• Input amplifier
  • 5v regulator
  • Window comparator
  • Output FETs
  • Jumper block that serves as programming interface and serial connection to PC. Note that VCC and MCLR is reversed from the normal sequence used by the Microschip programmers. Fixed in Mk II
  • PIC microcontroller to time the delay sequences

Sound Trigger v1.1 Schematic

Newer Older

====================================================================== =
NOTE: THIS SCHEMATIC IS OUTDATED. Rather use the Sound trigger Mk II schematics
====================================================================== =

Schematic for my custom sound trigger.

The parts list is as follows:

Part Value
---- -----
C1 0.1uF
C2,C3 10uF electrolytic
D1 1N4148
D2 1N4001
IC1 CA3140
IC2 LM393N
IC3 PIC12F675
IC4 78L05Z
J1 2.1mm DC socket
JP1 2 pin jumper block
LED1 5mm Red LED
Q1,Q2,Q3,Q4 2N7000
R1 4k7
R2 470k
R3,R4 220k
R5 150k
R6 560k
R7 4k7 preset
R8 220k preset
R9,R10 10k
R11,R12 1k
S1 push button switch
SV1 10 pin header block
X1,X2,X3 3.5mm stereo socket

See the photo notes for a description of each functional block. See here for a photo of the completed unit.

warrenski, pablography, and 4 other people added this photo to their favorites.

  1. Leonardo Vieira 60 months ago | reply

    This IC3 PIC12F675 doesn´t need a progam?

    I am trying here.

keyboard shortcuts: previous photo next photo L view in light box F favorite < scroll film strip left > scroll film strip right ? show all shortcuts