HARDWARE PROJECTS
Mini-CNC Machine with GRBL Controller
Built using aluminum extrusion, stepper motors, a 10k rpm spindle motor, and an open-source GRBL control board for less than $200 total.
GPS Speedometer for Boat/Bike
Started with Arduino Uno for prototyping, then migrated to standalone ATMEGA328P with NEO-6M GPS Module and OLED display.
Class A Audio Amplifier
A simple Class A audio amplifier circuit using 2x BC337 transistors with chemically etched PCB and SMT components.
DJI Phantom Drone Repair
Fixed a DJI Phantom drone that had lost its live video feed by re-flashing firmware via JTAG.
GRBL CNC Controller Firmware Flashing
Instructables tutorial on flashing firmware onto GRBL CNC controller boards for recovery.
ArmaChat: LoRa Text Messenger
A standalone LoRa-based text messenger for off-grid communications with mesh networking.
Heathkit 500W HF Amplifier Rebuild
Restoration and rebuild of a classic Heathkit 500W HF tube amplifier.
Electronics Workbench
My electronics workbench setup for hardware projects, PCB work, and RF experimentation.
RADIO / RF PROJECTS
uSDX: Open Source HF Radio
A credit card-sized fully operational HF radio capable of modulating SSB and CW with Class E amplifier design.
NanoVNA for RF Analysis
Using the NanoVNA for antenna analysis, filter tuning, and RF circuit optimization.
Amateur Radio Station
HF/VHF/UHF operating position for SSB, digital modes, and CW communications.
RTL-SDR Projects
Software Defined Radio experiments including ADS-B, weather satellites, and SSTV from ISS.
Stealth HF Antenna
Multi-band end-fed wire antenna designed for HOA-restricted areas.
VHF/UHF Repeater Network
Running linked VHF/UHF repeaters with commercial hardware and duplexers.
CHEMISTRY PROJECTS
Copper Sulfate Synthesis
Electrochemical synthesis and crystal growing of CuSO4·5H2O from copper electrodes and sulfuric acid.
Ferric Chloride Synthesis
Production of FeCl3 solution for use as a PCB etchant in electronics fabrication.
Sodium Hydroxide Electrolysis
Laboratory-scale chloralkali process producing NaOH, H2, and Cl2 via electrolysis.
Electroplating Experiments
Metal deposition experiments including copper, nickel, zinc, and tin plating.
Chemical PCB Etching
Home PCB fabrication using ferric chloride, cupric chloride, and sodium persulfate etchants.
Lab Equipment Setup
Home chemistry lab setup for electrochemistry, synthesis, and materials science experiments.
SMILES/IUPAC Translator CLI
Interactive CLI for STOUT, an organic chemistry SMILES/IUPAC name translator.
Degrees of Unsaturation Calculator
Calculator for determining DBE (Double Bond Equivalent) from molecular formulas.