HardLabs

Gate sequencer

gridbugs·modular2·gate-sequencer/gate-sequencer.kicad_pcb

Gate sequencer PCB layout, top view — open source AVR/Arduino board by gridbugs

About the Gate sequencer PCB

Gate sequencer is an open source AVR/Arduino PCB design by gridbugs, published on GitHub under the MIT license. It is a 2-layer board measuring 166.3 × 174.9 mm, with 169 components from 52 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. By type, the board carries 55 connectors, 52 diodes, 33 resistors, 23 switches, 2 capacitors and 1 IC.

From the project

A modular synthesizer, where modules are designed as close to bare PCBs as is practical/safe. This is the spiritual successor to the briefcase modular synthesizer.

Main components on the Gate sequencer

Arduino_Nano_v3.x

Gate sequencer bill of materials (BOM)

169 components, 52 distinct parts.

QtyPartRefs
1
~
U1
1
Arduino_Nano_v3.x
A1
3
Power
J1, J2, J3
2
Clock
J4, J22
2
Gate 1
J5, J23
2
Gate 2
J6, J25
2
Gate 3
J7, J29
2
Gate 5
J8, J31
2
Gate 4
J9, J30
2
Gate 6
J10, J34
2
Gate 7
J11, J37
2
Gate 8
J12, J38
2
Gate 9
J13, J40
2
Gate 10
J14, J42
2
Gate 11
J15, J44
2
Gate 13
J16, J47
2
Gate 12
J17, J48
2
Gate 14
J18, J49
2
Gate 15
J19, J51
2
Gate 16
J20, J54
Show 32 more
QtyPartRefs
1
Conn_01x34_Socket
J21
16
LED
J24, J26, J27, J28, J32, J33, J35, J36 +8
1
Conn_01x34_Pin
J55
1
100K - Period
RV1
1
100K - Tempo
RV2
1
Mode 2
SW1
1
Mode
SW2
1
Clock Source
SW3
1
X1
SW4
1
X2
SW5
1
X3
SW6
1
X4
SW7
1
S1
SW8
1
S2
SW9
1
S3
SW10
1
S4
SW11
1
S5
SW12
1
S6
SW13
1
S7
SW14
1
S8
SW15
1
S9
SW16
1
S10
SW17
1
S11
SW18
1
S12
SW19
1
S13
SW20
1
S14
SW21
1
S15
SW22
1
S16
SW23
36
1N4148
D1, D2, D3, D4, D7, D8, D10, D13 +28
16
LED
D5, D6, D9, D11, D12, D14, D17, D20 +8
2
100nf
C1, C2
33
1K
R1, R2, R3, R4, R5, R6, R7, R8 +25

Gate sequencer design files

The KiCad project lives in the gridbugs/modular2 repository on GitHub; these links point at the commit this page was built from.

Gate sequencer: common questions

What microcontroller does the Gate sequencer use?

The Gate sequencer is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the Gate sequencer PCB?

The Gate sequencer measures 166.3 × 174.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Gate sequencer?

169 components, from 52 distinct parts. The full bill of materials is listed on this page.

Where can I download the Gate sequencer design files?

From the gridbugs/modular2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Gate sequencer design in my own project?

Yes, under the terms of its MIT license, which gridbugs chose for the repository.

Can I test firmware for the Gate sequencer without the hardware?

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

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