ESP Hub
A desk hub on an ESP32-S2: nine apps behind a wheel menu, driven by one rotary encoder and two buttons, drawn to a 128x64 OLED at a 60 fps frame budget.
ESP32-S2 Mini · C++ · U8g2 · SH1106 +3
vivaanshah.tech engineering archive
Vivaan Shah
I am a Builder, Developer, Hardware Engineer, Student, Creator.
High-school student, and I build things at the point where software meets silicon — firmware, circuits, and the interfaces that make them usable.
Featured work
Built, not bought.
Hardware you can hold, firmware that ships, and the interfaces that drive them.
FanCam
An ESP32-CAM that streams MJPEG to a browser while driving a 4-wire fan at the 25 kHz PWM spec, reading its tachometer on an interrupt, and catching a stalled rotor before it cooks.
AI-Thinker ESP32-CAM · OV2640 · C++ · FreeRTOS +3
Matrix FIDO
A board port: driving a 64-pixel panel from pico-fido without ever blocking the CTAP path. The authenticator latches intent on core 0; a 60 Hz task on core 1 does the pushing.
ESP32-S3 · C · ESP-IDF · WS2812B +3
Capabilities
Full stack — down to the copper.
Embedded firmware
ESP32-S2, ESP32 and ESP32-S3, in C and C++ against the datasheet. Interrupt timing, PWM carriers, I²C, and FreeRTOS priorities chosen so the loop that matters never waits on the one that doesn't.
Interfaces on tiny screens
Nine apps behind one wheel menu, on 8,192 monochrome pixels, at a 16 ms frame budget.
Realtime web UI
MJPEG video and a live control dashboard served straight off the microcontroller.
Working inside other people's code
Porting firmware to new hardware without forking it — a link-time wrap beats a patch you have to rebase forever.
This site
Astro, hand-written motion, no UI framework, no analytics cookies, strict CSP.
- Firmware projects
- 26
- Lines of C and C++
- 16,959
- Microcontrollers targeted
- 6
Open source
Shipped in public.
Live from the GitHub API — repositories, stars and the languages behind them.
— Public repos
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Engineering log