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lap-model

Change how the simulated car and engine behave in speeduino-serial-sim — driver, gearbox, engine torque, manifold, thermal model, Speeduino fuel/ignition/idle…

Skill by askrejans

IndexedMIT★ 13
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/askrejans-lap-model

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Change how the simulated car and engine behave in speeduino-serial-sim — driver, gearbox, engine torque, manifold, thermal model, Speeduino fuel/ignition/idle logic, sessions — or regenerate the track.

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Oct 25, 2026.

Tools
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/lap-model

What's inside

Skill name
lap-model
Description
Change how the simulated car and engine behave in speeduino-serial-sim — driver, gearbox, engine torque, manifold, thermal model, Speeduino fuel/ignition/idle logic, sessions — or regenerate the track.
License
MIT
Instructions
38 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Lap model

Everything lives in `src/EngineSimulator.cpp`, constants in `include/Vehicle.h`.
`stepPhysics()` runs driver → engine/car → thermal → ECU every `SIM_STEP_MS`.
The ECU layer only sees sensed values and sets the packet; physics never
writes packet bytes.

## Calibration targets (keep them; tests check most)

| | |
|---|---|
| Hot lap at pace 1.0 | ~2:02 (110–134 s in tests) |
| Idle | 850 rpm hot, ~35 kPa, PW ~2.3 ms |
| WOT | 98–100 kPa, PW 6–7 ms, AFR ~12–13 |
| Overrun | ~15 kPa, DFCO after 0.3 s |
| Coolant | 85–98 °C on hot laps, fan cycles at idle after a run |
| Max rpm | < 7350 (limiters at 7000/7200) |

Tune with the desktop build: `pio run -e native && .pio/build/native/program
--speed 25` prints phase, lap, speed, gear, rpm, TPS, MAP, CLT, AFR and PW
every second. Then run `pio test -e native`.

## Rules

- Prefer a physical cause over a correction factor (the fuel film, not an
  AFR offset; the radiator, not a temperature clamp).
- Keep the compact path (`SIM_DETAILED == 0`) working: AVR uses the same
  driver and engine with fewer features. Build `uno` after changes.
- New settings: `SimSettings` default, `/api/settings` range check in
  `WebInterface.cpp`, the Control form, the native CLI, README.

## Track

`scripts/gen_track.py <outline.json> include/TrackData.h` from a closed
outline (`data/tracks/*.json`, with attribution and licence). The envelope
uses `LAT_G` and `BRAKE_G` in the script; the live driver scales it by pace.

From askrejans/speeduino-serial-sim, MIT.

More from askrejans/speeduino-serial-sim

Signals

Stars
13
Forks
6
Open issues
0
Last commit (this folder)
Oct 20, 2026 (9 days ago)
Last release
Oct 21, 2026 (7 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/askrejans/speeduino-serial-sim
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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Cite this page

lap-model skill. Agent Mart. https://agentmart.dev/skills/askrejans-lap-model (last updated 2026-10-24)