Tutorial WALKTHROUGH
(^102) The Official Raspberry Pi Projects Book raspberrypi.org/magpi
MAKE A
A digital Raspberry Pi-powered version of a classic prank
to play on your friends and relatives
n the bad old days before TV and computers,
the most popular form of family entertainment
was the whoopee cushion, a tooty balloon
originally made from a pig’s bladder. The whoopee
cushion would be inflated and hidden under Grandad’s
chair cushion. When he sat down, it would make a loud
I
CARRIE ANNE PHILBIN
Carrie Anne is the Director of Education
at the Raspberry Pi Foundation
and also the author of Adventures
in Raspberry Pi.
raspberrypi.org
Behind the sofa may not
be the best place to hide,
but you’ll need to see your
prank in action
‘PARP!’ noise, causing him to jump into the air and
making his false teeth fly out. It was the best thing
ever. This project brings the whoopee cushion up to
date: there’s no bladder and no need to blow it up.
Thanks to the Raspberry Pi, you can also add whatever
noises you want!
WHOOPI
CUSHION
2× crocodile clips
2× male-to-
female jumper
leads
A speaker
Craft stuff:
paper plates,
cardboard,
aluminium foil,
glue, scissors,
sponge, bulldog
or paper clips,
sticky tape
You’ll
Need
An electrically
powered trump
machine, ready
to prank
This look of discontent
is what every prank
should strive for