I call this robot Explorer :) This can decide its own path using SRF05 ultra sound sensor. Its primary path is going forward, but if it finds obstacle within 20cm distance, it checks right and left. By comparing the distance of the obstacles in both right and left (if present) it…

That looks interesting.Could That looks interesting. Could you tell us more about the way you powered all this? I’m not familiar with the Mega: did it have some independant VIn ?

Yes it has Yes it has an independant Vin and supports from 7V to 12V, it has integrated voltage regulator on board and regulates the voltage to 5V. So you can use 9V battries. Or if you want to supply just 5V, you need to use the USB port of the Mega, in that case you have to us…

what I don’t get is if you what I don’t get is if you used: - only one 9V then one connection on Vin for motors and a separate regulator to 5V for the Mega. - 2 separate 9V one on the Vin, the second on the 5V regulator. But don’t worry, that’s just me and my too simple DFRobot…

Thanks for the schema, it Thanks for the schema, it really helps.

can you published your can you published your sketch ?

Done! Please download the zip file! You might need some modifications :slight_smile:

Thank you so much for all Thank you so much for all the shared data. It helps me a lot to understand what I can plan next with my very basic 4WD platform. It looks like you managed the turn in a better way than me. My problem is very common: I can’t just apply reverse orders on …

Yes! Yes it has individual control on each motor, you don’t have build an H-Bridge by yourself. You can use L293D. :slight_smile:

Is that an Plexiglass (acrylic) sheet used for the chassis? Is that a Plexiglass sheet for the chassis? If so, how did you drill bolt/screw holes without cracking it? Good work by the way.

RobotShop Community

Obstacle Detector Ultrasound

Let's Make Robots Robots

salseng December 2, 2013, 12:31pm 5

2 Different sources in 2 different targets

I used a 9V source for the Arduino mega and the other source to power the Motors, I’ve attached a comparable circuit design with it for your convenience

I haven’t shown capacitors, but its good to use capacitors. And to supply power to the motors, I’ve used 2 9V battries in parallel. Please check the design in the top.