HardLabs

AZTEC Motherboard

awarsewa·aztec·kicad/main_pcb /AZTEC_motherboard.kicad_pcb

AZTEC Motherboard PCB layout, top view — open source AVR/Arduino board by awarsewa

About the AZTEC Motherboard PCB

AZTEC Motherboard is an open source AVR/Arduino PCB design by awarsewa, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 168 × 150 mm, with 307 components from 38 distinct parts.

Its main chip is the ATMEGA16/32/644, from the AVR/Arduino family. Other key parts include the SFH620A, 74HCT125, CD4532B, 4071 and 74HCT165N. By type, the board carries 195 resistors, 63 capacitors, 23 ICs, 18 connectors, 4 switches and 2 diodes.

From the project

Bringing a 1976 pinball machine back to life

Main components on the AZTEC Motherboard

SFH620A74HCT125ATMEGA16/32/644CD4532B407174HCT165N74HC595

AZTEC Motherboard bill of materials (BOM)

307 components, 38 distinct parts.

QtyPartRefs
1
SFH620A
U1
6
74HCT125
U2, U4, U11, U12, U14, U15
1
ATMEGA16/32/644
U3
5
CD4532B
U5, U6, U7, U8, U13
2
4071
U9, U10
2
74HCT165N
U16, U17
6
74HC595
U18, U19, U20, U21, U22, U23
1
20 MHz
Y1
1
Conn_01x04_Female
J1
1
ISP
J3
1
Inputs_1
J4
1
Inputs_2
J5
1
Inputs_3
J6
1
Inputs_4
J7
1
Inputs_5
J8
1
10¢ Adjust
J9
1
2 coins - 3 plays
J10
1
Feature Adjust
J11
1
25¢ Adjust
J12
1
5¢ Adjust
J13
Show 18 more
QtyPartRefs
1
Outputs_1
J14
1
Outputs_2
J15
1
Outputs_3
J16
1
Outputs_4
J17
1
Outputs_5
J18
1
Outputs_6
J19
1
Fuse
F1
4
Reset
SW1, SW2, SW3, SW4
1
PWR
D1
1
STATUS
D2
43
100n
C1, C3, C7, C8, C9, C12, C13, C14 +35
1
1u
C2
17
1µ
C4, C5, C6, C25, C26, C27, C28, C29 +9
2
22p
C10, C11
175
10k
R1, R2, R3, R9, R10, R11, R12, R13 +167
1
2k2
R4
17
22k
R5, R6, R7, R64, R65, R66, R67, R68 +9
2
100R
R8, R17

AZTEC Motherboard design files

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

AZTEC Motherboard: common questions

What microcontroller does the AZTEC Motherboard use?

The AZTEC Motherboard is built around the ATMEGA16/32/644, from the AVR/Arduino family.

How big is the AZTEC Motherboard PCB?

The AZTEC Motherboard measures 168 × 150 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AZTEC Motherboard?

307 components, from 38 distinct parts. The full bill of materials is listed on this page.

Where can I download the AZTEC Motherboard design files?

From the awarsewa/aztec repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the AZTEC Motherboard design in my own project?

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

Can I test firmware for the AZTEC Motherboard 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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