Screaming Bread

The Idea

Louisville Mini Maker Faire was an opportunity for LVL1 and 1st Build have a little fun. So, LVL1 decided to play a prank. 1st Build had a display with a refrigerator. The door would open and close during the event. When the door opens, the light goes on. So what if when the door opened a loaf of bread screamed.

The Basics

A loaf of Bread

AdaFruit FX Sound Board

5v Power Supply

CDS sensor

Recorded screams

Wiring

Connect to power supply to the FX Sound Board. In this case, the power supply is set up to plug into a breadboard. So directly connecting the breadboard to FX board is straight forward.

First we located a CDS sensor. It was located in the motion detection sensor with a broken cover window.

Breaking the cover window even more exposed the CDS cell.

Next came removal and placement on a piece of PCB. At first, it was thought that an external pull up resistor was needed to trigger the FX board. But the FX board had internal pull up resistors, so the added resistor to the CDS PCB was not necessary. Two wires were attached and the CDS sensor was ready.

Next, a CDS cell is removed from a night light setup. The cell is wired to a pull up trigger pin on the FX board. The idea is that when light hits the CDS, the resistance drops and the pin reads a ground signal. Speakers are wired next. Add recorded screams in a random setup and all is done for the circuit.

Bread

Next, a loaf of bread is hollowed out. The sensor is moved high in the loaf to detect light.

What Happened

The best laid plans did not work out. Access to the fridge was blocked. No joy.

Now What

Halloween is coming. Maybe another opportunity will arise.