Pots ‘n’ sockets PCB
1. Place the PCB on a flat surface. Place the
2 tactile switches into their solder pad.
Do not push them all the way through,
they should sit proud of the PCB (see
photo), their legs should not protrude
through the other side. Solder them into
place from the top of the PCB.
2. Solder the 4 potentiometers, the 2 toggle switches and the Tap LFO momentary
switch. Use the panel to make everything line up nicely.
3. Place all sockets on the PCB, making sure the ground tabs line up with the PCB’s
ground pads –be careful because there are two different orientations - then place
the panel over them. This will assure that the sockets are correctly positioned. Flip
the whole lot over and solder the sockets into place. Use cut off resistor legs to
connect the sockets’ ground tabs line up with the PCB’s ground pads.
4. Cut female headers to size and solder them into place. Make sure that they stick out
of the bottom of the PCB.
5. Put all 4 LEDs through their pads. Present the panel to the PCB, flip the whole lot
over, make sure the LEDs stick though the holes in the panel, solder in place.
Calibration
The Offset trimmer, as you might guess, adjusts the offset of the LFO waveforms. Take a
DMM, connect the black probe to ground and the red probe to the test pad next to the
trimmer. Adjust the trimmer until you read -1.6V on your DMM. The waveform should now
be centred with respect to 0V.
All done! Go play!