Bill of Materials
Build Notes
The potentiometers and jacks are to be installed/soldered on the "panel" side of the
PCB (the one with the SMT components). Only the 2x8 power header is to be installed
on the rear of the PCB. Recommended soldering order:
1. 2x8 power header (mind the orientation)
2. trimmers
3. jacks
4. DPDT switch
5. potentiometers (dry fit with panel in place first)
Calibration Notes (T-ZED set to in HI range)
1. Set the base frequency via the BASE FREQ trimmer (10hz recommended).
2. Adjust the MOD BIAS trimmer until the MOD INDEX potentiometer has no effect on
the oscillator's frequency (make sure no input is present at MOD IN).
3. Adjust tracking via the V/OCT and HFT trimmers. HFT is used to correct inaccuracies
in the high frequency range (>2-3khz).
"VCO Tuner" is an excellent v/oct calibration tool. It can be found here:
https://github.com/TheSlowGrowth/VCOTuner/releases/tag/v0.2.3
https://www.youtube.com/watch?v=JpMFTOBXuv8
T-ZED oscillator - DIY kit
Component
Quantity
Specification
Reference
Threadless pot
6
b10k
all pots
Jack
10
Thonkiconn
all jacks
Big knob
1
Spline shaft
TUNE pot
Small knob
5
Spline shaft
all pots except TUNE
Big cap
1
(for big knob)
Small cap
5
(for small knob)
Trimmer pot
2
5k multiturn
V/OCT, HFT
Trimmer pot
2
100k singleturn
MOD BIAS, BASE
FREQ
DPDT switch
1
HI/LO
Power header
1
2x8 pin
Power cable
1
16-16 pin
