The Accurc 3.0 community is active on the (under "Metrology" section) and Reddit’s r/electronics . The original designer (often credited under the pseudonym "AccurcDesign") maintains a detailed 80-page user manual covering:
Note: As Accurc is an open hardware project, specifications may vary by assembler, but a "full-spec" Accurc 3.0 typically meets the following: accurc 3.0
The jump to the 3.0 architecture focuses on refining the "physics-first" approach that defined AccuRC. Unlike simulators that use pre-baked flight profiles, AccuRC simulates every mechanical component, from the servo speed to the blade airfoil. Key Features and Improvements The Accurc 3
Metrology hobbyists often build "voltage archives"—multiple references monitored against each other over years. Accurc 3.0’s digital logging port allows you to automate this process, recording daily readings from an 8.5-digit DMM like the Keysight 3458A. In many sims, a taildragger sits on the
| Feature | Accurc 3.0 (~$400-800 DIY) | Fluke 5720A (~$30,000 used) | | :--- | :--- | :--- | | Voltage Ranges | Fixed points (10V, 5V, 2.5V) | Continuously variable from 0 to 1100V | | AC Capability | No | Yes (to 100 kHz) | | Current Output | No | Yes (to 11A) | | Resistance Simulation | No | Yes | | Absolute Uncertainty | ~1 ppm/year | ~2-3 ppm/year (but over all ranges) | | Portability | Excellent (battery option) | Poor (80 lbs, rack-mount) | | Best For | Checking 6.5-digit DMMs | Full metrology lab workload |
One of the most requested features in RC simulation history has been realistic ground handling. In many sims, a taildragger sits on the runway waiting to take off, pivoting on a perfect point. AccuRC 3.0 changes this dynamic entirely.