Step 2: Solder Resistors

1. Find resistors: Go to the resistor bag and sort out resistors R1 to R3.

2. Break out the HB 1 board: Break up the panel into three boards. 

3. Insert the resistors. The actual values are marked on the circuit board. Insert the resistors into the correct locations.

4. Flip the circuit board over. It is easy to solder the low components first. The low resistors will stay in place

5. Solder the resistors. Solder the resistors in place making sure that the board is flat and the components are flush with the board.

6. Trim the resistors. Cut off the excess leads of the resistors with a pair of sidecutters.

Step 3: Solder Pushbuttons

1. Find pushbuttons: Go to the hardware bag and get the two pushbuttons.

2. Insert the pushbuttons. Insert the two pushbuttons into locations labelled S1 and S2.

3. Flip the circuit board over.

4. Solder the pushbuttons. Solder the 8 connections that define the pushbuttons.

Step 4: Solder connector

1. Find connector: Go to the hardware bag and get the large 10 way connector

2. Insert the connector. Insert the connector into position JP2 ensuring that all the pins go through the holes in the printed circuit board.

3. Flip the circuit board over.

4. Solder the connector Solder the 20 pads that define the link connections .

Step 5: Solder 3 way header

1. Find connector: Go to the hardware bag and get the 4, three way header strips.

2. Insert the connectors. Insert the pins into positions J4,J3,J2 and J1. i

3. Flip the circuit board over.

4. Solder the pins Solder the 12 pads that define the link connections .

Step 6: Solder the capacitor

1. Find capacitor Go to the capacitor bag and 1uF, tantalum capacitor. This is identified with a polarisation mark, +, on the bead of the capacitor.

2. Insert the capacitor. Insert the capacitor into the position on the board making sure that the + pin is oriented to the + mark on the circuit board.

3. Flip the circuit board over.

4. Solder the pins Solder the 2 pads

6. Trim the capacitor: Cut off the excess leads of the resistors with a pair of sidecutters. 

Step 7: Solder the buzzer

1. Find buzzer: Go to the hardware bag and find the round black buzzer

2. Insert the buzzer. Insert the buzzer noting that the + mark on the buzzer is to the top of the board.

3. Flip the circuit board over.

4. Solder the pins: Solder the 2 pads 

Step 8: Solder the ldr

1. Find buzzer: Go to the semiconductor  bag and find the light dependent resistor, LDR

2. Insert the LDR. Insert the ldr into poistion marked LDR1

3. Flip the circuit board over.

4. Solder the pins: Solder the 2 pads.

5. Trim the lead. Cut off the excess lead a pair of sidecutters. 

Step 9: Solder the leds

1. Find leds Go to the semiconductor bag and find the four leds - red, yellow, green and a clear/blue infra red emitting led

2. Insert the Leds. Insert the leds into positions marked D4, D3, D2 and D1. The flat on the led body must match the small bar on the printing on the circuit board.

You will also see that one lead on the LED is much longer and this corresponds to the anode of the LED

Note that D1 is inserted and bent over so the LED faces outwards.

3. Flip the circuit board over.

4. Solder the pins: Solder the 8 pads.

6. Trim the leads. Cut off the excess leads with a pair of sidecutters.

Step 10 : Solder the ir sensor

1. Find sensor Go to the semiconductor  bag and find infra red sensor. This is either a black, green or silver semiconductor with three legs.

2. Insert the sensor: Insert the sensor into position labelled S1 on the PCB. Note that there may be two locations. The large square sensor is for a large silver detector with 5 legs. Make sure that you have the correct location for the appropriate sensor otherwise you will damage the receiver.

3. Flip the circuit board over.

4. Solder the pins:

Step 11 : Install links

1. Find links Go to the hardware  bag and find the small black shorting links.

2. Insert the links: Insert the links into jumpers J4, J3, J2 and J1.

Step 12 : Inspection

Flip the board over and examine the soldering. You can remove excess flux from the board with a cotton bud soaked in methylated spirits.