HardLabs

MIDIFAM

mikeyfarrow·DFAM-x-ATMEGA·PCB_Design_Kicad/MIDIFAM.kicad_pcb

MIDIFAM PCB layout, top view — open source AVR/Arduino board by mikeyfarrow

About the MIDIFAM PCB

MIDIFAM is an open source AVR/Arduino PCB design by mikeyfarrow, published on GitHub. It is a 2-layer board measuring 29 × 86.6 mm, with 72 components from 42 distinct parts.

Its main chip is the C14877, from the AVR/Arduino family. Other key parts include the DAC8562SDGSR, LM7805_TO220, C2873620 and C92651. By type, the board carries 24 resistors, 18 capacitors, 14 connectors, 7 diodes, 5 ICs and 3 switches.

Main components on the MIDIFAM

DAC8562SDGSRLM7805_TO220C2873620C92651C14877

MIDIFAM bill of materials (BOM)

72 components, 42 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
DAC8562SDGSR
IC1
1
LM7805_TO220
U1
1
C2873620
OPA4196xD
U4
1
C92651
6N137
U5
1
C14877
ATmega328-A
U6
1
PWR_IN
J1
1
ISP connector
J2
1
Voct_A
J3
1
Trig_A
J4
1
Vel_A
J5
1
Voct_B
J6
1
Trig_B
J7
1
Vel_B
J8
1
adv/clock
J9
1
midi
J10
1
back bottom
J11
1
front bottom
J12
1
back top
J13
1
front top
J14
1
re-sync
SW1
Show 22 more
QtyPartRefs
1
midi learn
SW2
1
seq. mode
SW3
1
16MHz
xtal1
2
C2128
1N4148
D1, D7
1
LED_A
D2
1
LED_B
D3
1
LED_clock
D4
2
C8598
rpp diode
D5, D6
6
C14663
100n
C1, C2, C3, C10, C12, C14
3
C15849
1u
C4, C15, C17
4
C1647
18p
C5, C6, C7, C16
1
C1623
0.33u
C8
2
C263975
10u
C9, C11
1
C14663
0.1u
C13
1
C21120
150n
C18
2
C407611
240k
R1, R3
4
C25819
47k
R2, R4, R16, R17
4
C22962
220R
R5, R8, R10, R14
7
C25804
10k
R6, R9, R11, R12, R13, R15, R24
3
C21190
1k
R7, R18, R19
2
C4216
33k
R20, R22
2
C23206
56k
R21, R23

MIDIFAM design files

The KiCad project lives in the mikeyfarrow/DFAM-x-ATMEGA repository on GitHub; these links point at the commit this page was built from.

MIDIFAM: common questions

What microcontroller does the MIDIFAM use?

The MIDIFAM is built around the C14877, from the AVR/Arduino family.

How big is the MIDIFAM PCB?

The MIDIFAM measures 29 × 86.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MIDIFAM?

72 components, from 42 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 MIDIFAM design files?

From the mikeyfarrow/DFAM-x-ATMEGA 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 MIDIFAM design in my own project?

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

Can I test firmware for the MIDIFAM 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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