Difference between revisions of "Screaming Bread"
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[[File:SBP_Screaming_Fritz.jpg]] | [[File:SBP_Screaming_Fritz.jpg]] | ||
| − | + | == Power == | |
| − | First we located a CDS | + | A 5/3.3 volt power supply is located. |
| + | |||
| + | Show picture | ||
| + | |||
| + | The power supply will use a 9 volt battery. A barrel connector compatible with the power supply board is added to a 9v battery connector. | ||
| + | |||
| + | Show picture | ||
| + | |||
| + | == Light Trigger == | ||
| + | |||
| + | First, we located a CDS cell. One was found in a motion detection sensor with a broken cover window. | ||
[[File:SBP_Motion_Sensor_1.jpg]] | [[File:SBP_Motion_Sensor_1.jpg]] | ||
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[[File:SBP_Motion_Sensor_2.jpg]] | [[File:SBP_Motion_Sensor_2.jpg]] | ||
| − | 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 | + | 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 was not necessary. Two wires were attached and the CDS sensor was ready. | ||
[[File:SBP_CDS_Sensor.jpg]] | [[File:SBP_CDS_Sensor.jpg]] | ||
| + | == Putting It All Together == | ||
| + | |||
| + | 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. | ||
| + | |||
| + | 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 = | = Bread = | ||
Revision as of 21:05, 23 September 2015
Contents
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
Power
A 5/3.3 volt power supply is located.
Show picture
The power supply will use a 9 volt battery. A barrel connector compatible with the power supply board is added to a 9v battery connector.
Show picture
Light Trigger
First, we located a CDS cell. One was found in a 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 was not necessary. Two wires were attached and the CDS sensor was ready.
Putting It All Together
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.
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.
