Before you start

Applying Power

This is one of the most important steps in getting the RoMeo up and communicating with your

host controller. You MUST make sure that you apply power to the Power Terminal using the

correct polarity. Reverse polarity will damage the RoMeo.

Power from USB: Plug in the USB cable to the RoMeo controller from a power source (i.e. wall

jack or computer). Your RoMeo should turn on -- if it does, you should notice the LED light up.

Please note that the USB can only supply 500 mA current, which is enough to light up the LED

but insufficient in powering DC motors or servos.

Power from External Power Input: Connect the ground wire (usually the black wire) from

your supply to the screw terminal labeled “GND”, and then connect the positive wire from your

supply to the screw terminal labeled “VIN".

Cautions: Maximum supply voltage cannot exceed the 

voltage mentioned in Specifications.  

Software

RoMeo can be programmed by Arduino IDE 0022 and above version. It can be downloaded at

http://arduino.cc/en/Main/Software, Please select “Arduino UNO” as the hardware.

Romeo Configuration

Servo Power Select Jumper

Since most servos draw more power than a USB power source can supply, a separate power

source is needed to individually power the servo. That separate power source is usually packaged

together with the servo

When you connect the external power to the servo power supply, it will automatically select the

power source: either internal 5V power supply or external power source.

Motor Control Pin Jumper

Applying the Motor Control Pin Jumpers will allocate Pin 5,6,7,8 for motor control.

Removing the jumpers will release the above Pins.