Well this is just a small mousey bot that can be make quickly from you old computer mouse froM the junk. The small DC motors would give it the speed and it'l almost not his and obstacle but avoid and keep running around on the floor. IR sensors would form the eyes of the bot so that it doesn't his obstacles. It will make a cool bot to show to yopur friends and put them in awe ! ,come lets get it done.
The basic concept is this way:
–>The two motors on the side propels the mouse fast in front
–>When an obstacle is detected in front the signal From IR is stops one of the motor from moving thus turning the bot to one side.
–>So the bot never hits and moves like a real mouse searching its way through.
As you can see in figure A) the two motors on the side propels the bot in front and then once the front IR recieves the presence of obstacle then the one of the motors stops moving thus rotating the bot to one side.The key feature that makes the bot ammusing is the speed at which it moves due to the motor.
There's actually nothing much as mechanical setup. Just stick two motors on eithr side ot the mouse as show in fig A) below. It must be inclined as shown in figure B) which is its front side view.
Circuit Involved :-
–>Citcuit involves just two 7805 regulator and one BC107 transistor.
–>i guess ouy are able to see the circuit involved here.
–>The two motors runs on direct supply from the battery with a 7805 regulator in between.which is to just isolate the supply to the other motor when one motor supply is grounded
–>When the IR sensor detects the obstacle it willl give a 5v signal which drives the Transistor and groud the supply to the motor 2 thus stopping it.
–>While motor 1 is still running the bot turns right.
–>As soon as the IR sensor stops detecting the obstacles it drives the other motor too driving the bot in front.
If you have even a little basics in electronics you can follow this circuit. In case you'l need explanation please leave a comment.
P.S:- The Ir cicuit need to be the one i suggested only to get it working properly. I have given the links on all the words "IR sensor" above. Take a lookj at theat and design the IR sircuit for this bot.
–>For the IR circuit vitis my post about IR sensors. Stessing this because most other IR detectors availabe on the net may not give 5v on signal detection but mine wiil hence stressed it a bit too much.