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Chameleon mesh node

MetaStrawman·chameleon-mesh-node·hardware/kicad/chameleon_mesh_node_v1.kicad_pcb

Chameleon mesh node PCB layout, top view — open source ESP32 board by MetaStrawman
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About the Chameleon mesh node PCB

Chameleon mesh node is an open source ESP32 PCB design by MetaStrawman, published on GitHub under the Custom license license. It is a 2-layer board measuring 60 × 34 mm, with 5 components from 5 distinct parts.

Its main chip is the XIAO-ESP32-C5-SMD, from the ESP32 family. Other key parts include the Wio-WM1110 and BME280. By type, the board carries 3 ICs, 1 connector and 1 capacitor.

It belongs with the rf & radio, sensors and iot & wireless designs in this gallery.

From the project

Chameleon Mesh Node — Seeed Meshtastic Build-Off 2026: dual-radio off-grid telemetry + LoRa mesh relay (Wio-WM1110 LoRa/GNSS + XIAO ESP32-C5 + BME280)

Submission: Seeed Studio Meshtastic Build-Off 2026 Status: Design complete & verified — routed, DRC-clean (0 errors / 0 unconnected; 29 cosmetic silkscreen/DFM warnings), Gerbers exported. Pre-fabrication (first article not yet ordered). Hardware revision: v1.2 License: Multi-license open source — CERN-OHL-S-2.0 (hardware), GPL-3.0-or-later (Meshtastic firmware variant), MIT (tooling). See LICENSE and NOTICE.md.

Chameleon mesh node, from the project README
From the project README

Main components on the Chameleon mesh node

XIAO-ESP32-C5-SMDWio-WM1110BME280

Chameleon mesh node bill of materials (BOM)

5 components, 5 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-ESP32-C5-SMD
U2
1
Wio-WM1110
U3
1
BME280
U4
1
USB-C Power+Data
J1
1
100nF
C1

Chameleon mesh node design files

The KiCad project lives in the MetaStrawman/chameleon-mesh-node repository on GitHub; these links point at the commit this page was built from.

Chameleon mesh node: common questions

What microcontroller does the Chameleon mesh node use?

The Chameleon mesh node is built around the XIAO-ESP32-C5-SMD, from the ESP32 family.

How big is the Chameleon mesh node PCB?

The Chameleon mesh node measures 60 × 34 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chameleon mesh node?

5 components, from 5 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 Chameleon mesh node design files?

From the MetaStrawman/chameleon-mesh-node 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 Chameleon mesh node design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Chameleon mesh node 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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