learn to solder:
Owl Badge Kit
Cat no.
KM1092
3
Construction:
STEP 1: RESISTORS
A resistor works both ways so it can be inserted into the
circuit board in either direction.
Bend the two legs of the resistor with your hand or long
nose pliers, and then insert the resistor in through the front
of the circuit board. Spread the legs out a little bit so that the
resistor won’t fall out when you turn the circuit board around.
Turn the board around and solder the resistor legs. Make
sure the solder joints look like the “volcano” shape we
described on the previous page. Once you have soldered
both legs, trim them off above each solder joint.
STEP 2: TRANSISTOR
Insert the transistor through the front of the circuit board.
Make sure you insert it the same way as printed on the circuit
board because they only work in one direction.
Turn the board over and solder the three legs. Make sure
you don’t add too much solder that you end up causing the
solder pads to join each other.
Trim the three legs once they are soldered.
STEP 3: LEDS
LEDs only work in one direction. The long leg is positive (+),
and the short leg and side with the flat edge on the LED’s
body is the negative (-) side. Insert both LEDs into the front
side of the circuit board so that the flat edge on the LED
matches what is printed on the circuit board.
Turn the board over and solder the two LEDs. Make sure the
LEDs are sitting flush on the circuit board before you solder
them in. Trim off the legs once you have finished soldering
these in.
STEP 4: BATTERY HOLDER
Insert the battery holder firmly into the rear side of the circuit
board, matching the diagram printed on the circuit board.
Turn the board around and solder the two legs on the front
side of the circuit board.
STEP 5: LAPEL PIN
If you plan to wear this circuit board as a badge on your
clothes, you need to solder on the lapel pin onto the rear
side of the circuit board. You will need to apply enough
solder here to make sure it holds securely to the circuit
board.
220Ω
Cathode
(-)
Anode
(+)
Fla
t Edge
Front View
Rear View
