Arduino Clone Compatible with Breadboard

Figure 1 

The project is termed as Boarduino since it is an Arduino clone that can talk to the Arduino software when programmed with the Arduino bootloader.

There are two versions of Boarduino which includes a DC version and a USB version. The DC version does not contain an onboard USB chip which requires a USB-TTL cable. The USB version has an onboard USB chip but without a DC jack or 5V regulator.

For a USB boarduino, the device is designed to plug into a breadboard for easy prototyping with a petite size of 75mm x 20mm. it contains standard USB jack with USB or external power that is selectable with a jumper. The ATmega168 runs at 16MHz and a 500mA fuse is used to protect the computer from current overdraw. It also has an auto-reset capability and a standard Reset button.

For a DC boarduino, it utilizes an ATmega328 that runs on 16MHz. it is protected against incorrect wall adapter using a 1N4001 diode. When used with a USB-TTL cable, it has an auto-reset capability. For the circuit to run on 7V-17V DC power due to the standard 2.1mm DC jack with 5V regulator.

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