HardLabs

Mesh phone

JeremyLakeyJr·mesh-phone·hardware/rev-f/mesh-phone.kicad_pcb

Mesh phone PCB layout, top view — open source ESP32 board by JeremyLakeyJr
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About the Mesh phone PCB

Mesh phone is an open source ESP32 PCB design by JeremyLakeyJr, published on GitHub. It is a 2-layer board measuring 87 × 154 mm, with 95 components from 80 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the PCF8574T-keypad-expander, TP4056-charger, DW01A-protection, 3V3-LDO and MAX17048-fuel-gauge. By type, the board carries 21 resistors, 19 switches, 17 diodes, 13 connectors, 12 capacitors and 10 ICs.

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

From the project

OWASSO-1 DIY ESP32-S3 phone KiCad revF PCB project

Open mesh-phone.kicadpro in this directory. The project in ../main/` is the preserved original, not this corrected revision.

- MAX-M10S GPS with passive-antenna U.FL, UART, PPS and bypass capacitors. - Rear keyed 10-pin JST-GH expansion interface, with a current-limited 3.3 V supply and shared SPI/I²C. Switch off and disconnect USB before swapping. - MCU EN/BOOT support, usable SPI pin assignments, keypad expander pin-order corrections, display controls and I²C pull-ups. - Removal of the switch connection that directly joined USB 5 V to the battery. - Reconciled schematic/PCB pad contracts…

Main components on the Mesh phone

ESP32-S3-WROOM-1-N16R8PCF8574T-keypad-expanderTP4056-chargerDW01A-protection3V3-LDOMAX17048-fuel-gaugeTSOP38238-IR-receiverTPS61023DRLR-5V-BOOSTMAX-M10S-00B-01TPS2553DBVR

Mesh phone bill of materials (BOM)

95 components, 80 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1-N16R8
U1
1
PCF8574T-keypad-expander
U2
1
TP4056-charger
U3
1
DW01A-protection
U4
1
3V3-LDO
U5
1
MAX17048-fuel-gauge
U6
1
TSOP38238-IR-receiver
U7
1
TPS61023DRLR-5V-BOOST
U8
1
MAX-M10S-00B-01
U9
1
TPS2553DBVR
U10
1
FS8205A-PROTECTION-FET
Q1
1
A7670E-LASE-23P-12+11
J1
1
CC1101-module
J2
1
Ra-01SH-SX1262-915MHz
J3
1
PN532-NFC-module
J4
1
RDM6300-RFID-module
J5
1
Pimoroni-PIM447-Trackball
J6
1
Waveshare-3.5in-18pin-FPC
J7
1
MicroSD-SPI
J9
1
Nano-SIM
J10
Show 60 more
QtyPartRefs
1
LiPo-BATTERY-MICRO-JST-1.25
J13
1
LoRa-UFL-Antenna
J14
1
U.FL-R-SMT-1(10)
GPS PASSIVE ANTENNA
J15
1
BM10B-GHS-TBT(LF)(SN)
REAR EXPANSION - POWER OFF TO SWAP
J16
1
Power-switch
SW1
1
KEY-1
SW2
1
KEY-2
SW3
1
KEY-3
SW4
1
KEY-4
SW5
1
KEY-5
SW6
1
KEY-6
SW7
1
KEY-7
SW8
1
KEY-8
SW9
1
KEY-9
SW10
1
KEY-10
SW11
1
KEY-11
SW12
1
KEY-12
SW13
1
KEY-13
SW14
1
KEY-14
SW15
1
KEY-15
SW16
1
KEY-16
SW17
1
BOOT
SW18
1
RESET
SW19
1
USB-C-charge-and-data
USB1
1
TSAL6200-IR-LED
D1
1
1N4148W-KEY-1
D2
1
1N4148W-KEY-2
D3
1
1N4148W-KEY-3
D4
1
1N4148W-KEY-4
D5
1
1N4148W-KEY-5
D6
1
1N4148W-KEY-6
D7
1
1N4148W-KEY-7
D8
1
1N4148W-KEY-8
D9
1
1N4148W-KEY-9
D10
1
1N4148W-KEY-10
D11
1
1N4148W-KEY-11
D12
1
1N4148W-KEY-12
D13
1
1N4148W-KEY-13
D14
1
1N4148W-KEY-14
D15
1
1N4148W-KEY-15
D16
1
1N4148W-KEY-16
D17
1
1uH-BOOST-INDUCTOR
L1
1
1000uF-MODEM-BULK
C1
1
100uF-VBAT-BULK
C2
1
10uF-3V3-BULK
C3
1
10uF-USB-IN
C4
2
10uF 10V X5R
C5, C9
2
100nF 10V X7R
C6, C10
2
1uF 10V X7R
C7, C8
2
GRM155R71C104KA88D
100nF 10V X7R
C11, C12
1
1.2k-TP4056-PROG
R1
1
180k-BOOST-FB
R2
1
27k-BOOST-FB
R3
1
5.1k-USB-C-CC1-Rd
R4
1
5.1k-USB-C-CC2-Rd
R5
2
1k
R6, R7
4
10k
R8, R9, R12, R13
2
4.7k
R10, R11
1
232k 1%
R14
7
33
R15, R16, R17, R18, R19, R20, R21

Mesh phone design files

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

Mesh phone: common questions

What microcontroller does the Mesh phone use?

The Mesh phone is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.

How big is the Mesh phone PCB?

The Mesh phone measures 87 × 154 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mesh phone?

95 components, from 80 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 Mesh phone design files?

From the JeremyLakeyJr/mesh-phone 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 Mesh phone design in my own project?

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

Can I test firmware for the Mesh phone 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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