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InduLink-485

8aChristian·InduLink-485

InduLink-485 PCB layout, top view — open source ESP32 board by 8aChristian
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About the InduLink-485 PCB

InduLink-485 is an open source ESP32 PCB design by 8aChristian, published on GitHub under the MIT license. It is a 4-layer board measuring 115 × 75 mm, with 20 components from 19 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N8R8, from the ESP32 family. Other key parts include the SIM7080G, LMR14030SDDAR, AP2112K-3.3TRG1, ISO7721DWR and B0505S-1WR3. By type, the board carries 7 ICs, 5 diodes, 4 connectors, 2 capacitors, 1 fuse and 1 inductor.

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

From the project

InduLink-485 is a rugged, industrial-grade IoT gateway and telemetry edge node designed for mission-critical industrial automation, SCADA networks, PLC monitoring, and remote field deployments. Built around the high-performance Espressif ESP32-S3 dual-core microcontroller and the

InduLink-485 is a rugged, industrial-grade IoT gateway and telemetry edge node designed for mission-critical industrial automation, SCADA networks, PLC monitoring, and remote field deployments. Built around the high-performance Espressif ESP32-S3 dual-core microcontroller and the SIMCom SIM7080G multi-band cellular modem, it delivers robust, isolated bidirectional RS-485 / Modbus RTU communication with dual-link connectivity over global LTE-M, NB-IoT, Wi-Fi, and Bluetooth Low Energy.

InduLink-485, from the project README
From the project README

Main components on the InduLink-485

ESP32-S3-WROOM-1-N8R8SIM7080GLMR14030SDDARAP2112K-3.3TRG1ISO7721DWRB0505S-1WR3MAX13487EESA+

InduLink-485 bill of materials (BOM)

20 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1-N8R8
Espressif Systems
U1
1
SIM7080G
SIMCom Wireless
U2
1
LMR14030SDDAR
Texas Instruments
U3
1
AP2112K-3.3TRG1
Diodes Incorporated
U4
1
ISO7721DWR
Texas Instruments
U5
1
B0505S-1WR3
Mornsun
U6
1
MAX13487EESA+
Analog Devices / Maxim
U7
1
1715721
MKDS_1.5_2_5.08
Phoenix Contact
J1
1
1715734
RS485_PORT
Phoenix Contact
J2
1
U.FL-R-SMT-1
LTE_U.FL
Hirose Electric
J4
1
U.FL-R-SMT-1
GNSS_U.FL
Hirose Electric
J5
1
MF-MSMF075-2
Bourns
F1
1
SMCJ33CA
Littelfuse / Vishay
D1
1
B240A-13-F
B240A
Diodes Incorporated
D2
1
SM712.TCT
Semtech
D3
2
CD0402-T05C
Bourns
D4, D5
1
744314101
10uH_3.5A
Wurth Elektronik
L1
1
6TPB1000M
1000uF_6.3V_POSCAP
Panasonic
C3
1
GRM31CR61A107ME15L
100uF_10V
Murata / TDK
C4

InduLink-485 design files

The KiCad project lives in the 8aChristian/InduLink-485 repository on GitHub; these links point at the commit this page was built from.

InduLink-485: common questions

What microcontroller does the InduLink-485 use?

The InduLink-485 is built around the ESP32-S3-WROOM-1-N8R8, from the ESP32 family.

How big is the InduLink-485 PCB?

The InduLink-485 measures 115 × 75 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the InduLink-485?

20 components, from 19 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 InduLink-485 design files?

From the 8aChristian/InduLink-485 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 InduLink-485 design in my own project?

Yes, under the terms of its MIT license, which 8aChristian chose for the repository.

Can I test firmware for the InduLink-485 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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