CIRCUIT SKETCHES, MADE INTERACTIVE

Draw it.
Capture it.
Bring it to life.

Turn a hand-drawn circuit into an interactive model you can inspect, edit, and understand on desktop or Android.

Choose your version View the source
LOCAL PASS 01
EDITABLE MODEL 03
HOLOTRACE
ANALYSIS READY
Recognized circuit with resistor, LED, battery, and connecting wires
R1 resistor 96%
D1 led 93%
V1 source 98%
CANVAS / CIRCUIT_01
DETECTION REVIEW

3 parts found

Confirm the read before continuing.

Resistor · R1
LED · D1
DC source · V1
THE PROCESS

From notebook linework to a circuit you can use.

Keep the speed of sketching. Add the structure of a digital workspace.

01
CAPTURE

Start with the sketch

Take a photo on Android or bring in an existing image from your desktop.

02
REVIEW

Check the read

A local vision pass finds likely parts. Review those regions before deeper recognition.

03
EXPLORE

Work with the circuit

Move components, draw connections, and switch between canvas, schematic, and parts views.

Review comes first. See what Holotrace found before the image continues to deeper recognition.

ON-DEVICE FIRST PASS
MODEL ARCHITECTURE

Two views of the page.
One accountable result.

A fast classifier examines the regions found on your device while a second model scans the full page. Keeping both paths preserves speed without depending on perfect first-pass detection.

CURRENT RECOGNITION STACK
01
ON DEVICE

OpenCV prepares the page

Crop, perspective, contrast, and denoising run locally. The same pass proposes likely symbol regions.

IMAGE + REGION PROPOSALS
02
FAST PATH

A compact classifier reads each crop

ResNet Tiny labels proposed regions and rejects false proposals with a dedicated background class.

2.8M PARAMETERS · ~11 MB
03
RECOVERY PATH

A full-page detector catches misses

Faster R-CNN with a MobileNetV3 FPN backbone searches the complete page for symbols the local pass overlooked.

19.2M PARAMETERS · ~77 MB
04
IN INTEGRATION

Evidence becomes a circuit model

The normalizer combines boxes, confidence, and model versions with wire geometry to build editable Circuit IR.

REVIEWABLE · VERSIONED · RENDERER-INDEPENDENT

Why keep the raw result? Each prediction retains its source location, confidence, alternatives, and model version so uncertain reads can be explained and corrected before simulation.

BUILT FOR THE WORKBENCH

A circuit workspace that gets out of your way.

Capture at the bench. Refine on a larger screen. The same circuit stays readable across touch and desktop layouts.

Edit naturally

Pan, zoom, select, place, and wire on a workspace designed for mouse and touch.

Review before upload

See the regions Holotrace found and decide what continues to the recognition service.

See the circuit respond

Inspect connections and simple circuit behavior without redrawing the whole diagram.

DOWNLOAD HOLOTRACE

One workspace.
Two ways in.

Try the latest development build for Windows or Android. New packages are published after app changes land on main.

DESKTOP

Holotrace for Windows

A focused editor for reviewing captures, arranging components, and working across the full circuit canvas.

  • Mouse and touch input
  • Full circuit workspace
  • Windows installer
Download for Windows
MOBILE

Holotrace for Android

Camera-first capture and a touch-ready circuit workspace built for the device already in your pocket.

  • Direct camera capture
  • Touch-first controls
  • Android package
Download Android APK
View build history on GitHub