Cairoduino DIY Kit

Cairoduino is a low-cost, easy-to-build Arduino-compatible development board. Cairoduino has nicely rounded corners and a striking appearance.

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

Cairoduino 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.

Here’s what you’ll find on the Cairoduino circuit board:

• ATmega328P microcontroller, with Arduino bootloader
• Genuine 16 MHz crystal oscillator.
• 5mm red LED connected on D13 pin, ready for blink sketch.
• Auto-reset circuit.
• Reset button.
• On-Off Switch.
• 6-pin header for USB-TTL interface
• voltage regulator allowing you to power the board from any 7V-20V power source.

Here’s what you won’t find on Cairoduino:

• The USB interface chip– again, that’s why you need the FTDI module.
• Advanced power management. Please provide power to Cairoduino 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.

Powering Cairoduino

The ATmega328P microcontroller requires 4.5 – 5.5 V dc when operating at 16 MHz.
Cairoduino can be powered from an FTDI USB-TTL-5V cable or any power source between 7V-20V. you can use a plug-in power supply or even a battery.

Additional resources

An extended introduction to Cairoduino, Detailed assembly instructions, Complete documentation (including assembly instructions and source files) are available here.