electrical engineering
pcb-design rf high-voltage solar meshtastic supercaps samd21 attiny nfc
An Introduction to Gamma Spectroscopy
Gamma Spec Theory, Modeling, and PCB Design. Article for Hardware Thrashers of X
OpenFlashlight
Open source flashlight/handheld laser kit with ATTiny816 CC driver + battery charger PCB
Femtofox Pro TX Power + Power Consumption Testing
E22-900M-30S boosted LoRa gateway TX power testing + Femtofox Pro Linux Meshtastic Node power usage testing
WASP, Wearable AI Synthesis Platform
An open source AI weable project
Spacebridge HAB PCB Development
Meshtastic DIY High Altitude Ballooning at Noisebridge Hackerspace
Hello, San Francisco
A Variety of Fun Updates and Adventures
OpenSauce 2024
Exhibiting at OpenSauce 2023 and Related SF Adventures
Microwave Furnace
10kW of 2.4GHz RF :3
ESP32S2 MicroMPPT
BQ2425X Dynamic Power Management as Low cost Solar MPPT/BMS
Bluetooth/FM Transmitter
DIY SI4712/ESP32 Base Bluetooth->FM Transmitter
NFC/LED Chip Implant
Notes on-Implanting an xSiiD NFC/LED Chip
Solar Powered NFC Transponder
Solar powered NFC transponer for PSK car access/ignition via xSIID NFC implant.
Intro to Atopile
Installation, usage, and best-practices
DIY Airtag
Low cost open-source Find My Network geolocator
DRSSTC1
Tiny Dual Resonant Solid State Telsa Coil
Copper electroplating printed parts
CuSO4 electroplating on mSLA/FDM 3D printed parts
Femtofox MPPT
MPPT for the Femtofox Linux Meshtastic Client
Femtofox Project
Configuration guidelines, power usage testing, RF transmit power testing
Gamma Spectroscopy
Modeling and buidling scintillator + SiPM gamma spectroscopes for radioisotope identification
Izzymonitor HAOS Control Panel
ESP32-S3 based ESPHome HAOS Panel
Microelectrode Arrays
Constructing microelectrode arrays for cultured neurons for Frontier Tower's Neurotech floor
Micromppt
800mV-5.5Vin MPPT Boost Charger with Autonomous Perturb-and-Observe Setpoint Adjustment
Head In A Jar (Opensauce 2025)
Nixon Tulpa, Robot Head with Silicone Skin, Interactive LLM with Knowledge Graph Integration
Non Human Scent
Edge ML gas composition sensing with MOX arrays and ESP32-S3
Open Flashlight
Open Source Flashlight with Atopile
3D Printed Neopixel LED Pumpkin
3D Printed Neopixel Halloween Pumpkin with ATTiny85
Spacebridge HAB PCB
High altitude balloon payload PCB with LoRa, GPS, heating, enviromental sensing, and a cutoff mechanism
Veramonitor HAOS Control Panel
ESP32-S3 based ESPHome HAOS Panel
Voron 2.4 Build
350mm Self Sourced Voron V2.4r2
WASP, Wearable AI Synthesis Platform
BLE 5.2 module for wearable conversation transcription and analysis
MASSIVE spark gap tesla coil at LOD labs
Wirelessly powered capacitively coupled wireless bike at LOD labs
nonhumanscent, ML-assisted gas composition sensing with BME688 and ESP32S3
Marin County Gamma/EM survey
pcb-design
Spacebridge HAB PCB Development
Meshtastic DIY High Altitude Ballooning at Noisebridge Hackerspace
Intro to Atopile
Installation, usage, and best-practices
Spacebridge HAB PCB
High altitude balloon payload PCB with LoRa, GPS, heating, enviromental sensing, and a cutoff mechanism
rf
Femtofox Pro TX Power + Power Consumption Testing
E22-900M-30S boosted LoRa gateway TX power testing + Femtofox Pro Linux Meshtastic Node power usage testing
Microwave Furnace
10kW of 2.4GHz RF :3
Bluetooth/FM Transmitter
DIY SI4712/ESP32 Base Bluetooth->FM Transmitter
DIY Airtag
Low cost open-source Find My Network geolocator
Femtofox Project
Configuration guidelines, power usage testing, RF transmit power testing
high-voltage
Microwave Furnace
10kW of 2.4GHz RF :3
DRSSTC1
Tiny Dual Resonant Solid State Telsa Coil
solar
ESP32S2 MicroMPPT
BQ2425X Dynamic Power Management as Low cost Solar MPPT/BMS
Solar Powered NFC Transponder
Solar powered NFC transponer for PSK car access/ignition via xSIID NFC implant.
Femtofox MPPT
MPPT for the Femtofox Linux Meshtastic Client
Micromppt
800mV-5.5Vin MPPT Boost Charger with Autonomous Perturb-and-Observe Setpoint Adjustment
meshtastic
Femtofox Pro TX Power + Power Consumption Testing
E22-900M-30S boosted LoRa gateway TX power testing + Femtofox Pro Linux Meshtastic Node power usage testing
Spacebridge HAB PCB Development
Meshtastic DIY High Altitude Ballooning at Noisebridge Hackerspace
Femtofox MPPT
MPPT for the Femtofox Linux Meshtastic Client
Femtofox Project
Configuration guidelines, power usage testing, RF transmit power testing
Spacebridge HAB PCB
High altitude balloon payload PCB with LoRa, GPS, heating, enviromental sensing, and a cutoff mechanism
supercaps
rendering of the LTC3350 supercap bidirectional converter PCB
holding the first bidirectional converter prototype I assembled :)
LTC3110 based bidirectional converter with attiny1627 uC. produced in the process of testing kyocera-AVX prismatic caps for a variety of applications
underside of the LTC3110 PCB. off-the-shelf RF cans secure two prismatic caps securing and provide some protection. produced a version with a lower profile solid aluminum can in the same style
samd21
IGBT singing ignition coil playing a nokia ring tone
this is an ignition coil driven by an IGBT half bridge by an arduino designed to play music on a jacob's ladder. here it is producing a heart around 20khz
attiny
Open Flashlight PCB Rendering
Izzymonitor HAOS panel
rendering of the LTC3350 supercap bidirectional converter PCB
holding the first bidirectional converter prototype I assembled :)
nfc
xSIID self implant procedure
LED visible in daylight after some healing