New project: the critter in the terrarium

thanx for the answer!i

thanx for the answer!

i commit the mistake of do not breadboard the audio-in with motor powered on :</p>

anyway no problem. i will hear the enviroment only when bot is still

 

 

FOR THE NEXT BOT:

I was wandering if there a simpler circuit to detect sound level?

in the second video you can

in the second video you can see how to obtain a very thin ir beam

using and offsett drilled plate is better than a tube… because the inner of the tube deflect rays and produce a more smooth output beam