DFRobot 4WD Platform/Romeo/SD Card and Servos

So I have a couple questions I wanted to put out to see if anyone can chime in.

I am going to build a bot using the 4WD platform with the Romeo. I noticed in another thread that it was said it had the capability to handle the motors of the platform and I understand where to connect them. However while looking at the documentation I noticed that it had a separate servo power input, but looking at the board I am missing where I would connect servo’s too. I will have two servo’s from a Dagu mini pan tilt to connect.

Also, I wanted to use the breakout DF Robot SDCard Adapter as data storage. The idea being it will remember items like where it started, where it moved too, sensor info etc. With it being an SPI interface could I just hack it into the digital pins on top and program it on there, or is there a better place on the Romeo? I do have a Mega 2560 board which I though about slaving as time went on for my sensors/data/decision making that could feed back to the Romeo.

Look forward to any thoughts or tidbits.

Thanks,

Kevin

That’s great news on both counts. I made sure to order the 4WD kit that came with the encoders for just that purpose. I figured it would be a lot of storage but that just leaves us room to grow. I am looking forward to adding localization sensors and such as we go on, but at least for now I figured it would give us a way to have it collect data that could be easily copied and analyzed.

I will certainly post videos and such after we get the order and start putting things together.

Thanks!

The ROMEO is a great microcontroller and can provide enough current directly from the ATMega328 chip to power servos from the pan/tilt kit directly; you can plug them into the digital pins (ensure correct orientation) and use the servo library. When you add a shield, be sure to know which pins are used so they are not used by other devices. An SD card would provide the ROMEO with a LOT of extra storage. If you want your robot to know where it started, you should add the encoder modules.