A fast, touchscreen-friendly ESP32 dashboard for Speeduino-style data, built on LVGL + TFT_eSPI for a 480×320 3.5" display.
Includes RPM meter + tiles, SD CSV logging, a WiFi AP configuration portal, warning alarms, and a shift-light overlay.

• Two dashboard layouts

  • Meter view: analog-style RPM meter with color zones + big RPM readout
  • Bar view: horizontal RPM bar with tick labels + tiles grid

• SD logging (CSV)

  • One-press REC start/stop
  • Auto-increment log index (/log_00001.csv, etc.)
  • Download logs via the WiFi portal (including “latest log” shortcut)

• WiFi configuration portal (AP mode)

  • Connect to ESP_DASH and configure warnings / logging / view mode
  • When a device connects, the dashboard switches to a static portal screen for maximum stability

• Warnings + shift light

  • Per-sensor min/max thresholds with enable toggles
  • Full-screen flashing shift overlay at configurable RPM

Check the files section for demo videos and actual screenshots

-web portal is a bit flakey and requires more development

###HARDWARE Freenove FNK103, ESP32 CYD 3.5 Inch Touch Display WiFi BT Dual-core 32-bit 240 MHz Microcontroller

Arduino IDE 2.3.7

files from from GitHub

• esp_dash_v1.ino
• lv_conf.h
• esp_dash_v1.cpp
• TFT_eSPI_Setups
• User_Setup.h
• User_Setup_Select.h

install the following Libraries

• TFT_eSPI by Bodmer v2.5.43

• copy User_Setup.h and User_Setup_Select.h into the TFT_eSPI library folder overwriting the existing

• copy TFT_eSPI_Setups folder into the Arduino Libraries space

• 

• lvgl by Kisvegabor v8.4.0

install the following board type

• esp32 by Espressif Systems v3.3.5
• set board to ESP32 Dev Module
• PSRAM = Enabled
• Partition Scheme = Huge APP (3MB No OTA/1MB SPIFFS)

run esp_dash_v1.ino and allow it to create a folder then move lv_conf.h and esp_dash_v1.cpp into the same folder.

you should now be able to flash your display

I have only tested this with the Freenove FNK103 and a Speeduino 4.3

• I couldnt get this to work with a logic level shifter or using a divider, so went direct and it seems to work reliably so far.
• My board was damaged and 1 of the resistor was missing on the serial line just behind the port. i ended up removing both and bridging them

FNK103
Serial Port_____________Speeduino
5v---------------------------------5v
Gnd--------------------------------Gnd
Tx---------------------------------Pin 15 RX (Arduino Mega 2560)
RX---------------------------------Pin 14 TX (Arduino Mega 2560)