https://ianloke.com/categories/opinion/ Recent content in Opinion on Ian's World Hugo -- gohugo.io en ian@ianloke.com (Ian Loke) ian@ianloke.com (Ian Loke) © 2026 Ian Loke Thu, 16 Apr 2026 16:00:00 +0800 https://ianloke.com/posts/the-dependency-problem-in-ot/ Thu, 16 Apr 2026 16:00:00 +0800 ian@ianloke.com (Ian Loke) https://ianloke.com/posts/the-dependency-problem-in-ot/ <p>I ran <code>npm install</code> on a Raspberry Pi 4, the same one I&rsquo;d set up as an <a href="https://ianloke.com/posts/building-an-iot-edge-gateway-with-rpi/" >edge gateway with OPC UA and MQTT</a>, and watched the terminal scroll.</p> <p>Node-RED, plus three protocol modules for Siemens S7 PLCs, OPC UA, and Modbus. When it finished, I counted.</p>