Production systems - actively deployed

Real-Time Facility Monitoringfor Factories & Workshops

From sensor design to deployed systems - end-to-end industrial IoT for South African factories and workshops. Real-time visibility into equipment conditions, condition monitoring across critical parameters, and automatic alerts before failures occur.

Custom PCB design, STM32/ESP32 firmware, 4-20mA sensor integration, and real-time dashboards. IIoT solutions for Johannesburg and across South Africa - built for harsh industrial environments, delivered end-to-end.

Johannesburg, South Africa - Serving globally
Deployed
12 Monitoring PointsProduction pressure system at iMining
Reliable
99.2% UptimeContinuous operation in harsh conditions
Custom Firmware
STM32 / ESP32Embedded C/C++ with real-time acquisition
Facility Monitoring Dashboard
Live system preview
Live
Sensor Feed
24/7
Continuous data acquisition
Alerts
<5 sec
Threshold breach notification
Embedded Core
STM32
Real-time signal processing
Monitoring OverviewSample facility snapshot
Pressure Line 01
Normal
6.2 bar
Hydraulic Loop
Stable
4.8 bar
Temp Zone A
Within spec
42°C
Alert Latency
Active
<5 sec
System Path
Sensor → PCB → MCU → Network → Dashboard → Alerts
Deployment Focus
Pressure, temperature, vibration, current, and facility condition monitoring.
Case Study
iMining - 99.2% uptime
Alerting
SMS / Dashboard / WhatsApp

Wits University

BSc (Hons) Electrical & Information Engineering

SAIEE Student Member

South African Institute of Electrical Engineers

Production-Deployed Systems

Actively running hardware - not prototypes

Mining Sector Deployment

iMining (Pty) Ltd - active production system

Core Engineering Services

Custom sensor systems, firmware, and dashboards built for factory and workshop environments. Every system is engineer-designed, tested under industrial conditions, and deployed hands-on.

Facility Condition Monitoring
Featured

Custom hardware and firmware for continuous, real-time facility condition monitoring. From sensor selection and PCB design to firmware development and field deployment - we own the full stack.

What You Get:
  • Detect facility issues before they become failures
  • Replace manual checks with continuous 24/7 monitoring
  • Receive real-time alerts when readings go out of spec
  • Build a historical baseline for predictive maintenance
What's Included:
  • 4-20mA sensor selection and interfacing
  • Custom PCB design (Autodesk Eagle) - signal conditioning & enclosures
  • STM32/ESP32 firmware development in C/C++ - interrupt-driven, <100ms latency
  • Real-time data acquisition and WebSocket streaming
  • Factory calibration + field validation and deployment
  • Ongoing technical support and maintenance
Technologies:
STM32ESP32Eagle PCBC/C++4-20mA SensorsUARTRS485WebSockets
Starting at
Quote on request
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Real-Time Monitoring Dashboards

Operational dashboards that turn raw sensor data into clear, actionable intelligence. Real-time facility status, historical trends, and configurable alerts - accessible from the shop floor or the office.

What You Get:
  • See facility status at a glance - anywhere, any device
  • Identify trends and anomalies before they escalate
  • Configurable alert thresholds per sensor or facility zone
Technologies:
Next.jsReactTypeScriptTailwind CSSNode.jsPostgreSQLTimescaleDB
Starting at
Quote on request
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Sensor Networks & Multi-Site Monitoring

Deploy monitoring across multiple facility zones or sites from a single dashboard. Scalable wireless sensor networks with secure cloud data ingestion.

What You Get:
  • Monitor multiple facility zones from one centralised dashboard
  • Unified visibility across separate facilities or production lines
  • Cost-effective scaling - add sensors without rebuilding infrastructure
Technologies:
ESP32STM32MQTTWiFiRS485Cloud APIs
Starting at
Quote on request
Get a Quote
Production Deployment

Proof Point: iMining Facility Monitoring System

Deployed Dec 2023 - actively running. A complete hardware-to-dashboard facility monitoring system built from scratch: custom PCB, STM32 firmware, and a real-time web dashboard.

Instant
Detection Speed
vs. 4-hour manual cycles
99.2%
System Uptime
6 months continuous operation
12
Monitoring Points
4-20mA pressure sensors
3
Anomalies Caught
Zero false positives in 6 months
What Was Deployed
HardwareCustom PCB (Autodesk Eagle) with 4-20mA signal conditioning and STM32 integration
FirmwareC firmware - interrupt-driven ADC sampling, threshold detection, WebSocket streaming
DashboardReact-based real-time dashboard with live gauges, historical trends, and configurable alerts
EnvironmentActive industrial facility - dust, heat, vibration. IP-rated enclosures, ruggedized wiring

"Nduvho built exactly what we needed - a reliable monitoring system that works in our harsh environment. The system caught a pressure anomaly that our manual checks would have missed. Professional, technically solid, and delivered on time."

Operations Manager - iMining (Pty) Ltd
View Full Case StudyIncludes system architecture, technical specs & deployment details
Follow the engineering work

See the systems being built

Nduvho posts about embedded systems design, PCB development, and the realities of deploying IIoT in South African industrial facilities - direct from the workshop floor.

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What Our Clients Say

"Nduvho built exactly what we needed - real-time pressure monitoring that tells us when something is about to fail, not after it already has. The system has been running without issues since deployment."

Operations Manager

iMining (Pty) Ltd

Why Selah

What Sets Us Apart

Facility managers need systems that work reliably in harsh conditions, not consulting decks. Here is what you actually get when you work with Selah.

Engineer-Led, Not Agency-Run

Every system is designed, built, and deployed by Nduvho - a Wits Electrical & Information Engineering student specialising in embedded systems and PCB design. You deal directly with the engineer responsible for your hardware.

No account managers. No outsourcing.
Production Systems, Not Prototypes

The iMining pressure monitoring system has been running continuously since 2024 at 99.2% uptime. We do not pitch concepts - we deploy working hardware into real industrial environments and stand behind it.

Shipped. Running. Measurable.
Built for Factory & Workshop Conditions

Our hardware is designed for dust, heat, vibration, and continuous operation - not lab environments. Sensor selection, PCB layout, enclosure design, and firmware are all optimised for the realities of a factory floor or workshop.

IP-rated. Noise-filtered. Field-validated.
Hands-On Deployment & Support

We do not drop a box of hardware and disappear. Installation, calibration, field validation, operator training, and ongoing maintenance are part of every engagement. If something needs a site visit, we show up.

Site visits. Ongoing support. Real accountability.

Ready to Add Real-Time Facility Monitoring to Your Operations?

Tell us about your facility, your environment, and what you need to measure. We'll scope a system that works - sensors, firmware, dashboard, and deployment.

No obligation. Response within 24 hours.