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Mowi

septentrio-gnss·mowi·mowi/mowi.kicad_pcb

Mowi PCB layout, top view — open source ESP32 board by septentrio-gnss
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About the Mowi PCB

Mowi is an open source ESP32 PCB design by septentrio-gnss, published on GitHub. It is a 6-layer board measuring 70 × 47.5 mm, with 248 components from 73 distinct parts.

Its main chip is the ESP32-WROVER-IE/E, from the ESP32 family. Other key parts include the SN74LVC2T45DCU, SN74AUP1T97DCK, FEMCxxxGTT, USB2512B-I/M2 and USBLC6-2P6. By type, the board carries 88 resistors, 83 capacitors, 23 ICs, 21 diodes, 14 connectors and 9 inductors.

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

From the project

Mowi is an Open Source hardware project that combines a compact Septentrio's GNSS receiver mosaic with a wireless ESP32 Wrover module

Author: Filip Geib, Maintainer: septentrio-gnss Website: https://github.com/septentrio-gnss/mowi License: CC BY-SA 4.0 & OSHW Definition 1.0

Mowi is an Open Source hardware project that combines a compact Septentrio's GNSS receiver mosaic with a wireless ESP32 Wrover module. This extension enables mosaic to access wireless internet, receive remote commands, or use real-time corrections. The communication between the mosaic and the ESP is provided throughout a standard 802.3 Ethernet link. In-build USB HUB allows a user to connect to mowi with a single USB cable while accessing both the…

Mowi, from the project README
From the project README

Main components on the Mowi

ESP32-WROVER-IE/ESN74LVC2T45DCUSN74AUP1T97DCKFEMCxxxGTTUSB2512B-I/M2USBLC6-2P6CP2102N-A02-GQFN24TPS25210ARPWRTPS630250RNCMCP1642D-50SN74LVC1G32DCKSN74LVC1G08DCKKSZ8041NLImosaic X5/Sx/T/H

Mowi bill of materials (BOM)

248 components, 73 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROVER-IE/E
U1
6
SN74LVC2T45DCU
U2, U13, U14, U15, U18, U20
1
SN74AUP1T97DCK
U3
1
FEMCxxxGTT
U4
1
USB2512B-I/M2
U5
1
USBLC6-2P6
U6
1
CP2102N-A02-GQFN24
U7
1
TPS25210ARPWR
U8
1
TPS630250RNC
U9
1
MCP1642D-50
U10
2
SN74LVC1G32DCK
U11, U16
3
SN74LVC1G08DCK
U12, U17, U19
2
KSZ8041NLI
U21, U22
1
mosaic X5/Sx/T/H
U23
5
BSS138PW
Q1, Q2, Q3, Q4, Q5
1
EMH3T2R
Q6
1
XRCGB24M000F2P00R0
Y1
1
1909763-1
J1
1
132134
J2
2
MMCX-J-P-H-RA-TH1
J3, J5
Show 53 more
QtyPartRefs
2
1909763-1 DNS
J4, J6
1
47346-1001
J7
2
DNS
J8, J10
3
SM06B-GHS-TB(LF)(SN)
J9, J11, J14
1
DF40HC(3.5)-30DS-0.4V(51)
J12
1
DF40C-60DP-0.4V(51)
J13
1
CAS-D20B1
SW1
2
PTS636 SK25F SMTR LFS
SW2, SW3
1
SESD0402X1BN-0010-098
D1
4
155124GS73200
D2, D3, D4, D5
2
155124BS73200
D6, D7
5
PMEG3050EP,115
D8, D9, D10, D11, D12
3
PESD5V0L5UF,115
D13, D14, D17
4
PESD0402-140
D15, D18, D19, D21
2
PESD3V3L4UF,115
D16, D20
1
MPZ1608R391AT
FB1
3
BLM18BD601SN1D
FB2, FB3, FB4
2
744786139A
L1, L2
1
DLP31SN121ML2
L3
1
1277AS-H-1R0M=P2
L4
1
1277AS-H-4R7M=P2
L5
7
22u
C1, C2, C29, C33, C44, C45, C46
42
100n
C3, C4, C5, C6, C8, C9, C10, C13 +34
4
1u
C7, C14, C62, C63
2
2u2
C11, C15
7
10u
C12, C42, C43, C66, C67, C70, C71
8
10n
C17, C22, C25, C26, C27, C28, C30, C31
2
18p
C18, C19
3
4u7
C20, C23, C34
2
DNS
C40, C41
2
100p
C74, C75
4
100n
C76, C77, C78, C79
12
10k
R1, R4, R5, R7, R8, R11, R12, R44 +4
5
4k7
R2, R3, R71, R72, R78
7
1k
R6, R19, R22, R24, R28, R30, R46
6
0
R9, R10, R13, R15, R55, R67
2
0 DNS
R14, R16
6
5.6
R17, R18, R21, R23, R27, R29
4
1M
R20, R25, R26, R31
18
100k
R32, R33, R34, R35, R36, R37, R38, R51 +10
1
12k
R39
4
10k DNS
R40, R41, R42, R43
1
470k
R48
1
383k
R49
1
1k54
R50
1
80k6
R52
3
DNS
R53, R56, R68
1
47k
R54
1
560k
R57
1
180k
R58
3
33
R74, R75, R76
2
6k49
R79, R80
8
49.9
R81, R82, R83, R84, R85, R86, R87, R88

Mowi design files

The KiCad project lives in the septentrio-gnss/mowi repository on GitHub; these links point at the commit this page was built from.

Mowi: common questions

What microcontroller does the Mowi use?

The Mowi is built around the ESP32-WROVER-IE/E, from the ESP32 family.

How big is the Mowi PCB?

The Mowi measures 70 × 47.5 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Mowi?

248 components, from 73 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 Mowi design files?

From the septentrio-gnss/mowi repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Mowi design in my own project?

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

Can I test firmware for the Mowi 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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