Industry 4.0 × Software

Where industrial automation
meets modern software.

Technical deep-dives on SCADA, PLCs, IIoT, OPC-UA — written by a developer who builds both sides.

Featured·

Why I Built This Blog with Next.js Instead of a No-Code Tool

ISR, GraphQL, Redis cache, and a Contentful webhook that auto-publishes to Hashnode. The technical decisions behind Setpoint — and what I learned building it.

April 11, 2026·4 min read

Read

Latest

View all articles

SCADA

SCADA vs MES vs ERP: Where Your Data Lives at Each Layer

The ISA-95 model describes three layers of industrial software. Most developers only touch one of them — and misunderstand the other two. A practical breakdown.

Apr 2, 20265 min

OPC-UA SCADA

What is OPC-UA and Why Every SCADA Developer Should Know It

OPC-UA is the protocol that finally gave industrial machines a common language. If you work with SCADA or IIoT, this is the spec worth understanding.

Mar 14, 20266 min

IIoT Next.js

Building a Real-Time Sensor Dashboard with Next.js and MQTT

WebSockets, server-sent events, or polling? For industrial sensor data, the answer depends on your update frequency and failure tolerance. Here's the full stack.

Mar 6, 20269 min

IIoT Modbus

MQTT Over Modbus: Why Modern IIoT Chose a Different Protocol

Modbus was designed for serial cables in 1979. MQTT was designed for unreliable networks. Understanding the difference explains half of modern IIoT architecture.

Feb 21, 20268 min

PLC Python Modbus

Reading a PLC from Python: Modbus TCP in Practice

A working example: poll a Siemens S7 register every 500ms from a Python script. The bridge between the shop floor and your software stack.

Feb 12, 20267 min

PLC

Timers and Counters in PLCs: The Building Blocks of Process Control

TON, TOF, CTU — three instructions that control most of industrial automation. Here's how they work and when to use each one.

Feb 6, 20266 min

Where industrial automationmeets modern software.