RC LARGECARS

RCLC D15 ENGINE SIMULATOR

A real-time diesel truck simulator for RC semis: recorded Cat C15 sound, a physics drivetrain, turbo, jake brake, air brakes, lights, gyro hills and active suspension - on one small ESP32-S3 board.

🤖 vibe coded · built with AI, tuned by ear

Flash your board

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Chrome or Edge on Windows, Mac, Linux or ChromeOS. Phones and Firefox/Safari can't flash.

How to flash

  1. Unplug the battery from the board. The USB cable powers it for flashing.
  2. Plug the Freenove ESP32-S3 module into your computer with a USB-C data cable (some charge-only cables have no data wires). The module has two USB-C sockets: use the one that shows up as a CH343 serial port. If nothing appears in the next step, try the other socket.
  3. Press Install firmware above and pick the port called USB-Enhanced-SERIAL CH343 (Windows) or /dev/cu.wchusbserial… (Mac).
  4. First install: say yes to erasing the device so it starts clean. Updating later: say no to keep your settings, tune and gyro calibration.
  5. Wait for "Installation complete" (about a minute), then unplug USB.

Windows can't see the port? Install the WCH CH343 driver from wch-ic.com, then try again.

After flashing

  1. Sound pack: download RCLC_D15_SD_card.zip, unzip it onto a FAT32 microSD card (4–32 GB) so the card has a packs/rclc folder, and put the card in the board.
  2. Power up from your ESC's BEC and battery. The truck boots in about 5 seconds.
  3. Connect your phone to the Wi-Fi RCLC-D15, password truckin123, and open http://192.168.4.1. That's the whole control panel: tune, sound, lights, gyro, suspension, race mode.
  4. Pick your receiver under SETUP → RC CHANNEL MAP (iBUS, SBUS or PWM is detected automatically).

More

📖 The manualEverything: wiring, features, the web UI, tuning, the gyro, troubleshooting. 🎧 Sound StudioBuild your own engine pack from 5 engine + 5 exhaust recordings and save it straight to the SD card. 🛠 Get a boardOrder the RCLC D15 from PCBWay, assembled, then solder 8 headers. 🧭 Add the gyroA $3 GY-521 gives you real hills, smart shifting and rollover cut-off.

This build

Board
RCLC D15 (ESP32-S3, Freenove Lite MCN16R8: 16 MB flash, 8 MB PSRAM)
Firmware
1.0.0
Source
github.com/turbotike/d15-engine-simulator-