Steven Gardner

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Description

ESP32 DIN Rail RS485, Modbus and RGB LED Controller

A PCB layout designed to fit inside a CamdenBoss CNMB-2-2 DIN rail enclosure. Has a 5 to 35V input voltage range, RS485 transceiver and 3 open-collector transistor outputs for driving things like fans, RGB LEDs or other items.

The ESP32 can be programmed with custom code, or flashed with ESPhome to configure Modbus interfaces and LED controllers.

Please see my YouTube video on this design at https://www.youtube.com/sdgelectronics

Schematic and Layout

Schematic

esp32_din_schematic.pdf

Download Gerbers Download BOM(Bill of materials)

Dec 19,2023

12,438 views

ESP32 DIN Rail RS485, Modbus and RGB LED Controller

A DIN rail mountable ESP32 device with RS485 Interface and open collector outputs

12438

9.75 (1)

Published: Dec 19,2023

Standard PCB

Download Gerber file 91

BOM(Bill of materials)

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File Last Updated: 2026/03/26 (GMT+8)

File update record

2026-03-2609:28:15

Centroid file is updated.

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