(art)scienceblr:Making a toy

The task at hand was to make a toy using the electronics knowledge gathered in the class till now. I brainstormed a little and came up with 4 ideas from which I could choose. The first that I thought of was to make a toy car using a motor. I also thought of making a character whose hands (joints) would move, also using a motor. The third idea consisted of a monster head which would have LED’s as horns, which would double blink, something that I saw on a breadboard experiment online using a 555 IC chip. And the fourth thing that I thought of was using the body resistance to complete a circuit with transistor, so on touch the toy would do something. I finally made something which was an amalgamation of certain ideas initially thought of. I thought of making a robot with wheels for legs. And it would have eyes that would glow as it becomes darker, I planned on using LDR for the same and a motor circuit for the wheels to function. Before making the final toy, I tried out my circuits on the breadboard, where it functioned well separately. I wasn’t able to club the two circuits, of the LED’s and the motor. Later I decided to just keep separate circuits. When I did actually solder these two on a PCB the one where I used LDR didn’t work. I desoldered it and tried soldering it again, it still didn’t function accordingly, so for then I just decided to have continuously glowing eyes.