HardLabs

Server Motherboard

DDeGonge·MiniBot·pcbs/Server_Motherboard/Server_Motherboard.kicad_pcb

Server Motherboard PCB layout, top view — open source ESP32 board by DDeGonge

About the Server Motherboard PCB

Server Motherboard is an open source ESP32 PCB design by DDeGonge, published on GitHub under the MIT license. It is a 2-layer board measuring 48.8 × 50.5 mm, with 108 components from 10 distinct parts.

Its main chip is the ESP32-DEVKITC-32E, from the ESP32 family. Other key parts include the DRV8210DSGR and MCP23S17-E/ML. By type, the board carries 69 capacitors, 23 ICs, 8 connectors and 8 resistors.

It belongs with the robotics & motion, iot & wireless and power & battery designs in this gallery.

From the project

Super cheap super tiny bots for....playing chess...

A swarm robotics platform built around autonomous chess. The system runs 34 small differential-drive robots across an 8x8 board, each independently localized and coordinated by a central Python application running on a Raspberry Pi.

The design is general-purpose — chess is the primary use case, but the platform works for any scenario requiring coordinated movement of many small autonomous robots in a bounded space.

Main components on the Server Motherboard

DRV8210DSGRESP32-DEVKITC-32EMCP23S17-E/ML

Server Motherboard bill of materials (BOM)

108 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
21
DRV8210DSGR
Texas Instruments
IC1, IC21, IC22, IC23, IC24, IC25, IC26, IC27 +13
1
ESP32-DEVKITC-32E
U1
1
MCP23S17-E/ML
MCP23S17_ML
Microchip Technology
U2
2
Conn_01x20
J1, J2
1
Conn_01x02
J3
1
Conn_01x04
J4
4
Conn_01x02
J5, J6, J7, J8
25
GRM188R6YA106MA73D
10uF
Murata Electronics
C1, C3, C5, C7, C9, C11, C13, C15 +17
44
GRM155R71C104KA88J
0.1uF
Murata Electronics
C2, C4, C6, C8, C10, C12, C14, C16 +36
8
RC0402FR-0710KL
10k
YAGEO
R1, R2, R3, R4, R5, R6, R7, R8

Server Motherboard design files

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

Server Motherboard: common questions

What microcontroller does the Server Motherboard use?

The Server Motherboard is built around the ESP32-DEVKITC-32E, from the ESP32 family.

How big is the Server Motherboard PCB?

The Server Motherboard measures 48.8 × 50.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Server Motherboard?

108 components, from 10 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 Server Motherboard design files?

From the DDeGonge/MiniBot 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 Server Motherboard design in my own project?

Yes, under the terms of its MIT license, which DDeGonge chose for the repository.

Can I test firmware for the Server Motherboard 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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