Reference

Changelog

What's new. Tools land here automatically — each tool's `added` date is its release stamp.

2026-05-19
  • BIN ↔ Intel HEX / SREC Converter — v1.0.0 · Convert firmware images between raw binary, Intel HEX, and Motorola S-record. Validates checksums, preserves sparse address maps, handles linear and segmented Intel HEX addressing, and emits a raw hex preview for inspection.
  • Resin Exposure Time Calculator — Jacobs working-curve · v1.0.0 · Layer and bottom exposure plus Jacob's-curve cure depth from resin critical energy, penetration depth, printer LED power and layer height. Flags under-cure (delamination) and over-cure (brittle, blooming).
  • FEP / Vat Life Tracker — v1.0.0 · Estimate remaining FEP film life from accumulated print hours, average layer exposure, bottom-layer abuse and vat film type. Bottom exposures and high LED power age the film faster — both are factored in.
  • Resin Cost Calculator — v1.0.0 · Per-print cost from resin used, bottle price, electricity and consumables — with a wastage uplift so failed prints don't surprise you. Returns total cost plus effective ₹ per ml and ₹ per gram.
  • Resin Volume Calculator — v1.0.0 · Estimate how much resin a print will consume from the model volume, support overhead, raft and failure-buffer percentages — plus how much to pour into the vat including the FEP coverage minimum.
  • UV Post-Cure Calculator — v1.0.0 · Estimate post-cure time in a wash-and-cure station from part thickness, resin type, UV intensity, wavelength match and rotation. Flags under-powered stations and over-cure brittleness.
2026-05-17
  • API Testing Sandbox — v1.0.0 · Postman in a tab. Fire HTTP requests against any URL straight from your browser — no install, no account, no workspace. The API endpoint validates your request and generates the equivalent cURL command, useful for codegen and CI scripts.
  • Cron Expression Builder — v1.0.0 · Build a cron expression part-by-part, get a plain-English description, and preview the next five scheduled runs in your timezone. Handles ranges, lists, step values, and named days.
  • Flexi Pay Tax Simulator — Finance Act 2025 · IT Act 1961 · v1.0.0 · Compare Old vs New tax regime for FY 2025-26 (Finance Act 2025). Handles HRA, flexi bucket (food, NPS, LTA, mobile, uniform, prof-dev), 80C/80D/80CCD1B/24B, 87A rebate and surcharge tiers. Returns total tax, monthly TDS, effective rate, and a regime pick.
  • LLM API Cost Calculator — v1.0.0 · Estimate monthly API cost for any LLM workload across Anthropic and OpenAI models. Includes prompt-cache and batch-API math so you see what you actually pay — not just the headline rate.
  • QR Code Generator — v1.0.0 · Generate a QR code from text, URL, or any payload. Pick foreground colour, background colour (or transparent), error correction level, margin and size. Returns SVG, base64 data URL, and ASCII preview.
2026-05-16
  • ESP32 Deep-Sleep Battery Life — v1.0.0 · Project lifetime for an ESP32 (or any duty-cycled MCU) running on battery. Computes average current and lifetime from sleep current, wake current, wake duration, cycle period, and battery derating.
  • GST Reverse Charge (RCM) Calculator — CGST Act §9(3) / IGST Act §5(3) · v1.0.0 · Compute the GST liability under the Reverse Charge Mechanism — the supplier doesn't collect tax, the recipient self-assesses it. Splits CGST/SGST or IGST, and flags Input Tax Credit eligibility.
  • MOSFET Junction Temperature — v1.0.0 · Compute MOSFET junction temperature from drain current, RDS(on), thermal resistance, ambient temperature and duty cycle. Flags marginal and danger conditions against the configured Tj-max.
  • PCB Trace Width Calculator — IPC-2221 · v1.0.0 · IPC-2221 compliant trace width for a given current, temperature rise, copper weight, and layer position. Returns width in millimetres and mils plus cross-sectional area.