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Mainboard

Synthron·ModLab·Hardware/V3/Mainboard/V2/Mainboard.kicad_pcb

Mainboard PCB layout, top view — open source ESP32 board by Synthron
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About the Mainboard PCB

Mainboard is an open source ESP32 PCB design by Synthron, published on GitHub. It is a 4-layer board measuring 160 × 100 mm, with 206 components from 48 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the AP1117-33, STM32F407VGTx, USBLC6-2SC6, LM2904 and MAX485E. By type, the board carries 76 resistors, 46 capacitors, 30 transistors, 15 diodes, 14 connectors and 11 test points.

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

From the project

Modular Electronics Workstation

The ModLab is designed to be housed in a 19" Rack with 3U. It is the improved version of the (failed) Arduino Workstation I built a long time ago.

But now It will be bigger, better and way too complicated.

- [X] Rewrite documentation in english - [ ] Write better introduction - [ ] explain what exactly the ModLab is - [X] update changes for TFT - [X] Explain TFT Protocol - [ ] Attach Schematics - [X] Cleanup Repo

Main components on the Mainboard

AP1117-33STM32F407VGTxUSBLC6-2SC6LM2904MAX485ESN65HVD232ESP32-WROOM-32

Mainboard bill of materials (BOM)

206 components, 48 distinct parts.

QtyPartRefs
2
AP1117-33
U201, U202
1
STM32F407VGTx
U301
1
USBLC6-2SC6
U401
1
LM2904
U402
1
MAX485E
U403
1
SN65HVD232
U404
1
ESP32-WROOM-32
U405
29
BSS138
Q301, Q302, Q303, Q304, Q305, Q306, Q307, Q308 +21
1
BC856
Q401
1
8MHz
Y301
1
32.768kHz
Y302
1
DIN41612_02x32_AC
J101
1
SWD
J301
1
TFT
J401
1
USB_B
J402
1
ESP_PROG
J403
1
GSD090012SEU
J404
8
0
J454, J455, J456, J457, J458, J459, J463, J464
11
TestPoint
TP301, TP302, TP303, TP304, TP305, TP401, TP402, TP403 +3
1
SMAJ5,0A
D201
Show 28 more
QtyPartRefs
1
P6SMB26
D202
2
P6SMB16
D203, D204
1
LL4148
D301
8
LED
D302, D303, D304, D305, D306, D307, D308, D309
2
CDSOT23-T05LC-Q
D401, D402
2
SMB-001
FB301, FB401
2
SRF3225TAC-101Y
L401, L402
4
100µ
C201, C202, C203, C204
7
1µ
C205, C208, C209, C212, C302, C303, C413
21
100n
C206, C207, C210, C211, C301, C304, C306, C309 +13
1
0.22F/5V
C305
2
20p
C307, C308
2
2u2
C310, C311
2
10p
C312, C313
2
4µ7
C320, C410
1
10µ
C401
2
47p
C403, C404
2
1n
C405, C408
37
10k
R301, R309, R310, R311, R312, R317, R318, R319 +29
2
100
R302, R303
1
1M
R304
16
1k
R305, R306, R307, R308, R313, R314, R315, R316 +8
2
100k
R401, R410
1
1k5
R411
2
22
R412, R413
9
4k7
R428, R430, R431, R432, R433, R434, R452, R453 +1
2
120
R429, R441
4
3k3
R448, R449, R450, R451

Mainboard design files

The KiCad project lives in the Synthron/ModLab 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-32, from the ESP32 family.

How big is the Mainboard PCB?

The Mainboard measures 160 × 100 mm, has 4 copper layers and is 2.6062 mm thick.

How many components are on the Mainboard?

206 components, from 48 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mainboard design files?

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

Can I use the Mainboard design in my own project?

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

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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