HardLabs

Main board

jevans3142·adc-bar-lx·hardware/main-board/main-board.kicad_pcb

Main board layout, top view — open source ESP32 board by jevans3142

About the Main board

Main board is an open source ESP32 PCB design by jevans3142, published on GitHub. It is a 2-layer board measuring 144.8 × 78.7 mm, with 29 components from 21 distinct parts.

Its main chip is the ESP32, from the ESP32 family. Other key parts include the DMX Input 5V Isolation, 6N136, MAX481E and DMX Output 5V Isolation. By type, the board carries 9 connectors, 8 resistors, 7 ICs, 3 capacitors and 2 relays.

It belongs with the iot & wireless and dev boards & breakouts designs in this gallery.

From the project

Bar lighting controller for the ADC Theatre

This repository hosts the software and hardware design for the ADC Theatre's bar lighting scene controller. The system is based around an ESP32 chip (using a development board typicaly found online as the DOIT board - 30 pin version, though as we are not using WiFi or Bluetooth etc the hardware could be easily adapted to another chip version) with DMX input and output, audio input for sound-to-light mode, and a remote scene set control panel.

Main components on the Main board

DMX Input 5V Isolation6N136MAX481EDMX Output 5V IsolationESP32

Main board bill of materials (BOM)

29 components, 21 distinct parts.

QtyPartRefs
1
DMX Input 5V Isolation
U1
2
6N136
U2, U6
2
MAX481E
U3, U4
1
DMX Output 5V Isolation
U5
1
ESP32
U7
1
DMX_In_Connector
J1
1
DMX_Out_Connector
J2
1
PSU_Connector
J3
1
Display_Connector
J4
1
Remote_Panel _Connector
J5
1
S2L_Board_Connector
J6
1
SD_Card_Connector_1
J7
1
Buttons_Connector
J8
1
SD_Card_Connector_2
J9
2
DPDT Relay
K1, K2
2
470nF
C1, C2
1
10uF
C3
2
470R
R1, R7
3
4.7k
R2, R4, R5
2
120R
R3, R6
Show 1 more
QtyPartRefs
1
10k
R8

Main board design files

The KiCad project lives in the jevans3142/adc-bar-lx repository on GitHub; these links point at the commit this page was built from.

Main board: common questions

What microcontroller does the Main board use?

The Main board is built around the ESP32, from the ESP32 family.

How big is the Main board?

The Main board measures 144.8 × 78.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Main board?

29 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the Main board design files?

From the jevans3142/adc-bar-lx repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Main board design in my own project?

The repository has no license, so all rights stay with jevans3142. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Main board 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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