Electronic circuit production #1

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Here is a wiring diagram of the swiching board to control LEDs and servo.






Let's start making the circuit shown below.

Soldering of the registers

Prepare solder, soldering iron, PCB borad (bread board layout), 1k and 1.5k ohm registors.



Solder registers like this.



<the other side>



Remove the excess leads.

Soldering of the transistors

Bned emitter lead like this.



Solder transistors as shown in the pictures.

Soldering of white LEDs (for roof illumination)

Next, solder the white LEDs to the board.



First, prepare electric wire.



Make a 2 notches on both sides of the vinyl film with the tip of the nippers.



Peel of the vinyl file to expose the wires inside.



<If using a stripper>
Place the wire on the blade of the stripper.



Close the blades tightly and pull the vinyl film off.



Make sure not to cut the electric wires inside.



Make the following wires.
18cm x4, 24cm x2, 45cm x2


Next step is soldering of the LED as shown below.



Solder 220 ohm registor to the anode (longer one) of the LED. Leads of LED and registor can be temporary fixed by twisting.


Solder wires to the another lead of the registor.



Solder wires to cathode.



Cover the soldered parts with heat shrink tubes and heat them with solder iron to tight them and prevent short-circuit.



Let's solder the remained 3 LEDs.
Put the 3mm heat-shrink tubes on the wires.



Solder 220 ohm registers to white LEDs. Then solder them to 18 or 24 cm wires and cover with heat-shrink tubes.



Solder the 45 cm wires to the board like this.

Soldering of power cables

Prepare jumper wires with single female connectors.




Solder it to the board.



If your wiring is correct, the circuit should look like this.