Building things
that actually work.

A lightweight, checksum-verified command protocol over UART between an ESP32 and a BeagleBone Black running Debian 7.

An interactive browser-based tool that visualizes UART binary packets as logic analyzer waveforms — start bit, data bits (LSB first), parity, and stop bit — with live Arduino code generation.

A real-time IoT system streaming TMP36 sensor data to HiveMQ cloud via MQTT, with remote LED control commands routed over I2C to a K64 Freedom Board.

A complete walkthrough for configuring SocketCAN on BeagleBone Black — upgrading from Debian 7.8 to Debian 13.5, loading device tree overlays, and verifying CAN communication with can-utils.

A detailed signal-level analysis of CAN bus communication between ESP32 and BeagleBone Black — probe points, differential conversion, frame structure bit by bit, stuff bits, ACK detection, and CRC verification.

An interactive oscilloscope-styled calculator tying logic analyzer sample rate and sample count to CAN bus nominal and FD bitrates — watch the frame stretch live.

A comprehensive analysis of CAN bus arbitration mechanisms, collision detection, and prioritization strategies in multi-node communication scenarios.

Forcing a real arbitration event between two identical ESP32-C6 + MCP2515 nodes, and tuning timing/termination to suppress jitter on the shared CAN lines.

Migrating dual-board arbitration off MCP2515/SPI onto ESP32-C6's native TWAI controller — fixing a subtle alert-attribution bug and capturing the exact bit where the losing node backs off.

A physical Hardware-in-the-Loop test bench where BeagleBone Black acts as HIL master sending automotive test commands over CAN bus, and ESP32 simulates an ECU responding in real time. All 16 test scenarios passed with zero CRC errors, verified with Saleae Logic Analyzer at 500 kbps.

A full technical report documenting the Debian 13.5 installation on BeagleBone Black, OS migration from SD card to eMMC, CAN Bus configuration with SN65HVD230, board comparison vs Raspberry Pi, and storage considerations.

A step-by-step deployment workflow reference for SSH/PuTTY sessions on BeagleBone Black — covers SD card setup, eMMC flashing via USB, CAN bus configuration, and USB driver troubleshooting, with one-click copy for every command.