HardLabs

Sme

robertshepherdcpp·sme·PCB/sme.kicad_pcb

Sme PCB layout, top view — open source ESP32 board by robertshepherdcpp

About the Sme PCB

Sme is an open source ESP32 PCB design by robertshepherdcpp, published on GitHub. It is a 2-layer board measuring 87.9 × 75.3 mm, with 31 components from 11 distinct parts.

Its main chip is the XIAO-ESP32-C6-SMD, from the ESP32 family. Other key parts include the MCP23017_SP. By type, the board carries 14 resistors, 10 diodes, 3 capacitors, 2 ICs, 1 connector and 1 switch.

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

From the project

a project that bridges connections across borders!

Sme, from the project README
From the project README

Main components on the Sme

XIAO-ESP32-C6-SMDMCP23017_SP

Sme bill of materials (BOM)

31 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-ESP32-C6-SMD
U1
1
MCP23017_SP
U2
1
SD_Card_Receptacle
J1
1
SW_Push
SW1
10
LED
D1, D2, D3, D4, D5, D6, D7, D8 +2
1
0.1uF
C1
1
10uF
C2
1
10u
C3
10
100
R1, R2, R3, R4, R5, R6, R7, R8 +2
2
10k
R11, R14
2
R
R12, R13

Sme design files

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

Sme: common questions

What microcontroller does the Sme use?

The Sme is built around the XIAO-ESP32-C6-SMD, from the ESP32 family.

How big is the Sme PCB?

The Sme measures 87.9 × 75.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sme?

31 components, from 11 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 Sme design files?

From the robertshepherdcpp/sme 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 Sme design in my own project?

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

Can I test firmware for the Sme 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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