is sold as an easy to assemble "through hole" soldering kit. Basic electronic soldering skill is required, and you provide the soldering tools: a soldering iron and solder, plus small wire clippers. Assembly time is typically 10-30 minutes, depending on configuration and soldering skill. Suggested soldering kit P/N: 2113228.

To load Arduino sketches onto a Diavolino, you'll need an FTDI cable, P/N: 2117341.

Here's what you'll find on the Diavolino circuit board:

• ATmega328P microcontroller, with Arduino bootloader
• Genuine 16 MHz crystal oscillator (better grade, 20 ppm)
• 3 mm diffused red LED (naturally!), ready for blink sketch
• Auto-reset circuit
• Reset button
• Wire jumper for optional USB power
• 6-pin header for USB-TTL cable
• Places to hook up to a battery box, complete with strain relief
• Locations for optional side socket strips, ICSP connector, and TO-92 regulator

Here's what you won't find on Diavolino:

• The USB interface chip-- again, that's why you need the cable.
• Advanced power management. Please provide power to Diavolino from one source at a time: battery, USB, or plug-in power supply.
• A separate 3.3 V regulator. Shields and accessories that require separate 3.3 V power may need assistance to work correctly.
• While you can solder wires for your I/Os directly to the board, some prefer female headers. You will need two 6-position and two 8-position single row vertical headers. Note: The 6-position header is used for Arduino shields, so it has extended leads. You can snip the leads before or after soldering if you wish. There is also a shield header bundle that includes two each of the 6-position and 8-position extended lead female headers.

Powering Diavolino

The ATmega328P microcontroller requires 4.5 - 5.5 V dc when operating at 16 MHz. The Diavolino can be powered from a FTDI USB-TTL-5V cable, if you hook up the wire jumper that connects that power source to the board's "Vcc" line.

You can also power the board through a 3xAA or 3xAAA battery box, or through a plug-in power supply. For most situations that require wall-plug power, we recommend to use a 5 V power supply directly. If you have a specific reason to use a higher voltage wall wart (e.g., 9 V), then you'll also have to provide a voltage regulator to make the 5 V supply for the microcontroller.



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