Simple Pitch Follower
Music made easy
Extra info / Update
* Tracks pitch over five octaves
* Octave shifter
* Not highly accurate
* Fully customizable
@ www.elektor.com
- bare PCB for Pitch Follower shield
www.elektor.com/130330-1
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Green and Gold members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
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Bill of Materials
Resistors
Default: 0.25W, 5%
R1,R9,R12,R13 = 10kOhm
R2 = 100kOhm
R3,R4,R6 = 5.6MOhm
R5 = 4.7kOhm
R7 = 3.3MOhm
R8 = 27kOhm
R10 = 2kOhm (alternatively 2.2kOhm)
R11 = 1kOhm
P1 = 47kOhm trimpot
Capacitors
C1,C6,C7 = 100nF, 5mm pitch
C2 = 10pF, 2.5mm pitch
C3 = 100pF, 2.5mm pitch
C4 = 15pF, 2.5mm pitch
C5 = 100µF, 50V, 2mm pitch
Semiconductors
IC1 = LM3900
IC2 = LM393
Miscellaneous
K1,K4 = 8-pin pinheader, 0.1” pitch
K2 = 10-pin pinheader, 0.1” pitch
K3 = 6-pin pinheader, 0.1” pitch
K5 = 2-way PCB screw terminal block, 3.5mm pitch
K6 = 3.5mm stereo jack socket, PCB mount
DIP-14 IC socket for IC1 (optional)
DIP-8 IC socket for IC2 (optional)
Elektor PCB # 130330-1
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