This shield, which can be coupled with Arduino UnoR4 and Arduino Mega has been designed to connect between 1 to 4 lambda modules and make data collection on an SD card, having a real time clock to know the time in which each measurement was made. It has been upgraded with a bluetooth moduln 2 protected analog inputs.and two inputs for two thermocouples (cooling water and oil tank temperature).

This Shield includes:

• SD card reader writer.
• 2 protected analog inputs.
• 2 inputs for two thermocouples (cooling water and oil tank temperature).
• 1 bluetooth module.

• 1x4 connector for a LCD display with I2C communication.

• RTC DS3231, Real time clock.

• 4 Connections 2x6, for lambda modules 01M11V00 and 01M21V00.

• 4 pushbottons, can be used for calibration, and to control the recording on the SD card.

Note: If you use all the features of this board you must use an Arduino Mega (With small USB input, because a large one collides with the analog inputs), or Arduino UNO R4 (In testing phase) because Arduino Uno R3 is left with insufficient memory.