HardLabs

Imac

jreus·imac-pcb

Imac PCB layout, top view — open source AVR/Arduino board by jreus

About the Imac PCB

Imac is an open source AVR/Arduino PCB design by jreus, published on GitHub. It is a 2-layer board measuring 90 × 67 mm, with 73 components from 44 distinct parts.

Its main chip is the arduino_pro_micro, from the AVR/Arduino family. Other key parts include the MCP6004, MCP6002, NCP4620, ADG849 and NCP1117-5. By type, the board carries 20 capacitors, 19 resistors, 9 connectors, 6 ICs, 5 diodes and 4 transistors.

Main components on the Imac

MCP6004MCP6002NCP4620ADG849arduino_pro_microNCP1117-5

Imac bill of materials (BOM)

73 components, 44 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP6004
U1
1
MCP6002
U2
1
NCP4620
U3
1
ADG849
U4
1
arduino_pro_micro
U5
1
NCP1117-5
U6
3
NX3008N***
Q1*, Q3*, Q4*
1
PMV48XP
Q2
1
EXT_IN
J1
1
STEREO_OUT
J2
1
PROBE1
P1
1
PATCHBAY_IO
P2
1
PROBE2
P3
1
EXT_OUT
P4
1
INPUTS
P5
1
PATCHBAY_A
P6
1
PWR_X3
P7
4
100K
100k
RV1, RV2, RV8, RV9
2
100K
100k
RV3, RV4
1
100k**
RV5*
Show 24 more
QtyPartRefs
2
100k†
RV6*, RV7*
1
RESET_SW
SW1
1
1N4148
D1
1
KP-2012LSGC
D2
3
CLP6B-WKW
D3, D4, D5
9
1u
C1, C7, C8, C10, C11, C12, C13, C14 +1
2
68N
68n
C2, C3
2
10N
10n
C4, C5
1
220p*
C6*
1
220U
220u
C9
4
100N
100n
C15, C16, C19, C20
1
22U
22u
C18
1
33K
33k
R1
1
100**
R2*
1
1k
R3
2
220
R4, R5
2
3K3
3k3
R6, R15
3
100
R7, R8, R16
3
100***
R9*, R12*, R17*
1
1K5
1k5
R10
2
27****
R11*, R19*
1
27
R13
1
1MEG
1meg
R14
1
100*
R18*

Imac design files

The KiCad project lives in the jreus/imac-pcb repository on GitHub; these links point at the commit this page was built from.

Imac: common questions

What microcontroller does the Imac use?

The Imac is built around the arduino_pro_micro, from the AVR/Arduino family.

How big is the Imac PCB?

The Imac measures 90 × 67 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Imac?

73 components, from 44 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 Imac design files?

From the jreus/imac-pcb repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Imac design in my own project?

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

Can I test firmware for the Imac 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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