Building a DIY 100MHz Logic Analyzer
designing a custom input stage using high-speed comparators and streaming captured frames directly into a fast RAM buffer.
Op-Amp Stability & Phase Margin Calculations
When designing high-speed analog circuits, op-amp stability is a paramount concern. An unstable amplifier will oscillate, injecting ...
High-Frequency PCB Routing Guidelines
Tips on trace impedance control, minimizing crosstalk on multi-layer RF boards, and proper ground plane stitching techniques.
Sonar Pulse Timing Captures
Notes on measuring sonar pulse timing, filtering noisy captures, and deciding what belongs in firmware versus post-processing.
FPGA Bring-Up Notes
Bringing up a custom FPGA board or soft-core microcontroller block requires structured verification: starting from clock distributio...
Why Did This Work?
A debugging note for the fixes that should not have worked, the measurements that proved they did, and the cleanup required after th...
LALU
Logic and arithmetic experiments moving from schematic intent to working digital behavior.
Sonar Project
Distance sensing, timing captures, signal cleanup, and measurement notes from the bench.
Bow and Arrow
A physical build with embedded control ideas, sensor experiments, and test logs.
MCU Debug Checklist
Bring-up checks for power rails, clocks, boot pins, serial output, and the usual suspects.
FRC Controls
Robot control loops, sensor integration, driver feedback, and field-tested software patterns.
CAD Mechanism Sketches
Early mechanical layouts, packaging constraints, mounting ideas, and fabrication notes.
Sensor Mounts
Brackets and placement experiments for distance sensors, wiring strain relief, and repeatable alignment.
Preset
Speed
Noise