Build a communication system for the moon
Learn about how electronic intercom circuits can
help players communicate
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Whether you are a scientist researching a new medicine or
an engineer solving climate change, safety always comes
first. An adult must always be around and supervising when
doing this activity. You are responsible for:
ensuring that any equipment used for this activity is in good
working condition
behaving sensibly and following any safety instructions so
as not to hurt or injure yourself or others
Please note that in the absence of any negligence or other
breach of duty by us, this activity is carried out at your own
risk. It is important to take extra care at the stages marked with
this symbol:
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Sound waves enter the inner ear
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They vibrate the cochlea, a snail shaped organ and the nerve endings
start to work
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These nerve endings create an electrical signal that travels to the
auditory nerve in the brain
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The brain then interprets these signals, and this is how we hear.
Cochlea
Electrical
signal
Sound wave
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Your voice sends sound waves inside the cup,
vibrating the bottom of the cup
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The vibrations are transferred to the string, across
the string into the bottom of the other cup
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The sound waves become vibrations inside the
second cup, transferring the sound of your voice
Sound wave
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Football players on the Moon cannot shout to each other as
they need to wear a space suit as there is no atmosphere
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Also, there is no air for sound waves to travel in
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Therefore, some form of two-way communications system is
needed that does not require an atmosphere i.e. an
electronic intercom or walkie talkie
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Sound waves can be turned into electric signals by using a
loudspeaker and an amplifier
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The amplifier increases the electrical signal that can then
produce a sound output to a second loudspeaker
•
This one-way system is called an intercom.
AMPLIFIER
Loudspeaker 1
Loudspeaker 2
Weak signal
Amplified signal
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Circuit diagram
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Printed Circuit Board
(PCB) Layout
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Printed Circuit Board
(PCB) Layout Mask
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Solder the resistors R1
to R4 to the PCB.
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Solder the capacitors
C1 to C3 the PCB.
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Solder the transistors
ZTX300 and ZTX500
to the PCB. Make sure
they are the correct
way round.
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Solder flying leads to
the loudspeakers LS1
and LS2. Then solder
the leads into the
correct polarity on the
PCB.
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Solder flying leads to
the switch. Then solder
the leads into the
correct polarity on the
PCB.
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Solder flying leads to
the 9V battery clip.
Then solder the leads
into the correct polarity
on the PCB.
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Stripboard may be used for the circuit:
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Stripboard may be used for the circuit:
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Stripboard may be used for the circuit:
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Research what methods may be used to make the intercom
system wireless.
Explore the use of electronic intercom circuits to facilitate communication on the Moon, where traditional audio methods are impractical due to the lack of atmosphere. Learn how sound waves can be converted into electrical signals, amplified, and transmitted via intercom systems for effective player communication.
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Presentation Transcript
Build a communication system for the moon Learn about how electronic intercom circuits can help players communicate
Stay safe Whether you are a scientist researching a new medicine or an engineer solving climate change, safety always comes first. An adult must always be around and supervising when doing this activity. You are responsible for: ensuring that any equipment used for this activity is in good working condition behaving sensibly and following any safety instructions so as not to hurt or injure yourself or others Please note that in the absence of any negligence or other breach of duty by us, this activity is carried out at your own risk. It is important to take extra care at the stages marked with this symbol:
Sound waves and hearing Sound waves enter the inner ear They vibrate the cochlea, a snail shaped organ and the nerve endings start to work These nerve endings create an electrical signal that travels to the auditory nerve in the brain The brain then interprets these signals, and this is how we hear. Sound wave Electrical signal Cochlea
Paper cup telephone Your voice sends sound waves inside the cup, vibrating the bottom of the cup The vibrations are transferred to the string, across the string into the bottom of the other cup The sound waves become vibrations inside the second cup, transferring the sound of your voice Sound wave
Communications on the Moon Football players on the Moon cannot shout to each other as they need to wear a space suit as there is no atmosphere Also, there is no air for sound waves to travel in Therefore, some form of two-way communications system is needed that does not require an atmosphere i.e. an electronic intercom or walkie talkie
Electronic intercom Sound waves can be turned into electric signals by using a loudspeaker and an amplifier The amplifier increases the electrical signal that can then produce a sound output to a second loudspeaker This one-way system is called an intercom. Amplified signal Weak signal AMPLIFIER Loudspeaker 2 Loudspeaker 1
Electronic intercom Circuit diagram
Electronic intercom Printed Circuit Board (PCB) Layout
Electronic intercom Printed Circuit Board (PCB) Layout Mask
Electronic intercom Step 1 Solder the resistors R1 to R4 to the PCB.
Electronic intercom Step 2 Solder the capacitors C1 to C3 the PCB.
Electronic intercom Step 3 Solder the transistors ZTX300 and ZTX500 to the PCB. Make sure they are the correct way round.
Electronic intercom Step 4 Solder flying leads to the loudspeakers LS1 and LS2. Then solder the leads into the correct polarity on the PCB.
Electronic intercom Step 5 Solder flying leads to the switch. Then solder the leads into the correct polarity on the PCB.
Electronic intercom Step 6 Solder flying leads to the 9V battery clip. Then solder the leads into the correct polarity on the PCB.
Electronic intercom Stripboard Stripboard may be used for the circuit:
Electronic intercom Stripboard Stripboard may be used for the circuit:
Electronic intercom Stripboard Stripboard may be used for the circuit:
Extension Research what methods may be used to make the intercom system wireless.
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