Bill of Materials
1K x 4
4K7 x 1
10K x 4
47K x 1
100K x 3
220K x 1
All resistors ¼ watt
metal film.
SEISMOGRAF PIC
14 pin IC socket x 1
8 pin IC socket x 1
3.5mm socket x 5
Male header x 1
(cut to size)
Female header x 1
(cut to size)
Power header x 1
Knob x 3
Main PCB assembly
1.
Solder the diode and all resistors
2.
Solder all two IC sockets
3.
Solder the non elecrolytic capacitors
4.
Solder the 78L05
–
watch the polarity!
5.
Solder the box power header. Make sure the notch lines up with the screenprint
legend. If in doubt, have a look at a power cable, and make sure when inserted into
the header the red stripe lines up with the -12V screenprint.
6.
Solder all electrolytic capacitors.
7.
Cut male headers to size and solder them into place. Make sure that they stick out of
the bottom of the PCB.
