Most IoT profiles show a wall of logos. Here is the part that matters — the layer where things break.
- Firmware that survives the field. ESP32 and STM32 in bare-metal C/C++, with OTA update paths, watchdog recovery and web-server config UIs — because a device you have to drive to is a device that stays broken.
- Protocol bridges. Pulling data out of Modbus/RS-485 equipment, variable-frequency drives and legacy controllers, and getting it somewhere useful over MQTT, REST or WebSocket.
- LoRa sensor networks. Multi-node telemetry where there is no Wi-Fi and no power outlet — RFM95 links, central collection nodes, optional uplink to the cloud.
- Industrial telemetry. SNMP v2 agents on microcontrollers, NMEA/GPS ingestion, and IEC 60870-5-104 telecontrol for SCADA-side integration.
- Operator dashboards. Flask and React/Next.js front-ends for live data — designed for the person standing in front of the machine, not for a screenshot.
Every repository below is public. Star counts and languages are live from GitHub.
| Project | What it does | Stack | |
|---|---|---|---|
| 01 | esp32-ota-web-server |
Over-the-air firmware updates served from a web interface hosted on the ESP32 itself. Upload a binary, the device reboots into it. The pattern I reuse in every deployed product. | C++ ESP32 OTA |
| 02 | phpserver-webserver-esp32 |
Multi-sensor environmental station — DHT21 temperature/humidity, pulse sensor and MQ135 gas sensing — with the readings served from an on-device web interface. | ESP32 DHT21 MQ135 |
| 03 | heathguard |
Environmental and health monitoring platform. Sensor acquisition, thresholds, and an operator-facing view of the room the device is actually sitting in. | ESP32 Sensors |
| 04 | talking-skeleton |
Animated anatomical model: per-organ LEDs, DFPlayer Mini audio narration and a moving jaw, driven over Bluetooth and RF, with a custom Android controller app. | Kotlin ESP32 DFPlayer |
| 05 | LoRa-ESP32-Communication |
Reference implementation for LoRa links on ESP32 — setup, framing, send and receive. The starting point for the sensor networks that came after it. | C++ LoRa ESP32 |
| 06 | Lora-Esp32-ThingSpeak |
Multi-node LoRa network where several transmitters report temperature and humidity to a central server, which processes the frames and optionally uplinks them to ThingSpeak. | C++ LoRa ThingSpeak |
| 07 | esp32_snmp |
SNMP v2 agent running on an ESP32 over both Ethernet (ENC28J60) and Wi-Fi, so a microcontroller shows up as a first-class node in network monitoring. | C++ SNMP v2 ENC28J60 |
| 08 | Shihlin-drive |
RS-485 communications with a Shihlin SH040 7.5 kW variable-frequency drive — reading parameters and writing setpoints from a controller. Real industrial equipment, real register map. | RS-485 Modbus VFD |
| 09 | binary-encoding-visualization |
Python GUI that visualises line-coding schemes side by side: Unipolar, Polar NRZ-L/NRZ-I, Polar RZ, Manchester, Differential Manchester and AMI. Built to make a textbook chapter behave. | Python Tkinter |
| 10 | ESP32-Smart-Touch-Control-System |
Touch-sensing control with scheduling and real-time state synchronisation between the hardware and a responsive web UI — including dark mode, because of course. | ESP32 Touch Web UI |
More repositories worth a look
| Repository | Why it exists |
|---|---|
| ESP32-NMEA-Generator-Decoder-Mqtt | Generates and parses NMEA sentences on-device, published over MQTT |
| IoT-Temperature-and-Humidity-Monitor-with-ESP32 | DHT21 monitoring with lamp control and CSV export from the browser |
| ESP32-BT-TempRelay | Bluetooth telemetry plus relay control, no network required |
| SmartCool-IoT | ESP32 evaporative-cooler controller with touch input and MQTT |
| esp32-ota-update-example | Minimal OTA update example, kept small on purpose |
| enc28j60-esp32-library | Fixed and stabilised ENC28J60 Ethernet driver for ESP32 |
| Face-Recognition-Attendance-System | OpenCV + face_recognition attendance logging to CSV |
| Stock-Price-Prediction-using-SimpleRNN | Recurrent network for time-series prediction |
Contribution graph
Open to: embedded firmware · industrial automation · Modbus/SCADA integration · LoRa sensor networks · IoT product builds
