There are numerous resources on the Internet that describe the process of soldering electronic components to PCBs. See, for example the soldering tutorial
. The order in which you install components doesn't really matter, although I have found working from smallest to largest them easiest. I assemble the board in the following order.Jumpers
I use jumpers (small pieces of wire) in a few places instead of having a double sided board. There a several places in this design where I could not figure out a simple way of getting a wire from one place to another without crossing a second wire. Jumpers were my solution.
Note that the schematic calls for a second diode (D2) where power enters the LM386 chip. This was necessary when the circuit only consisted of the amplifier portion; I don't think it is necessary any more and I replace it with a jumper.Chip holders
I put the chip holders in next. The two provide a relatively stable surface on which to balance the board upside down for future soldering. The orientation of the chip holders matters -- make sure the notched end is located as illustrated so that the chips are oriented correctly when inserted.Small capacitors
The four small capacitors go in next.Resistor
The resistor is positioned verticallyDiode
The holes for the diode should be 3/64. The spacing between holes is a little small so care must be taken fitting the diode in place. More important, however, is getting the orientation of the diode correct.Large capacitors and inductor
These go in easily and form a sort of wall to support the battery holder. Care must be taken to ensure the correct orientation of the electrolytic capacitors. Note the location of the white strip on each capacitor. The orientation of the inductor does not matter.Check your work
Be careful to orient the components properly. The orientation of the chip holders, the electrolytic capacitors and the diode matter. Check the layout diagram and the schematic or just make sure things match up with the pictures!