ESP32-2432S028R Quick Reference Card

🎯 Quick Start

Connect USB-C cable
Display shows touchscreen UI
Tap [POWER] to turn ON (green)
Use slider to control speed
Tap [DIR] to change direction

📱 UI Button Guide

┌──────────────────────────────────────┐
│ [POWER] [MODE] [RAILS] [DIR]        │
└──────────────────────────────────────┘

[POWER] Button

Green = Power ON → Motor/DCC active
Red = Power OFF → No output
Tap to toggle

[MODE] Button

Cyan = DCC Digital mode
Yellow = DC Analog mode
⚠️ Auto powers OFF when switching!

[RAILS] Button

2-Rail = Standard configuration (relay OFF)
3-Rail = Center rail mode (relay ON)
Relay clicks when toggling

[DIR] Button

FWD = Forward direction
REV = Reverse direction
Changes immediately if powered

Speed Slider

Drag white knob OR tap anywhere on slider
Range: 0-100%
Real-time updates

⚡ Pin Quick Reference

Function	GPIO	External Connection
PWM/DCC_A	18	LM18200 PWM (dual purpose)
DIR/DCC_B	19	LM18200 DIR (dual purpose)
Motor BRAKE	23	LM18200 BRAKE
Relay	4	Relay Module IN
Ground	GND	All GNDs

🔒 Safety Features

✅ Auto Power-Off: Switching DCC↔Analog automatically turns power OFF
✅ Emergency Stop: Tap [POWER] button for immediate stop
✅ Settings Saved: All configurations persist after reboot

🚨 Important Notes

Always power OFF before switching modes (automatic)
DCC requires booster circuit (ESP32 outputs logic-level only)
Motor controller handles high current (not ESP32 directly)
Common ground required for all external circuits

🛠️ Default Settings

DCC Address: 3 (change in code)
Power: OFF on startup
Mode: DC Analog
Rails: 2-Rail
Speed: 0%
Direction: Forward

📊 Serial Monitor Commands

Baud rate: 115200

Watch for:

Configuration loaded
Relay Controller initialized
Touchscreen UI initialized
Mode changes
Power state changes

🔄 Factory Reset

To reset all settings:

Flash firmware with PlatformIO
Settings will revert to defaults
Or call config.reset() in code

📞 Troubleshooting Quick Fixes

Problem	Quick Fix
Touch not working	Adjust calibration in code
Display blank	Check USB power
Motor not running	Check power is ON + correct mode
Relay not clicking	Verify 5V power to relay
Settings not saving	Check NVS partition

Tip: Keep this card handy near your test bench!

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