Step 1: What You Need
- Complete Parts List [.xls]
- PCB Layout v0.24 [.png]
- Circuit assembly diagram for etched PCB [.png]
You will also need the following tools:
Soldering iron, kit and solder.
Step 2: Solder on the Resistors and Capacitors
Place comonents flush up against the board from above. After soldering the legs onto the pads, trim of the excess.
Start by soldering all the resistors. Follow with all the capacitors and the jumper lead. Ensure that the electrolytic capacitor is oriented as described on the circuit layout diagram, the negative side away from the socket.
Step 3: Solder on the Socket, Coil and Trimcap
Next solder on the socket. Take care to ensure the socket is solidly soldered on. Solder on the trimcap, taking care to orient the flat side as shown. Then add the coil. The instructable for making the coils is here.
Step 4: Solder on the Transistor
Finally add the transistor, taking care to orient the pins correctly.
Step 5: Add the Power Connections
Solder on the positive lead from the PP3 clip to +9V. Add a short length of wire to the ground connection.
Step 6: Prepare the Switch
Bend the positive lead of the switch LED around one of the switch pole legs as shown. Solder and trim the LED leg as shown. Bend over the remaining LED leg to make a loop.