OhmQuill: Electrical Toolkit

Electrical and workshop calculators for wire size, ampacity, voltage drop, Ohm's law, resistor codes, thread and tap drill sizes, and solar sizing. OhmQuill is a pocket workbench for electricians, makers and learners. Run the numbers, then keep them: parts, projects, circuit runs, fasteners and solar systems are saved on your device and work offline. WHAT'S INSIDE - Electronics bench: resistor color and SMD code decoder, standard circuit calculators and reference charts, a parts bin, and projects with a bill of materials and a have or short check - Wire and circuits: gauge lookup across AWG, mm2 and kcmil, ampacity with temperature and conductor-grouping derates, live voltage drop and a panel schedule over every run. Each run is checked three ways (ampacity, the breaker limit for small wire, and voltage drop) and the suggested gauge passes all three. Replace any default ampacity value with your own - Trade units: conversions across every standard category, your own trade units, mixed-unit job take-offs with waste and cost, and a unit cost tab that compares cost per unit across sizes and suppliers, now by length and area too, with saved carts and lists - Threads and fasteners: thread pitch, tap drill and clearance for metric and UTS threads, a fastener library, job hardware lists, and torque and thread engagement - Solar: array size, panel count, inverter and battery sizing from your daily loads, a string voltage check from your panel's datasheet and your inverter's MPPT range with a string window chart, and a year-one production and payback estimate FREE TO TRY Free to try: every decoder, calculator and reference chart is free and unlimited, including live voltage drop, the three-way wire checks, derated ampacity, your own ampacity values, the solar datasheet checks and the torque workspace. Free use includes about 3 saved projects, systems or lists per tool (8 circuit runs, a 10-part bin), the newest 7 history entries (older ones stay on your device), and one sample export per tool. UNLOCK EVERYTHING One purchase unlocks every tool: unlimited parts, projects, runs, fasteners, take-offs and solar systems, side-by-side run comparison, the 25-year solar payback view, full history, and every CSV, PDF and text export. One-time purchase, no subscription. Bought anything in OhmQuill before? It still unlocks everything. Tap Restore purchases in Settings or on the unlock screen. PRIVACY No account. Your projects and defaults stay on your device. Export my data gives you your own data as plain JSON. Estimates and reference only. OhmQuill is not a code-compliance tool. Follow your local electrical code, check the manufacturer's data, and use a licensed electrician where the law requires one. Made by bee2.io LLC. More apps: https://bee2.io