HardLabs

Meshthingy

luthfai·meshthingy

Meshthingy PCB layout, top view — open source ESP32 board by luthfai

About the Meshthingy PCB

Meshthingy is an open source ESP32 PCB design by luthfai, published on GitHub. It is a 2-layer board measuring 71 × 46 mm, with 76 components from 36 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the DM-OLED096-636, ATGM336H-5N71, TPS62046DGQR, HT-RA62-HF and TMHU26. By type, the board carries 24 resistors, 23 capacitors, 10 ICs, 8 diodes, 4 transistors and 4 connectors.

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

From the project

Phones stop working the moment you leave coverage. meshthingy doesn't need coverage — it is the network.

Phones stop working the moment you leave coverage. meshthingy doesn't need coverage — it is the network.

Each board is one node in a self-healing Meshtastic mesh. Nodes talk directly to each other over licence-free LoRa radio, and every node automatically relays traffic for its neighbours. Two units give you a private long-range walkie-talkie for text; a handful scattered across a valley, a campsite, a ridgeline, or a city block give everyone in that area a shared messaging network that keeps working when nothing else does.

Meshthingy, from the project README
From the project README

Main components on the Meshthingy

DM-OLED096-636ATGM336H-5N71TPS62046DGQRHT-RA62-HFTMHU26BQ24072RGTRESP32-S3-WROOM-1AT24CS32-XHM-TBME280LIS3DSHTR

Meshthingy bill of materials (BOM)

76 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
DM-OLED096-636
OLED096
Display Module
U1
1
ATGM336H-5N71
ATGM336H
Zhongke Microelectronics
U2
1
TPS62046DGQR
Texas Instruments
U3
1
HT-RA62-HF
HT-RA62
Heltec Automation
U4
1
TMHU26
U5
1
BQ24072RGTR
BQ24072RGT
Texas Instruments
U6
1
ESP32-S3-WROOM-1
Espressif
U7
1
AT24CS32-XHM-T
AT24C32A
Microchip
U8
1
BME280
Bosch Sensortec
U9
1
LIS3DSHTR
STMicroelectronics
U10
2
SI2302
Q1, Q4
1
MMBT3906
Q2
1
MMBT3904
Q3
1
GT-USB-7010ASV
USB_C_16P
G-Switch
J1
1
S2B-PH-K-S
BATT_Con
JST
J2
1
U.FL-R-SMT-1
Conn_Coaxial
Hirose
J3
1
132289
SMA_Con
Amphenol RF
J4
1
SMT-0927-S-14-R
Buzzer 8.5x8.5x3
PUI Audio
LS1
5
1N4148WS
D1, D3, D4, D6, D7
1
LED
D2
Show 16 more
QtyPartRefs
2
1N5819WS
D5, D9
1
47NH
47nH
L1
1
6.8UH
6.8uH
L2
10
100N
100n
C1, C7, C8, C10, C11, C19, C21, C22 +2
5
10U
10u
C2, C9, C14, C18, C20
2
4U7
4u7
C3, C5
3
1u
C4, C6, C17
1
XH414H-IV01E
Seiko Instruments
C13
2
22U
22u
C16, C25
2
5K1
5k1
R1, R2
8
10K
10k
R3, R7, R8, R9, R11, R19, R20, R23
3
1k
R4, R22, R24
1
1K2
1k2
R5
2
47K
47k
R6, R14
4
4K7
4k7
R10, R12, R13, R21
4
100K
100k
R15, R16, R17, R18

Meshthingy design files

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

Meshthingy: common questions

What microcontroller does the Meshthingy use?

The Meshthingy is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Meshthingy PCB?

The Meshthingy measures 71 × 46 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Meshthingy?

76 components, from 36 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 Meshthingy design files?

From the luthfai/meshthingy 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 Meshthingy design in my own project?

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

Can I test firmware for the Meshthingy 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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