HardLabs

The Bonkulator

shannon-greenlight·bonkulator·main_board/main_board.kicad_pcb

The Bonkulator PCB layout, top view — open source AVR/Arduino board by shannon-greenlight
Simulate this board

About the The Bonkulator PCB

The Bonkulator is an open source AVR/Arduino PCB design by shannon-greenlight, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 70.8 × 110 mm, with 255 components from 46 distinct parts.

Its main chip is the C2932676, from the AVR/Arduino family. Other key parts include the C6961, C29162, C193969, C45218 and C460669. By type, the board carries 93 resistors, 54 capacitors, 46 diodes, 20 connectors, 19 ICs and 17 switches.

It belongs with the audio and displays & leds designs in this gallery.

From the project

Multifunction Eurorack Module

The Bonkulator is a Eurorack module that fits into a 3U x 14HP slot. It features 8 programmable outputs and 6 programmable inputs. The front-panel user controls consist of a 128×64 pixel 2-color OLED display, a rotary encoder for adjusting parameters and a button for each trigger and output.

These repos contain the materials needed to construct the Bonkulator main board and the front panel. The files are for KiCAD 6.0. Go to the Greenlight Kicad repo to get the needed libraries. The gerber files work with JLCPC and will most likely work with other board manufacturers.

Main components on the The Bonkulator

C6961C29162C193969C45218C460669C47538C148011

The Bonkulator bill of materials (BOM)

255 components, 46 distinct parts — part numbers from the project's BOM.

QtyPartRefs
8
C6961
TL072CDR
U1, U4, U9, U10, U12, U14, U17, U18
4
C6961
TL072CDR
U2, U5, U8, U19
1
C29162
AD5328
U6
1
C193969
ADS1015IDGS
U11
2
C45218
DG412DY-E3
U13, U24
1
C460669
AS431HANTR
U15
1
C47538
MB85RC256
U16
1
C148011
MCP23008-xSS
U21
1
C20526
MMBT3904
Q1
14
3.5mm Jack
J1, J2, J3, J4, J8, J9, J10, J11 +6
1
0022232041
Display Header
Molex
J5
1
C492422
EU Power
J6
1
C492422
Expansion Header
J7
2
C2932676
Conn_01x15_Female
J18, J19
1
C492401
Conn_01x02_Male
J20
1
C81348
10K
RV9
16
Push Button
SW1, SW2, SW3, SW4, SW6, SW7, SW8, SW9 +8
1
Adj
SW5
2
C2906764
TestPoint
TP1, TP2
2
C238123
TestPoint
TP3, TP4
Show 26 more
QtyPartRefs
20
C191023
1N5819
D1, D2, D3, D4, D5, D6, D7, D8 +12
11
BLUE LED
D9, D19, D20, D21, D22, D23, D24, D29 +3
1
YELLOW LED
D10
11
RED LED
D11, D25, D26, D27, D28, D33, D34, D35 +3
1
GREEN LED
D12
2
C545306
7.5V
D43, D44
2
C2887272
100uF
C1, C2
37
C49678
100nF
C3, C4, C5, C6, C8, C9, C14, C15 +29
2
C28323
1uF
C7, C43
12
C1710
10nF
C11, C12, C13, C26, C44, C45, C46, C47 +4
1
C28323
330nF
C31
15
C17414
10K
R1, R2, R3, R4, R32, R37, R56, R57 +7
4
C17513
300
R5, R6, R7, R8
1
C332260
200K .1%
R9
1
C17801
68K
R10
28
C122537
100K .1%
R11, R12, R13, R14, R15, R16, R17, R18 +20
9
C17633
43K
R20, R21, R22, R23, R48, R49, R50, R51 +1
8
C2681637
332K .1%
R24, R25, R26, R27, R52, R53, R54, R55
2
C374678
30.1K .1%
R28, R33
4
C406725
10K .1%
R29, R31, R34, R36
2
C17673
4.3K
R30, R35
10
C17414
2.2K
R38, R39, R69, R70, R71, R72, R97, R98 +2
2
C17798
680
R59, R60
5
C21190
1K
R76, R79, R80, R81, R82
1
C227724
23.7K 1%
R77
1
C17414
20K
R141

The Bonkulator design files

The KiCad project lives in the shannon-greenlight/bonkulator repository on GitHub; these links point at the commit this page was built from.

The Bonkulator: common questions

What microcontroller does the The Bonkulator use?

The The Bonkulator is built around the C2932676, from the AVR/Arduino family.

How big is the The Bonkulator PCB?

The The Bonkulator measures 70.8 × 110 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the The Bonkulator?

255 components, from 46 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 The Bonkulator design files?

From the shannon-greenlight/bonkulator repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the The Bonkulator design in my own project?

Yes, under the terms of its GPL-3.0 license, which shannon-greenlight chose for the repository.

Can I test firmware for the The Bonkulator 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.

More boards in bonkulator

Similar boards