📡 Engineering Blog

#4g

Real-world IoT guides, debugging stories, and engineering insights. No fluff — just what works in the field.

How to Choose a SIM Card for Industrial 4G IoT Deployments in India
Guides ·

How to Choose a SIM Card for Industrial 4G IoT Deployments in India

Choosing the right SIM and data plan for industrial IoT gateways in India. Airtel vs Jio vs BSNL, static IP, private APN, signal at remote sites — practical guide.

8 min read Read →
Monitoring VFDs Remotely via Modbus and 4G: Speed, Current, Faults — All in the Cloud
Guides ·

Monitoring VFDs Remotely via Modbus and 4G: Speed, Current, Faults — All in the Cloud

How to read VFD parameters — output frequency, current, motor RPM, fault codes — over RS485 Modbus RTU and push them to a cloud dashboard over 4G.

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How to Monitor Multiple Energy Meters Over 4G
Tutorials ·

How to Monitor Multiple Energy Meters Over 4G

Step-by-step guide to monitoring multiple energy meters remotely over 4G. RS485 bus setup, register mapping, and cloud dashboard configuration.

6 min read Read →
Connecting Modbus Devices to the Cloud Over 4G — Practical Guide with Selec EM2M
Tutorials ·

Connecting Modbus Devices to the Cloud Over 4G — Practical Guide with Selec EM2M

Wire a Selec EM2M energy meter to a 4G gateway over RS485, configure registers, and push data to cloud via MQTT. Full tutorial with wiring and debugging.

10 min read Read →