Monday, February 27, 2012

Observer 1.4 [update]

Hi there. I am presenting you version 1.4. 

The mayor change is that I’ve added third wheel to the back. I’m still experimenting with that but as you can see in the video observer can now drive over various obstacles without any problems. Also I moved Bluetooth module under the PCB to use the space that was there. Right now I’m drawing new PCB for observer, so that means next update will be version 2.0. I don’t want to spoil it, so I just say there’s going to be multiple sensors and when all will work out well I believe that version 2.0 will be awesome.

Sunday, February 12, 2012

Observer 1.3 [update]

Bluetooth module has arrived, so I want to show you pics of another update. 

Reason that version 1.2 is missing is that this version (controller) was build on breadboard. At first I thought that I would put controller in some case, but then I decided to leave it like this. So what’s new? I’ve added analog stick that I’ve desoldered from old gamepad. But there’s still option to control robot via accelerometer. For that purpose I’ve used pushbutton that is part of analog stick. There’s still one breaked-out analog pin on Observer waiting for some sensor. I’ve been trying to add there LM335, but I’m dealing with analog reference issue. I found out that AAA batteries aren’t very good for such robot and that having separate power sources for servos and for microprocessor would be much better.