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TSynth Teensy 4.1

Electrotechnique·TSynth-Teensy4.1·Mechanical/Main_PCB_V1_3_KiCAD/Tsynth2_Rev1.3.kicad_pcb

TSynth Teensy 4.1 PCB layout, top view — open source NXP board by Electrotechnique
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About the TSynth Teensy 4.1 PCB

TSynth Teensy 4.1 is an open source NXP PCB design by Electrotechnique, published on GitHub. It is a 2-layer board measuring 312 × 140 mm, with 105 components from 65 distinct parts.

Its main chip is the TEENSY4.1, from the NXP family. Other key parts include the CD74HC4067M, 6N137 and 74HC04. By type, the board carries 37 capacitors, 9 resistors, 8 connectors, 7 switches, 5 ICs and 5 diodes.

It belongs with the audio designs in this gallery.

From the project

TSynth for Teensy 4.1

- Electrical schematic - 3D models - End cheeks, side panel columns, display standoff, encoder knob (D-shape shaft)

EncoderKnobEC12_6mm is for 6mm splined encoder shafts

EncoderKnobEC12Dshape is for 6mm D-shaped encoder shafts

T41LaserCutCase3_5Jk.svg - Is for PCBs with 3.5mm headphone sockets

T41LaserCutCase6_35Jk.svg - Is for PCBs with 1/4" / 6.35mm headphone sockets

Main components on the TSynth Teensy 4.1

TEENSY4.1CD74HC4067M6N13774HC04

TSynth Teensy 4.1 bill of materials (BOM)

105 components, 65 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TEENSY4.1
Teensy4.1
U1
2
CD74HC4067M
U2, U3
1
6N137
U4
1
74HC04
U5
1
3.5mm Jack
J1
1
To Audio Board
J2
1
USB Host
J3
1
USB Client
J4
1
1/4" Jack
J5
1
SPI Display
J6
1
MIDI In
J7
1
MIDI Out/Thru
J8
1
Recall
ENC1
1
Noise
RV1
1
Pitch LFO Rate
RV2
1
Pitch LFO Wave
RV3
1
Pitch LFO Amt
RV4
1
Detune
RV5
1
Osc Mix
RV6
1
Attack Filter
RV7
Show 45 more
QtyPartRefs
1
Decay Filter
RV8
1
Pitch Env Mod
RV9
1
PWM Rate
RV10
1
Osc2 Pitch
RV11
1
Osc2 Waveform
RV12
1
Osc2 PWM Amt
RV13
1
Osc1 Pitch
RV14
1
Osc1 Waveform
RV15
1
Osc1 PWM Amt
RV16
1
Release Amp
RV17
1
Sustain Amp
RV18
1
Decay Amp
RV19
1
Attack Amp
RV20
1
Filter LFO Amt
RV21
1
FX Mix
RV22
1
FX Amt
RV23
1
Glide
RV24
1
Filter LFO Wave
RV25
1
Filter LFO Rate
RV26
1
Cutoff
RV27
1
Resonance
RV28
1
Filter Type
RV29
1
Sustain Filter
RV30
1
Release Filter
RV31
1
Filter Env Amt
RV32
1
Volume
RV33
1
Osc FX
SW1
1
Unison
SW2
1
Tempo
SW3
1
Retrig
SW4
1
Settings
SW5
1
Save
SW6
1
Back
SW7
1
Osc FX LED
D1
1
Unison LED
D2
1
Tempo LED
D3
1
Retrig LED
D4
1
1N4148WS
D5
37
0.1UF
0.1uF
C1, C2, C3, C4, C5, C6, C7, C8 +29
4
1K5
1k5
R3, R4, R6, R8
1
220R
R7
1
4K7
4k7
R9
1
10R
R10
1
33R
R11
1
100R
R12

TSynth Teensy 4.1 design files

The KiCad project lives in the Electrotechnique/TSynth-Teensy4.1 repository on GitHub; these links point at the commit this page was built from.

TSynth Teensy 4.1: common questions

What microcontroller does the TSynth Teensy 4.1 use?

The TSynth Teensy 4.1 is built around the TEENSY4.1, from the NXP family.

How big is the TSynth Teensy 4.1 PCB?

The TSynth Teensy 4.1 measures 312 × 140 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TSynth Teensy 4.1?

105 components, from 65 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the TSynth Teensy 4.1 design files?

From the Electrotechnique/TSynth-Teensy4.1 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the TSynth Teensy 4.1 design in my own project?

The repository has no license, so all rights stay with Electrotechnique. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the TSynth Teensy 4.1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.

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