Teddy Yapo

tritiled. TritiLED: multi-year LED glow markers

serial-port-sdr. Experimental software-defined radio using a serial port

arduino-MLX90393. Arduino library for MLX90393 magnetometer sensor

sampling-scope-WIP. Work towards an open-source multi-GHz sampling oscilloscope design

image2eagle. Eagle image importer

maxima-circuits. Maxima functions for circuit calculations

gerber-renderer. 3D PCB renderer for checking gerber files before manufacture

oscilloscope-vector-display. Experimental vector display on oscilloscope using soundcard audio output

mw-voice-marker. SDR synthesized voice frequency marker generator for MW band

ugly-smd-adapters. Eagle PCB designs for adapting SMD parts to ugly (or Manhattan) style breadboarding

led-matrix-generator. Eagle scripts for LED matrix display generation

arbitrary-waveform-generator. Define and generate waveforms to output with your favorite DAC

noise-generator. Flat-spectrum noise generation for use with osmo-fl2k and FL2k USB-to-VGA dongles

loopfield. Python module for calculating magnetic fields induced by filamentary current loops

tiny-tdr. Time-domain reflectometery add-on for your oscilloscope

a111-radar. Sensor module using A111 60 GHz radar

osmo-fl2k. C

MLX90393. Driver(s) for MLX90393 magnetometer

supercapacitor-balancer. Charge balance PCB for 12V nominal (16.2V max) supercapacitor bank

ten-year-flashlight. OpenSCAD

arduino-VEML7700. Arduino driver for VEML7700 ambient light sensor

spread-spectrum-ir. Shell

led-modeling. Automated LED analysis and SPICE model generation

quadrature-generator. Adapter for using spectrum analyzer with tracking generator as simple VNA

pic-ir-rx. IR receiver for NEC-formatted IR remote control codes

ff555. Fast 555-like timer circuit

led-oscilloscope. Simple (toy-like) LED oscilloscope

TinyFPGA-game-console. VGA game console for use with TinyFPGA A-series modules

pushbroom-panoramic-camera. Experimental lowres landscape camera

sna-leakage-compensation. Code and data associated with "External Correction for Scalar Network Analyzer Leakage"

1-cell-mcu. Experimental design for efficient single-cell (Alkaline/NiMH/LiFeS2) MCU power supply using MCP1624

esp8266-3cell. Carrier board for ESP-12x modules with 3 AA(A) cell low-quiescent current switching power supply

eagle-library. Collection of Eagle CAD parts

ultrasonic-detector. Digital down-converting ultrasonic detector

work-in-progress. Multi-channel short-range SDR AM broadcast band transmitter

eagle-projects. private eagle projects -- view/use at your own risk!!!

bats-n-gons. Nocturnal flying mammals, geometric shapes, and emergent behavior

mplab-projects. SWIG

ugly_fpgas. Breakout PCBs for ugly-style prototyping with small FPGAs

8020-optical-rail. 3D printed components for using 8020 1" aluminum extrusions as an optical rail

serial-dmm-adapter. Arduino based protocol-translating adapter for serial DMMs using the "14-byte" protocol

progduino. Arduino compatible PCB with programmable supply voltage and current metering

diode-bolometer-array. Experimental bolometer sensor from an array of diodes or transistors