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3D Model Industrial KiCad 10 PCB Design — ESP32-S3 24V Opto-Isolated I/O, 4-20mA ADC & RS-485 Modbus

ESP32-S3 controller board featuring 24 VDC opto-isolated digital inputs (PC817), 16-bit 4–20 mA analog current loop receiver (ADS1115 + TVS protection), isolated RS-485 Modbus RTU transceiver with surge

Designer thomasu1

Electronics Hardware Engineer | PCB Design, Analog Circuits & Power Electronics

and signal conditioning DC/DC converters, voltage regulators, and power supply design Industrial 4–20 mA interfaces and sensor electronics ESP32-based hardware and embedded system integration Schematic

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