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EspressoMachineBoard

parya03·EspressoMachineBoard_HW·EspressoMachineBoard/EspressoMachineBoard.kicad_pcb

EspressoMachineBoard PCB layout, top view — open source ESP32 board by parya03

About the EspressoMachineBoard PCB

EspressoMachineBoard is an open source ESP32 PCB design by parya03, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 150 × 75 mm, with 63 components from 32 distinct parts.

Its main chip is the ESP32-S3-WROOM-2, from the ESP32 family. Other key parts include the AP7361C-33E, LM358_DFN, 74AHC1G08GW,125 and LM4040DCK-2.5. By type, the board carries 15 resistors, 12 test points, 7 connectors, 6 ICs, 5 transistors and 4 jumpers.

From the project

Espresso Machine Board Project Make a new controller for my Chefman CraftBrew

Espresso Machine Board Project Make a new controller for my Chefman CraftBrew

Power converter KiCad symbol and footprint from: https://github.com/yaserharba/WX-DC12003_Kicad

Single shot brew temp: ~180 F Steam temp: ~205 F at valve, ~230F at boiler NTC 100k(?) Thermistor - ~114kOhm at ~22.5C CMS79FT738 MCU 13 x 6 cm board 3/16” OD, 1/8”(?) ID tubing

Why is OPV before boiler? Where to put actual pressure sensor?

Main components on the EspressoMachineBoard

ESP32-S3-WROOM-2AP7361C-33ELM358_DFN74AHC1G08GW,125LM4040DCK-2.5

EspressoMachineBoard bill of materials (BOM)

63 components, 32 distinct parts.

QtyPartRefs
1
ESP32-S3-WROOM-2
U1
1
AP7361C-33E
U2
2
LM358_DFN
U3, U9
1
74AHC1G08GW,125
U5
1
LM4040DCK-2.5
U6
5
NMOS
Q1, Q2, Q7, Q8, Q9
1
USB_C_Receptacle_USB2.0_14P
J1
1
Conn_01x04_Pin
J2
1
Conn_01x02_Pin
J3
1
Conn_01x02_Pin
J4
1
Conn_01x08_Pin
J5
2
Conn_01x14_Pin
J6, J7
1
Buzzer
BZ1
1
1A
F1
4
Jumper_2_Open
JP1, JP2, JP3, JP4
2
SW_Push
SW1, SW2
1
RotaryEncoder_Switch
SW3
1
SW_SPDT
SW4
12
TestPoint
TP1, TP2, TP3, TP8, TP15, TP16, TP17, TP18 +4
1
RGB
LED1
Show 12 more
QtyPartRefs
1
PTVS6V0S1UR-QX
D1
1
MP01EA06
D2
1
LED
D3
2
100n
C1, C2
2
4.7u
C5, C10
2
5.1k
R1, R2
5
10k
R3, R19, R23, R31, R32
1
65
R4
2
37.5k
R5, R6
1
3k
R24
3
65
R28, R29, R30
1
22k
R33

EspressoMachineBoard design files

The KiCad project lives in the parya03/EspressoMachineBoard_HW repository on GitHub; these links point at the commit this page was built from.

EspressoMachineBoard: common questions

What microcontroller does the EspressoMachineBoard use?

The EspressoMachineBoard is built around the ESP32-S3-WROOM-2, from the ESP32 family.

How big is the EspressoMachineBoard PCB?

The EspressoMachineBoard measures 150 × 75 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the EspressoMachineBoard?

63 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the EspressoMachineBoard design files?

From the parya03/EspressoMachineBoard_HW repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the EspressoMachineBoard design in my own project?

Yes, under the terms of its Apache-2.0 license, which parya03 chose for the repository.

Can I test firmware for the EspressoMachineBoard 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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