learn to solder:
Robot Badge Kit
Cat no.
KM1098
4
STEP 6: BUZZER
Insert the buzzer with the + symbol on its plastic casing or
a label stuck on top to match what is printed on the circuit
board. Solder into the board and trim the legs just above the
solder joint.
STEP 7: 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 8: 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 9: 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.
STEP 10: INSERT IC
Gently insert the 555 IC into the IC socket, making sure the
notch in the IC matches the notch in the IC socket.
Cathode
(-)
Anode
(+)
Fla
t Edge
