Transcript CSatLPAssembly

CricketSat LP
Assembly Manual
Mike Fortney
06/26/2006
Index
• CricketSat LP (Low Power) Sensor
Parts Map
• CricketSat LP Sensor Assembly
• Testing
• Troubleshooting
• Contact Info
Parts Map
Print out the Parts Map on the following
page.
Lay components on respective images to aid
in identification during assembly.
CricketSat LP Parts Map
100k Ohm (@ 25C)
R1
Thermistor
2.2M Ohm
Antenna Wires
Notch
R2 Red-Red-Green-Gold
U3
330k Ohm
+
R3 Orange-Orange-Yellow-Gold
-
18k Ohm
SW1
Switch
U2
5V Regulator
R4 Brown-Gray-Orange-Gold
U1
Timer IC
RF
Transmitter
33.2k Ohm
R5 Orange-Orange-Red-Red-Brown
R6 Channel Dependent
33 Ohm
Battery Clip
Printed Circuit Board
+
47uF
-
C1
47uF
C3
Notch
Speaker
C4
R7 Orange-Orange-Black-Gold
680 Ohm
+
R8 Blue-Gray-Brown-Gold
+
47uF
-
U1 Socket
D1 LED
C2
Speaker Jack
J1
0.01uF
C5
0.1uF
C6
0.1uF
C7
0.1uF
White Band
+
-
+
-
D2 Diode
D3 Diode
+
CricketSat Assembly (1 of 16)
 Install resistors R2, R3, and R4. Solder and clip leads.
 Resistors are not polarized, 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)
CricketSat Assembly (2 of 16)
 Install resistors R5, and R6. Solder and clip leads.
 Resistors are not polarized, orientation not important
 R5, 33.2k Ohm (orange-orange-red-red-brown)
 R6, Resistor value dependent on channel number. It will be the
remaining blue resistor in your kit.
CricketSat Assembly (3 of 16)
 Install resistors R7, and R8. Solder and clip leads.
 Resistors are not polarized, orientation not important
 R7, 33 Ohm (orange-orange-black-gold)
 R8, 680 Ohm (blue-gray-brown-gold)
CricketSat Assembly (4 of 16)
White bands to the right.
 Insert diodes D2 and D3 as shown above.
 Diodes are polarized. Install with white bands orientated as shown.
 Solder and clip leads.
 D2 and D3: 1N4001 diodes.
CricketSat Assembly (5 of 16)
 Install capacitors C5, C6, and C7.
 These capacitors are not polarized. Orientation is not important.
 Solder and clip leads.
 C5, C6, and C7: 0.1 micro Farad capacitors (104 marking)
CricketSat Assembly (6 of 16)
Notch
 Install switch and timer IC socket. Solder all pins. No clipping
required.
 Use masking tape to hold switch in place while soldering.
 Make sure that socket pins are in a straight row before inserting
into board. Insert socket with the notch pointing up.
 Socket will snap into place.
 Make sure that all 14 socket pins poke through board before
soldering.
CricketSat Assembly (7 of 16)
 Install D1, the red light emitting diode (LED).
 The LED is polarized. The longer lead is positive (+). Orientation
is marked on the circuit board.
 Insert LED flush to circuit board.
 Solder and clip the leads.
CricketSat Assembly (8 of 16)
White bands towards switch
White band
 Install capacitors C1, C3, and C4 as shown above.
 These electrolytic capacitors are polarized. The side with the white
band is negative. The positive capacitor lead is longer.
 Solder and clip the leads.
 C1, C3, and C4: 47 micro Farad capacitors
CricketSat Assembly (9 of 16)
 The 5-Volt regulator (U2) is
polarized. Orient with the flat
surface as shown above.
 Insert to this height.
Solder and clip the leads.
CricketSat Assembly (10 of 16)
Longer leads for speaker connection
 Install J1 2-pin speaker header as shown, longer leads on topside
of circuit board.
 Use masking tape or rest on table to hold in place while soldering.
 Solder shorter leads. Do not clip.
CricketSat Assembly (11 of 16)
 Install U3 transmitter module as shown, with the metal can facing
the outside of the board.
 Use masking tape or rest on table to hold in place while soldering.
 Solder and clip leads.
CricketSat Assembly (12 of 16)
Solder here
Solder here
 Route 2” of battery
clip wires down through
the inner strain relief
holes as shown.
 Push the bare
ends back up
through the B+ and
B- holes.
 The red lead through
the hole closest to B+
and the black lead
closest to B-.
 Pull the wire,
removing most of
the slack, leaving
small loops.
 Solder wires in
place on the TOP
side of the circuit
board. Clip the
leads.
 Pull on the wires
to remove any
remaining loops.
CricketSat Assembly (13 of 16)
 Insert bare end of
antenna wires into
OUTER holes as shown.
 Route free ends of antenna
wires up through inner strain
relief holes.
 Let circuit board rest
on wires, propped in air
as shown.
 Pull wire until no loop
exists below board.
 Solder and clip leads.
 Bend the remaining loop
as needed to finish task.
 Bend the wires
to a 45 degree for
best performance.
CricketSat Assembly (14 of 16)
 Install capacitor C2 flush
to the circuit board as shown
to the right. Wiggle and push
as necessary.
 Orientation for this
capacitor is not important.
 Solder and clip leads.
 C2: 0.01 micro Farad
capacitor (103F marking).
CricketSat Assembly (15 of 16)
 Install the thermistor, R1
as shown.
 Solder and clip leads.
 R1: 10k Ohm thermistor
at 25degrees C.
CricketSat Assembly (16 of 16)
 Install the TS556 timer IC, U1 as shown.
 Pins are flared outward. May need to slightly bend inward
before inserting into socket.
 Check alignment before pressing into place.
Testing
•
•
•
•
•
•
•
•
•
Slide power switch to “OFF” position.
Attach a 9-Volt battery
Slide power switch to “ON” position.
Wait up to 30 seconds for the LED to turn on briefly.
If the LED does not light, proceed to the next slide,
“Troubleshooting”
Connect a speaker from the receiver kit to the speaker jack
(J1)
You should hear a faint tone periodically. Remove the
speaker to enable the LED and RF transmitter to operate.
Test the unit with a CricketSat receiver. You should be able
to monitor CricketSat sensors several hundred feet away.
The range for balloon flights may exceed one mile.
Troubleshooting
• No sound or lights, no smoke
– Insure that slide switch is working properly
– Check if battery leads are correctly attached to board,
red +, black – Check if D1 and D2 diodes are properly installed, white
band is “-”
– Check if U1, U2 and U3 are installed properly
– Try another battery
• Sound, but no lights
– LED may be installed backwards
• Lights, but no receiver sound
– Turn volume control on receiver to a median setting.
Should hear hissing sound.
Contact Info
• Michael Fortney
– [email protected]
• UVM CricketSat Website
– http://www.uvm.edu/~cricksat