How to Make a Mini Solar Robot!





Introduction: How to Make a Mini Solar Robot!

About: I'm a student of mechanical engineering at Aalborg university in Denmark. I absolutely love to tinker with electronics and mechanics, and thus much of my spare time is spent on hobby robotics and 3D printers...

The parts you need are:
3 Capacitors (from 470uF to 4700uF, each),
a 2N3904 transistor,
a 2N3906 transistor,
a resistor(1k to 10k ohm),
a solar cell (minimum 3 volts )(i used two 2 volt cells in series),
a pager motor(or a vibrator).
you'll also need a blinking/flashing LED (FLED ).

to help you, i have made a, very easy to follow , schematic of the circuit, which can be found on



  • Oil Contest

    Oil Contest
  • Clocks Contest

    Clocks Contest
  • Water Contest

    Water Contest

10 Discussions

i build one but i didin't work, the fled is flashing but motor dont turn, when i disconnect the resistor the motor turns then i put it back and away and the motor turns again

could you help me??!!


is the led a rerulaer led or is it the flashing type? or by flashing led do u mean it flashes ? geat vid i whant one! :D

2 replies

 Great 'ible. Very clear instructions, and video was well edited an to the point. Keep it up!

1 reply