Solar Buzzer Prank

Step 6 Variations and Upgrades

Keeping with the original goals a lot of features were not included in the final project. Several other additions could be made simply.

One idea was to use a strobing led flasher to pulse the buzzer on and off. One could disassemble the flasher, remove the led, and solder the buzzer in its place. If a strobe is not at your dispose, a 555 timer could suffice.

With a resistor, one could hook the solar cell up to a disposable camera modified to strobe. In this fashion instead of buzzing continuously there would be random flashes.

Some sort of low current proximity sensor could be used to turn on the buzzer whenever someone is close.

One could position the buzzer on a branch likely to sway in a breeze. This way the solar cell will produce voltage and drop off at random intervals making the buzzer that much more annoying.

A sign could be placed over the buzzer that says "April Fools".

An array of the buzzers spread throughout a park could be especially annoying to those who pass through the park.

Practically anything that uses a low voltage and low current can be used in conjunction with the solar cells. How you make it annoying or into a prank is up to you!