HardLabs

Zenko

FazalThe·Zenko·PCB/Calculator.kicad_pcb

Zenko PCB layout, top view — open source ESP32 board by FazalThe

About the Zenko PCB

Zenko is an open source ESP32 PCB design by FazalThe, published on GitHub. It is a 4-layer board measuring 72 × 98.4 mm, with 120 components from 20 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the AP2112K-3.3, MCP73831-2-OT and MCP23017_SO. By type, the board carries 47 diodes, 46 switches, 9 capacitors, 7 resistors, 4 ICs and 2 battery holders.

From the project

An open-source modern calculator with camera capability

A custom-built opensource scintific calculator with built in camera. Code it to make it do what ever you want.

- MCU : ESp-32-S3-WROOM-1 - I/O Expander : MCP23107 - Camera : OV2640 - Display : TBD

Zenko, from the project README
From the project README

Main components on the Zenko

AP2112K-3.3MCP73831-2-OTESP32-S3-WROOM-1MCP23017_SO

Zenko bill of materials (BOM)

120 components, 20 distinct parts.

QtyPartRefs
1
AP2112K-3.3
U1
1
MCP73831-2-OT
U2
1
ESP32-S3-WROOM-1
U3
1
MCP23017_SO
U4
1
USB_C_Receptacle_USB2.0_14P
J1
2
Conn_01x01_Pin
BT+1, BT-1
2
SW_Push
Boot1, Reset1
1
Conn_01x24
Cam1
1
Conn_01x04_Pin
Display1
46
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +38
46
D
D1, D2, D3, D4, D5, D6, D7, D8 +38
1
LED
D57
2
4.7uF
C1, C2
2
0.1uF
C3, C9
3
10uF
C4, C7, C8
2
1uF
C5, C6
1
4.7k
R1
1
470
R2
2
5.1k
R3, R4
3
10k
R5, R6, R7

Zenko design files

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

Zenko: common questions

What microcontroller does the Zenko use?

The Zenko is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Zenko PCB?

The Zenko measures 72 × 98.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Zenko?

120 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Zenko design files?

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

Can I use the Zenko design in my own project?

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

Can I test firmware for the Zenko 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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