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D6

tpcarlson·synth-diy·d6/d6.kicad_pcb

D6 PCB layout, top view — open source RP2040/RP2350 board by tpcarlson
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About the D6 PCB

D6 is an open source RP2040/RP2350 PCB design by tpcarlson, published on GitHub. It is a 4-layer board measuring 80.5 × 128.5 mm, with 133 components from 27 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the TL074, TXS0108EPW, MAX7219ENG+, ds1882z-050+ and KCSA02-107. By type, the board carries 38 resistors, 23 diodes, 23 capacitors, 13 connectors, 12 ICs and 10 switches.

It belongs with the audio designs in this gallery.

From the project

Mostly Eurorack projects

Dice is a 16hp, clickless signal router. It can also be thought of a bit like a microprocessor-controlled sequential switch with one input and six outputs. Outputs are determined by rolls of a dice, or by manually muting and unmuting with buttons.

As measured by the joranalogue Test 3, around 100-200 mA on +12v and 40 mA on -12v at peak. The 5v rail is unused. The exact power draw depends on how many of the LEDs are lit at any one time.

D6, from the project README
From the project README

Main components on the D6

PicoTL074TXS0108EPWMAX7219ENG+ds1882z-050+KCSA02-107MC78L05MC7905

D6 bill of materials (BOM)

133 components, 27 distinct parts.

QtyPartRefs
1
Pico
U1
3
TL074
U2, U3, U4
1
TXS0108EPW
U5
1
MAX7219ENG+
U6
3
ds1882z-050+
U7, U8, U9
1
KCSA02-107
U10
1
MC78L05
U11
1
MC7905
U12
5
MMBT3904
Q1, Q2, Q3, Q4, Q5
11
AudioJack2
J1, J2, J3, J4, J5, J7, J8, J9 +3
1
Conn_02x05_Odd_Even
J6
1
AudioJack2_SwitchT
J13
1
—
@HOLE0
1
Jumper_3_Bridged12
JP1
6
20k
RV1, RV2, RV3, RV4, RV5, RV6
1
10k
RV7
10
SW_SPST
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +2
5
1N4148
D1, D11, D12, D13, D14
16
LED
D2, D3, D4, D5, D6, D7, D15, D16 +8
2
D_Schottky
D9, D10
Show 7 more
QtyPartRefs
19
100n
C1, C2, C3, C4, C5, C6, C7, C8 +11
4
10u
C12, C15, C24, C25
16
10k
R1, R2, R6, R14, R15, R16, R17, R21 +8
7
1k
R3, R4, R5, R32, R43, R44, R45
2
4k7
R7, R8
12
3.9k
R9, R10, R11, R18, R19, R20, R28, R29 +4
1
9.53k
R24

D6 design files

The KiCad project lives in the tpcarlson/synth-diy repository on GitHub; these links point at the commit this page was built from.

D6: common questions

What microcontroller does the D6 use?

The D6 is built around the Pico, from the RP2040/RP2350 family.

How big is the D6 PCB?

The D6 measures 80.5 × 128.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the D6?

133 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the D6 design files?

From the tpcarlson/synth-diy repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the D6 design in my own project?

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

Can I test firmware for the D6 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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