Techincal Notes

Communication | Embedded | Python | TCP-IP | Techincal Notes

Using a PmodESP32 WiFi Module with AT Commands
Byadmin-hamid April 17, 2026April 17, 2026

Goal The goal is to start using a Digilent Pmod ESP32 module with AT commands. Hardware Requirements: Software Requirements: Challenge The default Firmware on the PmodESP32 module uses USRT0 for logging, and listens to UART1 for AT commands. But UART1 is not exposed to Pmod pins, so you cannot work with it until you change…

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Git | Linux | Python | System | Techincal Notes

PC → GitHub → Raspberry Pi: Python Project Deployment Workflow
Byadmin-hamid April 16, 2026April 17, 2026

Goal Develop a project on a PC and store it in a Git repository (e.g. GitHub).Deploy it on a Raspberry Pi by cloning the repository, installing dependencies, and running the application.Keep a clean and repeatable workflow for updating the project from PC to Pi. Intended workflow PC (development) → GitHub repository (source of truth) →…

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Networking | Python | TCP-IP

Raspberry Pi Automatic Wi-Fi ↔ Hotspot Switching (NetworkManager)
Byadmin-hamid March 11, 2026March 20, 2026

Event-driven Wi-Fi ↔ hotspot switching on Raspberry Pi using NetworkManager. Automatically falls back to hotspot when no network is available while allowing manual hotspot override.

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Modbus | Teensy

ModBus Communication Protocol
Byadmin-hamid March 9, 2026

This is a nice template page.

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