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Mainboard

SimLinkModule·PCB·mainBoard/mainBoard.kicad_pcb

Mainboard PCB layout, top view — open source ESP32 board by SimLinkModule

About the Mainboard PCB

Mainboard is an open source ESP32 PCB design by SimLinkModule, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 35 × 52.1 mm, with 25 components from 14 distinct parts.

Its main chip is the ESP32-WROOM-E, from the ESP32 family. Other key parts include the AMS1117-3.3. By type, the board carries 7 capacitors, 6 resistors, 4 connectors, 2 ICs, 2 transistors and 2 switches.

It belongs with the iot & wireless and displays & leds designs in this gallery.

From the project

PCBs for a BLE game controller expansion module for the TBS Tango 2

There are 3 PCBs in this repo. The ConnectorBoard is responsible for the connection between the radio and the module. The MainBoard contains the ESP32 and a JST GH port for flashing. Flashing works in the same way as the ESP32 devkits with esptool.py. An additional USB-FTDI device is required for this. The IO board contains all the buttons and the display for the user. The PCB was divided into three parts to ensure that it can be installed in a shell as modularly as possible. Also, in the event of circuit faults, you don't have to order everything.

Main components on the Mainboard

AMS1117-3.3ESP32-WROOM-E

Mainboard bill of materials (BOM)

25 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AMS1117-3.3
U1
1
ESP32-WROOM-E
U2
2
SS8050-G
Q1, Q2
1
CONN_01X01
Conn_01x01
J1
2
CONN_01X06_MALE
Conn_01x06_Male
J2, J3
1
CONN_01X03_MALE
Conn_01x03_Male
J4
2
C520860
SW1, SW2
1
C84263
RED LED
D1
1
BAT760-7
D2
3
22U
22u
C1, C2, C4
2
0.1U
0.1u
C3, C5
2
0.1U
0.1u
C6, C7
3
4.7K
R1, R5, R6
3
10K
R2, R3, R4

Mainboard design files

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

Mainboard: common questions

What microcontroller does the Mainboard use?

The Mainboard is built around the ESP32-WROOM-E, from the ESP32 family.

How big is the Mainboard PCB?

The Mainboard measures 35 × 52.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mainboard?

25 components, from 14 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 Mainboard design files?

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

Can I use the Mainboard design in my own project?

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

Can I test firmware for the Mainboard 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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