learn to solder:
Robot Badge Kit
Cat no.
KM1098
3
Construction:
STEP 1: RESISTORS
A resistor works both ways so it can be inserted into the
circuit board in either direction. To work out which resistor is
which, you can use a multimeter set to resistance Ω, or use
the coloured bands printed on them. See the parts list for
the colour bands for each resistor. The Jaycar catalogue also
has a handy colour code chart on the resistors page.
One at a time, bend the two legs of each 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: MONOLYTHIC CAPACITOR
The supplied monolythic capacitor can be soldered into
the circuit board in either direction. Solder it into the spot
marked C1, and then trim the legs.
Front View
Rear View
STEP 3: 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 just above the
solder joint.
STEP 4: IC SOCKET
Instead of soldering the 8-pin IC directly into the circuit
board, we have supplied an IC socket. Solder the IC socket
into the circuit board, making sure you match the notch in
the socket to match what is printed on the circuit board.
STEP 5: ELECTROLYTIC CAPACITOR
An electrolytic capacitor only works in one direction, so
we need to solder it in the right way. The longer leg on an
electrolytic capacitor is the positive leg and the side with
the white stripe is the negative leg. Insert the capacitor so
that the long leg (+) goes into the hole marked with the +
symbol.
Turn the circuit board over, solder the capacitor’s legs, then
trim them off just above the solder joint.
220Ω
1MΩ
1KΩ
(+)
(-)
100KΩ
