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2xpetdisk esp32

yo5ptd·petdisk-esp32

2xpetdisk esp32 PCB layout, top view — open source ESP32 board by yo5ptd
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About the 2xpetdisk esp32 PCB

2xpetdisk esp32 is an open source ESP32 PCB design by yo5ptd, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 75 × 100 mm, with 31 components from 15 distinct parts.

Its main chip is the ESP32-WROOM-32D, from the ESP32 family. Other key parts include the SN74LVC245APW and AMS1117-3.3. By type, the board carries 13 resistors, 5 transistors, 4 connectors, 3 ICs, 3 capacitors and 1 diode.

From the project

CBM PETDISK based on Esp32 and MicroSD

As per bitfixer's Petdisk V2 Max https://github.com/bitfixer/petdisk-max . Ports as per https://github.com/svenpetersen1965/PET-IEEE-488-Extension .

I've only changed the SD slot to Hanbo Electric TS-013 as this was available at JLCPCB.

Panelized with Kikit addon with hand-breakable "mousebytes", it still fits the 100x100 mm JLCPCB limit (Kikit.json settings included, details in https://github.com/yaqwsx/KiKit).

2xpetdisk esp32, from the project README
From the project README

Main components on the 2xpetdisk esp32

ESP32-WROOM-32DSN74LVC245APWAMS1117-3.3

2xpetdisk esp32 bill of materials (BOM)

31 components, 15 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROOM-32D
U1
1
SN74LVC245APW
U2
1
AMS1117-3.3
U3
5
BSS138K
BSS138
Q1, Q2, Q3, Q4, Q5
1
Conn_01x08
J1
1
MICRO_SD_CARD_DET2
Hanbo TS-013
J3
1
PET_IEEE
J4
1
PET_IEEE_M
J31
2
BOHR3,5
DRL1, DRL2
1
LED
D1
1
100U
C1
2
10U
C2, C3
2
12K
R1, R2
1
1K
R3
10
10K
R4, R5, R6, R7, R8, R9, R10, R11 +2

2xpetdisk esp32 design files

The KiCad project lives in the yo5ptd/petdisk-esp32 repository on GitHub; these links point at the commit this page was built from.

2xpetdisk esp32: common questions

What microcontroller does the 2xpetdisk esp32 use?

The 2xpetdisk esp32 is built around the ESP32-WROOM-32D, from the ESP32 family.

How big is the 2xpetdisk esp32 PCB?

The 2xpetdisk esp32 measures 75 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 2xpetdisk esp32?

31 components, from 15 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 2xpetdisk esp32 design files?

From the yo5ptd/petdisk-esp32 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the 2xpetdisk esp32 design in my own project?

Yes, under the terms of its GPL-3.0 license, which yo5ptd chose for the repository.

Can I test firmware for the 2xpetdisk esp32 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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