Christmas tree solder kit (OT2647 SH series) – instruction manual

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This instruction manual shows you how to assemble the OT2647 SH series Christmas tree solder kit, a small Christmas tree with flashing red, green, and yellow LEDs. Required tools: soldering iron, solder, and wire cutters.

Image of the fully soldered Christmas tree PCB with red, yellow, and green LEDs — The assembled Christmas tree solder kit

Parts list

Component	Location	PCB code	Quantity
Resistor 100 Ω	R2/R4/R6/R7	SH-A	4
Resistor 4.7K Ω	R1/R3/R5	SH-A	3
Capacitor 47 µF	C1/C2/C3	SH-A	3
LED 3mm red	D1 t/m D6 + D19	SH-A	7
LED 3mm yellow	D7 t/m D12	SH-A	6
LED 3mm green	D13 t/m D18	SH-A	6
Transistor 9014	Q1 t/m Q3	SH-A	3
Resistor 100 Ω	R2/R4/R6	SH-B	1
Resistor 4.7K Ω	R1/R3/R5	SH-B	1
Capacitor 47 µF	C1/C2/C3	SH-B	3
LED 3mm red	D7 t/m D12	SH-B	6
LED 3mm yellow	D13 t/m D18	SH-B	6
LED 3mm green	D1 t/m D6	SH-B	6
Transistor 9014	Q1 t/m Q3	SH-B	3
Switch 5.8mm	S1	SH-C	1
DC socket 3.5mm	J1	SH-C	1
Battery holder 3xAA	BAT4.5V	SH-C	1

Package contents

1x PCB SH-A
1x PCB SH-B
1x PCB SH-C
7x Resistor 100 Ω
6x Resistor 4.7K Ω
6x NPN Transistor S9014
6x Capacitor 47µF 16V
13x LED 3mm Red
12x LED 3mm Green
12x LED 3mm Yellow
1x USB to DC 3.5mm cable
1x DC socket J1 3.5mm
1x Switch S1 5.8mm
1x Battery holder for 3x AA batteries
1x Otronic Dutch instruction manual

Image of the assembled Christmas tree PCB — The Christmas tree solder kit, ready for assembly

Resistors

Schematic drawing of a 100 Ohm resistor — 100 Ohm resistor

Schematic drawing of a 4,7K Ohm resistor — 4,7K Ohm resistor

The PCBs have a unique code. In the overview on the back of this instruction manual, it is indicated for each PCB which components you need to solder. For example: R6 on PCB CTR-30A is a different resistor than R6 on PCB CTR-30B. The LEDs are arranged in a specific order in this manual, but may also be placed in a different order if desired.

Assembly instructions

Start by soldering the resistors. Resistors are not polarized, which means they can be placed in either direction and there is no + or –.
Solder the transistors and make sure that the flat and round sides match the illustration on the PCB.
Solder the capacitors and pay close attention to the + and the -. The capacitor has a white band shown with a minus sign inside it. You can also tell by the length of the leads. The long lead is the + and the short lead is the -. On the PCB, the slanted white stripes indicate the - side.

Close-up of capacitor with long (+) and short (-) lead — Capacitor with + and - leads indicated

Solder the LEDs according to the diagram above. On the PCB there is a round and a square hole. The round one is the – and the square one is the +. On the LED, the long lead is the + and the short lead is the -. The minus side can also be identified by the flat side on the LED itself.

Close-up of red LED with long (+) and short (-) lead — LED with + and - leads indicated

Once all components have been soldered, PCBs CTR-30A and CTR-30B can be slid together. Then solder the reinforcement points together so everything becomes a sturdy whole.
Now place the Christmas tree on the base plate CTR-30C and pay close attention to the + and the -. Then solder the tree in place. MERRY CHRISTMAS!

OTRONIC® is a registered trademark. Nothing from this instruction manual may be copied without permission from OTRONIC. For more information about OTRONIC products, visit OTRONIC.NL. OTRONIC – Crommelinbaan 61c – 2142 EX – Cruquius – Netherlands.