Transcript Transmitter Construction

CricketSat LP (Transmitter)
Assembly Instructions
• This is the instruction
slides for the
assembly of a
transmitter board.
• This is the board that
will fly on the balloon.
• It would be a good
idea to review
soldering instructions
before beginning.
Transmitter Parts List
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R2, 2.2M Ohm (red, red, green, gold)
R3, 330k Ohm (orange, orange, yellow, gold)
R4, 18k Ohm (brown, gray, orange, gold)
R5, 33.2k Ohm (orange, orange, red, red, brown)
R6, value depends on channel number. It will be the last blue resistor in your kit.
R7, 33 Ohm (orange, orange, black, gold)
R8, 680 Ohm (blue, gray, brown, gold)
D2 and D3 Diodes, both are the same
C5, C6, and C7 capacitors, all three are 0.1 micro Farad
Switch
14 pin Timer IC Socket
Red LED
C1, C3, and C4, capacitors, are all 47 micro Farad
5 volt Regulator
2-pin Speaker Pins
Transmitter Module
9 volt Battery Clip Wire
6.25 inch Antenna Wires (2)
C2, 0.01 micro Farad capacitor
R1, Thermistor
556 IC Timer
Transmitter PC Board
Step 1 of 16
• Install resistors R2, R3, &
R4. Solder and clip
leads.
• Resistors are not
polarized so orientation is
not important.
• R2, 2.2M Ohm (red, red,
green, gold)
• R3, 330k Ohm (orange,
orange, yellow, gold)
• R4, 18k Ohm (brown,
gray, orange, gold)
Step 2 of 16
• Install resistors R 5 & R6.
Solder and clip leads.
• Resistors are not
polarized so orientation is
not important.
• R5, 33.2k Ohm (orange,
orange, red, red, brown)
• R6, value depends on
channel number. It will be
the last blue resistor in
your kit.
Step 3 of 16
• Install resistors R7 & R8.
Solder and clip leads.
• Resistors are not
polarized so orientation is
not important.
• R7, 33 Ohm (orange,
orange, black, gold)
• R8, 680 Ohm (blue, gray,
brown, gold)
Step 4 of 16
• Insert diodes D2 &
D3.
• Diodes are polarized.
Install with white
bands oriented as
shown.
• Look at the PC board
to see the direction of
the white band.
• Solder and clip leads.
Step 5 of 16
• Install capacitors C5,
C6, & C7.
• These capacitors are
not polarized.
Orientation is not
important.
• Solder and clip leads.
• All three are 0.1 micro
Farad.
Step 6 of 16
• Install switch and IC timer
socket.
• Insert all 14 pins of the
socket, notch is pointing
up.
• Make sure all pins on the
socket & switch go
through the board before
soldering.
• Socket will snap in to
place.
• Do not clip wires.
Notch
Step 7 of 16
• Install red LED in D1.
• The LED is polarized,
the long lead wire is
positive. Look at the
PC board for correct
alignment.
• Install flush to board.
• Solder and clip leads.
Step 8 of 16
• Install capacitors C1, C3,
& C4.
• The capacitors are
polarized. The side with
the white band is
negative. The positive
lead is longer. Look at
the board for +/- signs.
• Solder and clip leads.
• C1, C3, and C4,
capacitors, are all 47
micro Farad
White band
Step 9 of 16
• Install the 5 volt regulator
into U2.
• The regulator is polarized
and should be installed
with the flat side facing
away from the switch.
• Do not push flat to the
board, allow the regulator
to stand up on the board.
• Solder and clip leads.
Step 10 of 16
• Install 2 pin speaker jack.
• Insert with longer leads
on top of the PC board
and solder shorter leads
on bottom of board.
• Do not clip leads.
• This step is optional since
it is only needed if you
plan to connect a speaker
for testing purposes. The
board will work without it.
Step 11 of 16
• Install transmitter
module in U3 with the
metal can facing the
outside.
• Solder and clip leads.
Step 12 of 16
• Push 2” of battery clip wires
down through the inner strain
relief holes.
• The red lead goes through the
hole near the B+ hole and the
black lead goes through the
inner hole near the B- hole.
• Push the bare ends of the
wires back up and through the
B+ & B- holes.
• Leave small loops and solder
the bare ends on top of the PC
board.
• Pull the wires tight to remove
the loops.
Step 13 of 16
• Insert bare end of two
antenna wires into outer
holes from under side.
• Solder on top of the PC
board.
• Push free ends of wires
up through inner holes
and pull tight.
• Bend the wires to form 90
degrees for best results.
Step14 of 16
• Install capacitor C2 flush
to the PC board.
• This capacitor is not
polarized, so orientation
is not important.
• Insert in outer holes,
leaving the inner holes
unused.
• Solder and clip leads.
• C2, 0.01 micro Farad
capacitor
Step 15 of 16
• Install thermistor, R1.
• Solder and clip leads.
• The thermistor is not
polarized, orientation
is not important.
Step 16 of 16
• Install the 556 timer chip.
• The pins are flared out,
so you may need to bend
them slightly inward.
Make sure all pins enter
properly into the socket.
It should sit flush.
• Make sure the notch is
facing up with the notch
in the socket.
Notch
Testing
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Slide the power switch to off.
Attach a 9 volt battery.
Slide power to on.
Wait 30 secs for LED to blink.
Connect a speaker from the
receiver kit to the speaker
jacks. (optional if you have a
receiver that you can use to
hear the signal with).
• You should hear a faint tone
once every 20 – 30 secs.
• Remove the speaker. The
speaker is not flown with the
transmitter!
• Calibrate before flying.