HardLabs

RETRO-CIAA

brengi·CESE-PCB·2018/Germino/retro-ciaa.kicad_pcb

RETRO-CIAA PCB layout, top view — open source ESP32 board by brengi
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About the RETRO-CIAA PCB

RETRO-CIAA is an open source ESP32 PCB design by brengi, published on GitHub. It is a 2-layer board measuring 86 × 145 mm, with 101 components from 47 distinct parts.

Its main chip is the WIFI MODULE, from the ESP32 family. Other key parts include the VGA SYNC/JOY BUFFER, VGA RGB BUFFER, E-DDC I²C BUFFER, 1Mbit EEPROM and I²S AUDIO DAC. By type, the board carries 41 resistors, 30 capacitors, 9 connectors, 7 ICs and 3 diodes.

It belongs with the iot & wireless and retro computing designs in this gallery.

From the project

Curso de Diseño de Circuitos Impresos de la Carrera de Especialización en Sistemas Embebidos

El Curso de Diseño de Circuitos Impresos (DCI) es una asignatura optativa de la Carrera de Especialización en Sistemas Embebidos (CESE) de la Facultad de Ingeniería de la Universidad de Buenos Aires (FIUBA). Tiene una duración de dos meses, organizados en 8 clases semanales de 3 hs cada una. Para aprobar la asignatura los participantes deben realizar el diseño de un circuito impreso a elección durante el curso. En esta página quedan registradas dichas prácticas.

Main components on the RETRO-CIAA

VGA SYNC/JOY BUFFERVGA RGB BUFFERE-DDC I²C BUFFER1Mbit EEPROMI²S AUDIO DACWIFI MODULEBACKLIGHT COVER

RETRO-CIAA bill of materials (BOM)

101 components, 47 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
VGA SYNC/JOY BUFFER
U1
1
VGA RGB BUFFER
U2
1
E-DDC I²C BUFFER
U3
1
1Mbit EEPROM
U4
1
I²S AUDIO DAC
U5
1
WIFI MODULE
U6
1
BACKLIGHT COVER
U7
1
RGBHV TEST POINTS
P2
1
P2 PORT
P4
1
P1 PORT
P5
1
WIFI MODULE UART
P7
1
WIFI MODULE BOOT
P8
1
AUDIO LINE OUT
P9
1
SPI PORT
P10
1
I²C PORT
P11
1
ADC PORT
P12
1
RETROCIAA_VIDEO_CONN
G7
1
RETROCIAA_LINEOUT
G8
1
RETROCIAA_WIFI
G9
2
RETROCIAA_GAMEPAD
G10, G16
Show 27 more
QtyPartRefs
1
RETROCIAA_BLUETOOTH
G11
1
RETROCIAA_AUDIO
G12
1
RETROCIAA_1
G13
1
RETROCIAA_2
G14
1
RETROCIAA_VIDEO
G15
1
ESD_LOGO_15
LABEL1
1
WHITE BACKLIGHT Y
D1
1
WHITE BACKLIGHT Z
D2
1
BAT30
D3
2
10uF
C1, C17
5
1uF
C2, C4, C6, C8, C12
11
100nF
C3, C5, C7, C9, C13, C16, C22, C24 +3
2
100uF
C10, C11
2
2.2uF
C14, C15
2
2.2nF
C18, C19
1
1nF
C20
5
10uF
C21, C23, C25, C27, C29
18
47K
R1, R2, R3, R4, R19, R20, R21, R22 +10
3
499
R5, R8, R11
3
1K
R6, R9, R12
4
2K
R7, R10, R32, R33
6
100
R13, R15, R16, R17, R18, R31
1
0
R14
2
10K
R36, R40
2
470
R37, R39
1
5K9
R38
1
1M
R41

RETRO-CIAA design files

The KiCad project lives in the brengi/CESE-PCB repository on GitHub; these links point at the commit this page was built from.

RETRO-CIAA: common questions

What microcontroller does the RETRO-CIAA use?

The RETRO-CIAA is built around the WIFI MODULE, from the ESP32 family.

How big is the RETRO-CIAA PCB?

The RETRO-CIAA measures 86 × 145 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RETRO-CIAA?

101 components, from 47 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 RETRO-CIAA design files?

From the brengi/CESE-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 RETRO-CIAA design in my own project?

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

Can I test firmware for the RETRO-CIAA without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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