01
Gerber Viewer for GitHub
A Chrome extension that renders Gerber PCB fabrication files right inside GitHub, pull-request diffs included, so you can review board changes without leaving the repo.
FI Field Instruments · Electronics Toolkit
Electronics Toolkit
Single-file electronics tools for the bench: board review, pin diagnostics, schematic capture, FPGA logic, touch-UI design, and signal recording. Each runs offline in any modern browser. Source on GitHub under GPL-3.0.
- Instruments
- 19
- Runs
- Offline, in the browser
- Licence
- GPL-3.0
- Accounts
- None, ever
02
PinScope
An Arduino diagnostic tool for probing and visualizing pin activity at the bench, with documentation on GitHub Pages.
03
Paperwork
Turns a hand-drawn schematic into a runnable SPICE simulation through a computer-vision pipeline, no redrawing required.
04
Gatewright
A drag-and-wire logic gate editor for the Arduino MKR Vidor 4000 FPGA: build circuits visually and export Verilog, an Arduino sketch, a pin map, and a Quartus flow.
05
Panelwright
A single-file, browser-based UI designer for the Arduino Giga Display Shield. Drag LVGL widgets onto a true 1:1 canvas (800 x 480 or 480 x 800), edit their properties, and export a complete Arduino sketch ready to flash, no LVGL boilerplate by hand.
06
Oscillograph
A single-file, browser-based workbench for reading, visualizing, and analyzing sensor streams from Arduino-class devices. Drag charts onto a canvas, bind them to channels, layer analysis transforms, and export the whole thing as a hosted dashboard or a JSON project you can keep editing later.
07
PLC Python Toolkit
Real-time data acquisition, logging, and visualization for the Schneider Electric Modicon TM221 PLC over Modbus TCP. Three Python tools: a process monitor with CSV logging and a live trend dashboard, an interactive register read and write terminal, and a network scanner that finds M221 controllers. Built on pymodbus, no proprietary drivers.
08
Spectrum
A WebSDR studio that turns a Chrome or Edge browser into a standalone software-defined radio console for the RTL-SDR. No server, no install: the browser drives the dongle directly over WebUSB, demodulates in JavaScript, and paints the spectrum and waterfall on canvas. A built-in simulator provides a believable stretch of HF, so every page works with no hardware attached.
09
Binnacle
A browser-based console for the Bus Pirate 5. It wraps the plain serial terminal in something that feels like a piece of bench equipment rather than a shell prompt, a proper instrument front-end for the tool.
10
Telltale
Reads consumer infrared remote signals with a device camera. A telltale is the ribbon on a shroud that makes an invisible wind legible, and this one does it for 940 nanometre light. Single file, no build step, no network, no libraries: open it from a file:// URL and it works.
11
Firmament
An embedded development bench that runs in a browser, from disk, with no server. Six modules covering the loop an embedded developer actually walks: put firmware on the part, find out what is in it, find out what it is doing, and find out what it costs.
12
Tether
A self-contained Web Serial monitor for Arduino boards and other serial devices. Connect to a supported USB serial device, read its output, and send text commands back, no desktop serial terminal to install.
13
Nibble
A bit-twiddling and protocol bench: convert between hex, binary, decimal, and ASCII, swap endianness, visualize bitfields, and compute configurable CRC-8/16/32 and checksums. An interactive scratchpad for decoding a protocol byte by hand.
14
Scabbard
A board-fitted enclosure generator, a sheath fitted to a blade. Point it at a board and it generates a printable 3D enclosure sized to that board, with mounting bosses, auto-placed connector cutouts, a choice of lid, cooling, and text. One HTML file, runs from disk, no server.
15
Adapter
A local-first interface engineering workbench for cable adapters and small interface boards. It turns two connector or device pinouts into a documented engineering record: connector definitions, pin mappings, electrical decisions, protection and power reviews, physical realization, verification evidence, release controls, build travelers, serialized units, and service history. It exposes assumptions and produces a useful handoff package, it does not certify a design or replace manufacturer documentation.
16
Startup
A local-first first-power-on, board-bring-up, repair, and qualification conductor. It organizes controlled preparation, energization, verification, firmware loading, peripheral testing, findings, evidence, readiness decisions, and engineering records, without claiming to certify safety.
17
SignalPath
A signal-chain architecture bench. Lay out a complete chain, from a sensor or source through conditioning, conversion, transport, and processing, and answer one question at every stage: what did we lose, and where. It reasons about the chain as a budget spent down its length, deliberately broader and less component-level than a parts tool. It will not size a resistor, but it will tell you the front end costs a few dB of SNR, that the anti-alias filter and the sample rate are fighting, and that the transport link, not the ADC, caps your end-to-end latency. It is the map, not the street.
18
Sensorium
A local-first instrument for designing defensible sensing systems. It treats the sensor, its placement, the interface, calibration, uncertainty, sampling strategy, and installed validation as one measurement chain rather than a pile of separate choices.
19
Burnin
A local-first reliability and endurance-test planning instrument for makers, engineers, repair technicians, small manufacturers, and hardware developers.
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