You need:

• Arduino Nano ESP32
• ADS1115 analog to digital converter for accurate readings
• GC9A01 Display
• a 10k NTC Thermistor (i used a Koso Oil Temperature Sensor)
• a 10k Resistor
• some Cables

Arduino Libraries used:

• TFT_eSPI

• GC9A01_DRIVER

• RREFont

• ArduinoBLE

• Adafruit_ADS1X15

  Make sure to select "Tool > Pin Numbering -> GPIO" in Arduino IDE

The Oiltemp App is a .NET MAUI Universal application and should run under Windows/Android/iOS