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Synmidi Main

Bad-Dog-Designs·Ospray-8·Synmidi/Synmidi_Main.kicad_pcb

Synmidi Main PCB layout, top view — open source AVR/Arduino board by Bad-Dog-Designs
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About the Synmidi Main PCB

Synmidi Main is an open source AVR/Arduino PCB design by Bad-Dog-Designs, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 40 × 218 mm, with 79 components from 30 distinct parts.

Its main chip is the ARDUINO_NANO_V3.X, from the AVR/Arduino family. Other key parts include the NE5532. By type, the board carries 30 resistors, 16 connectors, 15 capacitors, 14 diodes, 2 switches and 1 IC.

It belongs with the audio designs in this gallery.

From the project

KiCad project files for the Ospray-8 Percussion synth

Main components on the Synmidi Main

NE5532ARDUINO_NANO_V3.X

Synmidi Main bill of materials (BOM)

79 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NE5532
U3
1
ARDUINO_NANO_V3.X
Arduino_Nano_v3.x
A1
1
DC 12v In
J3
2
Power Bus
J4, J8
2
Audio Bus
J5, J7
1
L Out
J6
1
TRIG 1-4
J9
1
TRIG 5-8
J10
1
R Out
J11
1
Midi Module
J13
1
Aux Trig
J14
1
Range_Select
J15
4
SMD Pads
J16, J17, J18, J19
1
Midi CH
SW1
1
Latching_DPDT
SW2
1
1N4004
D2
1
LED
D3
12
5V1
5v1
D4, D5, D6, D7, D8, D9, D10, D11 +4
2
220UF
220uF
C1, C16
4
330PF
330pf
C2, C5, C10, C11
Show 10 more
QtyPartRefs
4
4.7UF
4.7uF
C3, C4, C8, C9
1
100NF
100nF
C7
1
330UF
330uF
C12
1
100UF
100uF
C13
2
22UF
22uF
C14, C15
13
1k
R4, R5, R6, R7, R8, R9, R10, R11 +5
9
47K
47k
R13, R15, R16, R17, R25, R26, R27, R28 +1
4
10K
10k
R18, R19, R29, R30
2
220K
R20, R21
2
100K
100k
R22, R23

Synmidi Main design files

The KiCad project lives in the Bad-Dog-Designs/Ospray-8 repository on GitHub; these links point at the commit this page was built from.

Synmidi Main: common questions

What microcontroller does the Synmidi Main use?

The Synmidi Main is built around the ARDUINO_NANO_V3.X, from the AVR/Arduino family.

How big is the Synmidi Main PCB?

The Synmidi Main measures 40 × 218 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Synmidi Main?

79 components, from 30 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 Synmidi Main design files?

From the Bad-Dog-Designs/Ospray-8 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Synmidi Main design in my own project?

Yes, under the terms of its GPL-2.0 license, which Bad-Dog-Designs chose for the repository.

Can I test firmware for the Synmidi Main 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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