Own built MFA for VW Golf MK2 with tachometer.

Build with Arduino and 1.3" Oled Display. Integrated in Original Golf MK2 speedometer and Switched with MFA lever.

Upcoming functions:

• Display for battery level
• Display for time
• Display for oil temperature
• Display for oil pressure
• Display for cooler temperature
• Display for outside and inside temperature

Hardware:

• CPU: Arduino UNO
• Display: 1.3" SSH1106 Oled Display (I2C)
• Batterysensor: DC0-25V Voltage Sensor (I2C)

Pinout:

Voltage Sensor:

• : GND S : A0

Oled Display:

• : GND

• : 5V SCK : A5 SDA : A4

Button:

• : GND S : D4