Long lead, positive
+
Short lead, negative
-
Line marked on the negative side
STEP 1 – PCB Assembly: Turrets & Small Components
*Note:
The electrolytic caps have polarity, insert the long lead into the hole labeled
with “+”
Placing the Turrets:
The turrets are very simple but they could be
tricky to do when the PCB is crowded, so let’s place
them first to have a neat job.
Don’t cover the hollow centre of
the turret you can just add a
little quantity of solder to keep it
in place. Later on, the turrets will
be fully soldered.
Place the Small Components.
Place R0, R3, D1 (take care with the polarity
which is indicated with a line) and C4 (bottom
side, also with polarity*).
Once soldered, cut the legs as close as possible to
the PCB because the electronics fit tight into the
box and you will need those millimetres.
Top
Side
Bottom
Side